678 results match your criteria BMC Medical Imaging[Journal]


Discriminative pattern of reduced cerebral blood flow in Parkinson's disease and Parkinsonism-Plus syndrome: an ASL-MRI study.

BMC Med Imaging 2020 Jul 13;20(1):78. Epub 2020 Jul 13.

Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.

Background: Accurate identification of Parkinson's disease (PD) and Parkinsonism-Plus syndrome (PPS), especially in the early stage of the disease, is very important. The purpose of this study was to investigate the discriminative spatial pattern of cerebral blood flow (CBF) between patients with PD and PPS.

Methods: Arterial spin labeling (ASL) perfusion-weighted imaging was performed in 20 patients with PD (mean age 56. Read More

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http://dx.doi.org/10.1186/s12880-020-00479-yDOI Listing

Noninvasive model for predicting future ischemic strokes in patients with silent lacunar infarction using radiomics.

BMC Med Imaging 2020 Jul 8;20(1):77. Epub 2020 Jul 8.

Department of Neurology, Zhuhai Hospital Affiliated with Jinan University, No. 79 Kangning Road, Zhuhai, 519000, Guangdong, China.

Background: This study aimed to investigate integrating radiomics with clinical factors in cranial computed tomography (CT) to predict ischemic strokes in patients with silent lacunar infarction (SLI).

Methods: Radiomic features were extracted from baseline cranial CT images of patients with SLI. A least absolute shrinkage and selection operator (LASSO)-Cox regression analysis was used to select significant prognostic factors based on Model with clinical factors, Model with radiomic features, and Model with both factors. Read More

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http://dx.doi.org/10.1186/s12880-020-00470-7DOI Listing

Using CT texture analysis to differentiate between peripheral lung cancer and pulmonary inflammatory pseudotumor.

BMC Med Imaging 2020 Jul 6;20(1):75. Epub 2020 Jul 6.

Department of Radiotherapy, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, 250117, Shandong Province, China.

Background: This study is to distinguish peripheral lung cancer and pulmonary inflammatory pseudotumor using CT-radiomics features extracted from PET/CT images.

Methods: In this study, the standard 18F-fluorodeoxyglucose positron emission tomography/ computed tomography (18 F-FDG PET/CT) images of 21 patients with pulmonary inflammatory pseudotumor (PIPT) and 21 patients with peripheral lung cancer were retrospectively collected. The dataset was used to extract CT-radiomics features from regions of interest (ROI), The intra-class correlation coefficient (ICC) was used to screen the robust feature from all the radiomic features. Read More

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http://dx.doi.org/10.1186/s12880-020-00475-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7339470PMC

Strategies for diagnosis of fetal right atrium dilation: based on fetal cardiac anatomy and hemodynamics.

BMC Med Imaging 2020 Jul 6;20(1):76. Epub 2020 Jul 6.

Department of Ultrasound, Shengjing Hospital of China Medical University, NO.36 Sanhao Street, Heping District, Shenyang, 110004, Liaoning Province, China.

Background: Fetal right atrium (RA) dilation is frequently detected in routine screenings while it remains a challenge to clarify the reasons. This study aimed to analyze the cardiac anatomy and hemodynamics of fetal RA dilation and the changes of hemodynamic indexes.

Methods: In the retrospective study, 420 fetuses with RA dilation were included, which were classified into the physiological group (n = 202), volume overload group (n = 142), and the pressure overload group (n = 76). Read More

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http://dx.doi.org/10.1186/s12880-020-00477-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7339432PMC

Diffusion tensor imaging quantifying the severity of chronic hepatitis in rats.

BMC Med Imaging 2020 Jul 2;20(1):74. Epub 2020 Jul 2.

Department of Radiology, The Affiliated Hospital of Southwest Medical University, 25 Taiping Street, Luzhou, Sichuan, 646000, People's Republic of China.

Background: Diffusion tensor imaging (DTI) is mainly used for detecting white matter fiber in the brain. DTI was applied to assess fiber in liver disorders in previous studies. However, the data obtained have been insufficient in determining if DTI can be used to exactly stage chronic hepatitis. Read More

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http://dx.doi.org/10.1186/s12880-020-00466-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7333377PMC

Rotation and torsion of the left ventricle with cardiovascular magnetic resonance tagging: comparison of two analysis methods.

BMC Med Imaging 2020 Jul 1;20(1):73. Epub 2020 Jul 1.

HUS Medical Imaging Center, Radiology, University of Helsinki and Helsinki University Hospital, PO Box 340, FI-00029, Helsinki, HUS, Finland.

Background: Left ventricle rotation and torsion are fundamental components of myocardial function, and several software packages have been developed for analysis of these components. The purpose of this study was to compare the suitability of two software packages with different technical principles for analysis of rotation and torsion of the left ventricle during systole.

Methods: A group of hypertrophic cardiomyopathy (HCM) patients (N = 14, age 43 ± 11 years), mutation carriers without hypertrophy (N = 10, age 34 ± 13 years), and healthy relatives (N = 12, age 43 ± 17 years) underwent a cardiovascular magnetic resonance examination, including spatial modulation of magnetization tagging sequences in basal and apical planes of the left ventricle. Read More

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http://dx.doi.org/10.1186/s12880-020-00473-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7329530PMC

Comparison of the clinical and MRI features of patients with hepatic hemangioma, epithelioid hemangioendothelioma, or angiosarcoma.

BMC Med Imaging 2020 Jun 29;20(1):71. Epub 2020 Jun 29.

Department of Radiology, Jiangmen Central Hospital, Affiliated Jiangmen Hospital of Sun Yat-Sen University, No. 23 Haibang Street, Jiangmen, 529000, Guangdong, China.

Background: Comparisons of hepatic epithelioid hemangioendothelioma (HEHE), hepatic hemangioma, and hepatic angiosarcoma (HAS) have rarely been reported. The purpose of our study was to analyze the clinical and magnetic resonance imaging (MRI) findings of these conditions.

Methods: A total of 57 patients (25 with hemangioma, 13 with HEHE, and 19 with HAS) provided hepatic vascular endothelial cell data between June 2006 and May 2017. Read More

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http://dx.doi.org/10.1186/s12880-020-00465-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7322860PMC

Adaptive-size dictionary learning using information theoretic criteria for image reconstruction from undersampled k-space data in low field magnetic resonance imaging.

BMC Med Imaging 2020 Jun 29;20(1):72. Epub 2020 Jun 29.

Department of Biomedical Sciences and Engineering, Mbarara University of Science and Technology, P.O.Box 1410, Mbarara, Uganda.

Background: Magnetic resonance imaging (MRI) is a safe non-invasive and nonionizing medical imaging modality that is used to visualize the structure of human anatomy. Conventional (high-field) MRI scanners are very expensive to purchase, operate and maintain, which limit their use in many developing countries. This study is part of a project that aims at addressing these challenges and is carried out by teams from Mbarara University of Science and Technology (MUST) in Uganda, Leiden University Medical Center (LUMC) in the Netherlands, Delft University of Technology (TU Delft) in the Netherlands and Pennsylvania State University (PSU) in the USA. Read More

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http://dx.doi.org/10.1186/s12880-020-00474-3DOI Listing

CT findings of patients infected with SARS-CoV-2.

BMC Med Imaging 2020 06 23;20(1):70. Epub 2020 Jun 23.

Department of Infectious Disease, Ruian People's Hospital, Wenzhou, 325200, China.

Background: We aimed to describe the chest CT findings in sixty-seven patients infected by Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

Methods: We retrospectively reviewed 67 patients hospitalized in Ruian People's Hospital. All the patients received the positive diagnosis of SARS-CoV-2 infection. Read More

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http://dx.doi.org/10.1186/s12880-020-00471-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7309204PMC

Utility of FDG PET/CT for assessment of lung nodules identified during low dose computed tomography screening.

BMC Med Imaging 2020 Jun 22;20(1):69. Epub 2020 Jun 22.

Section of Pulmonary, Critical Care & Sleep Medicine, West Virginia University, 1 medical center drive, HSC-N 9166, Morgantown, WV, 26506, USA.

Background: Many clinical guidelines recommend FDG PET/CT for the evaluation of pulmonary nodules ≥8 mm detected during low dose computed tomography (LDCT) lung cancer screening. However, its added value in this setting requires confirmation. We evaluated the clinical utility of FDG PET/CT, including incidental findings, during the evaluation of lung nodules detected on LDCT screening. Read More

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http://dx.doi.org/10.1186/s12880-020-00469-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7309986PMC

Correlation between spatial resolution and ball distortion rate of panoramic radiography.

BMC Med Imaging 2020 Jun 19;20(1):68. Epub 2020 Jun 19.

Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080, South Korea.

Background: The purpose of this study was to analyze the correlation between spatial resolution and ball distortion rate of panoramic radiography and to elucidate the minimum criterion for ball distortion rate, which is very relevant to clinical readability.

Methods: Horizontal and vertical spatial resolution and ball distortion rates were calculated in the same position, such as the incisor, premolar, molar, and temporomandibular joint area with various object depths corresponding to 48 mm. Three devices were evaluated. Read More

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http://dx.doi.org/10.1186/s12880-020-00472-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7304185PMC

Evaluation of superficial femoral artery-lesions after percutaneous transluminal angioplasty: color-coded summation images vs. monochromatic digital subtraction angiography.

BMC Med Imaging 2020 Jun 18;20(1):67. Epub 2020 Jun 18.

Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Würzburg, Germany.

Background: Percutaneous transluminal angioplasty (PTA) is increasingly requested in the therapy of peripheral arterial occlusive disease. The evaluation of the technical result after balloon angioplasty with regard to bailout stenting is highly dependent on the operators´ subjective assessment and mainly based on the monochromatic digital subtraction angiography (DSA) images. The aim of this study was to compare color-coded single image as a novel diagnostic tool with monochromatic DSA for the analysis of flow limitation and need for stent implantation after PTA of superficial femoral artery (SFA) stenoses. Read More

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http://dx.doi.org/10.1186/s12880-020-00468-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7302343PMC

Prospective evaluation of contrast-enhanced ultrasound of breast BI-RADS 3-5 lesions.

BMC Med Imaging 2020 Jun 17;20(1):66. Epub 2020 Jun 17.

The Clinic of Radiology and Nuclear Medicine, The University Hospital Brno, Brno, Czech Republic.

Background: To determine the benefit of contrast-enhanced ultrasound (CEUS) in the assessment of breast lesions.

Methods: A standardized contrast-enhanced ultrasound was performed in 230 breast lesions classified as BI-RADS category 3 to 5. All lesions were subjected to qualitative and quantitative analysis. Read More

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http://dx.doi.org/10.1186/s12880-020-00467-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7302394PMC

Coronary angiography video segmentation method for assisting cardiovascular disease interventional treatment.

BMC Med Imaging 2020 Jun 16;20(1):65. Epub 2020 Jun 16.

The Future Laboratory, Tsinghua University, Chengfu Road, Beijing, China.

Background: Coronary heart disease is one of the diseases with the highest mortality rate. Due to the important position of cardiovascular disease prevention and diagnosis in the medical field, the segmentation of cardiovascular images has gradually become a research hotspot. How to segment accurate blood vessels from coronary angiography videos to assist doctors in making accurate analysis has become the goal of our research. Read More

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http://dx.doi.org/10.1186/s12880-020-00460-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7298947PMC

Imaging features of the initial chest thin-section CT scans from 110 patients after admission with suspected or confirmed diagnosis of COVID-19.

BMC Med Imaging 2020 06 15;20(1):64. Epub 2020 Jun 15.

Department of Medical Imaging, Anqing Hospital Affiliated to Anhui Medical University, Renmin road, Anqing, 246000, Anhui, China.

Background: In December 2019, an outbreak of a novel coronavirus pneumonia, now called COVID-19, occurred in Wuhan, Hubei Province, China. COVID-19, which is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has spread quickly across China and the rest of the world. This study aims to evaluate initial chest thin-section CT findings of COVID-19 patients after their admission at our hospital. Read More

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http://dx.doi.org/10.1186/s12880-020-00464-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7294760PMC

Diagnosis of foetal vein of galen aneurysmal malformation by ultrasound combined with magnetic resonance imaging: a case series.

BMC Med Imaging 2020 Jun 12;20(1):63. Epub 2020 Jun 12.

Department of Ultrasound Diagnosis, Gansu Provincial Maternity and Child-care Hospital, Lanzhou, 730050, Gansu Province, P. R. China.

Background: Foetal vein of Galen aneurysmal malformation (VGAM) is a very rare congenital malformation of the cerebral blood vessels. We sought to evaluate the diagnostic value of ultrasound in combination with magnetic resonance imaging (MRI) in foetal VGAM.

Case Presentation: Prenatal ultrasound combined with MRI diagnosed five cases of VGAM. Read More

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http://dx.doi.org/10.1186/s12880-020-00463-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7291422PMC

Performance of diffusion and perfusion MRI in evaluating primary central nervous system lymphomas of different locations.

BMC Med Imaging 2020 Jun 9;20(1):62. Epub 2020 Jun 9.

Department of Radiology, First Affiliated Hospital of Fujian Medical University, 20 Cha-Zhong Road, Fuzhou, 350005, Fujian, China.

Background: Diffusion and perfusion MRI can invasively define physical properties and angiogenic features of tumors, and guide the individual treatment. The purpose of this study was to investigate whether the diffusion and perfusion MRI parameters of primary central nervous system lymphomas (PCNSLs) are related to the tumor locations.

Methods: We retrospectively reviewed the diffusion, perfusion, and conventional MRI of 68 patients with PCNSLs at different locations (group 1: cortical gray matter, group 2: white matter, group 3: deep gray matter). Read More

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http://dx.doi.org/10.1186/s12880-020-00462-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7285432PMC

Discrimination of benign from malignant breast lesions in dense breasts with model-based analysis of regions-of-interest using directional diffusion-weighted images.

BMC Med Imaging 2020 Jun 9;20(1):61. Epub 2020 Jun 9.

Department of Radiology, The University of Chicago, 5841 S. Maryland Ave. MC 2026, Chicago, IL, 60637, USA.

Background: There is an increasing interest in non-contrast-enhanced magnetic resonance imaging (MRI) for detecting and evaluating breast lesions. We present a methodology utilizing lesion core and periphery region of interest (ROI) features derived from directional diffusion-weighted imaging (DWI) data to evaluate performance in discriminating benign from malignant lesions in dense breasts.

Methods: We accrued 55 dense-breast cases with 69 lesions (31 benign; 38 cancer) at a single institution in a prospective study; cases with ROIs exceeding 7. Read More

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http://dx.doi.org/10.1186/s12880-020-00458-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7282088PMC
June 2020
0.983 Impact Factor

A case with Behçet's disease involving erosive Metacarpophalangeal joint arthritis: the value of ultrasonography in the diagnosis of an Erosion.

BMC Med Imaging 2020 Jun 3;20(1):60. Epub 2020 Jun 3.

Medicana International Hospital, Department of Physical Medicine and Rehabilitation, Ankara, Turkey.

Background: Behçet's disease (BD) is a chronic multisystemic vasculitis that may emerge with musculoskeletal system involvements, oral-genital recurrent aphthae, mucocutaneous lesions, and ocular symptoms. Arthritis in BD is usually non-erosive and not related to crippling disease. Erosive arthropathy is a very rare manifestation of BD. Read More

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http://dx.doi.org/10.1186/s12880-020-00461-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7268449PMC

Noninvasive KRAS mutation estimation in colorectal cancer using a deep learning method based on CT imaging.

BMC Med Imaging 2020 Jun 1;20(1):59. Epub 2020 Jun 1.

The First Hospital of Jilin University, Department of Radiology, Changchun, China.

Background: The detection of Kirsten rat sarcoma viral oncogene homolog (KRAS) gene mutations in colorectal cancer (CRC) is key to the optimal design of individualized therapeutic strategies. The noninvasive prediction of the KRAS status in CRC is challenging. Deep learning (DL) in medical imaging has shown its high performance in diagnosis, classification, and prediction in recent years. Read More

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http://dx.doi.org/10.1186/s12880-020-00457-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7268438PMC

Moving a neodymium magnet promotes the migration of a magnetic tracer and increases the monitoring counts on the skin surface of sentinel lymph nodes in breast cancer.

BMC Med Imaging 2020 May 27;20(1):58. Epub 2020 May 27.

Department of Integrated Science and Engineering for Sustainable Society, Chuo University, Tokyo, Japan.

Background: We suspected that moving a small neodymium magnet would promote migration of the magnetic tracer to the sentinel lymph node (SLN). Higher monitoring counts on the skin surface before making an incision help us detect SLNs easily and successfully. The present study evaluated the enhancement of the monitoring count on the skin surface in SLN detection based on the magnet movement in a sentinel lymph node biopsy (SNB) using superparamagnetic iron oxide (SPIO) nanoparticles. Read More

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http://dx.doi.org/10.1186/s12880-020-00459-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7254765PMC

Craniofacial morphology of wind and string instrument players: a cephalometric study.

BMC Med Imaging 2020 May 26;20(1):57. Epub 2020 May 26.

Department of Surgery, Faculty of Medicine, INEGI, Labiomep, University of Porto, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal.

Background: Playing an instrument may promote a parafunctional behavior within the cranio-cervical-mandibular-complex with unknown repercussions. The aim of this study was to find any association between the dental inter-arch relationship and the practice of a wind or string instrument.

Methods: A sample of 77 musicians, divided in two groups of wind (n = 50) and string instrumentalists (n = 27), had a lateral cephalogram taken to compare six cephalometric parameters following the Rickett's analysis (maxilla position, mandible position, facial type, skeletal class, upper incisor and lower incisor inclination). Read More

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http://dx.doi.org/10.1186/s12880-020-00455-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249404PMC

Application of CareDose 4D combined with Karl 3D technology in the low dose computed tomography for the follow-up of COVID-19.

BMC Med Imaging 2020 05 24;20(1):56. Epub 2020 May 24.

Department of Radiology, China Resources & WISCO General Hospital, Wuhan, 430080, China.

Background: Coronavirus disease 2019 (COVID-19) is a highly infectious disease caused by the new coronavirus. Previous studies have shown that the chest CT examination plays an important role in the diagnosis and monitoring of COVID-19. However, some patients with COVID-19 had low white blood cell counts and reduced lymphocyte ratios. Read More

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http://dx.doi.org/10.1186/s12880-020-00456-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7245769PMC

Fetal magnetic resonance imaging contributes to the diagnosis and treatment of meconium peritonitis.

BMC Med Imaging 2020 May 24;20(1):55. Epub 2020 May 24.

Department of Radiology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 318 Renmin Middle Road, Guangzhou, 510623, Guangdong Province, China.

Background: Meconium peritonitis (MP) is a rare fetal disease that needs to be urgently identified for surgical intervention. We report a series of 35 patients diagnosed prenatally with MP by magnetic resonance imaging (MRI), illustrate the imaging findings and investigate the predictive value of these findings for postpartum management.

Method: A consecutive cohort of patients diagnosed with MP who were born at our institution from 2013 to 2018 was enrolled retrospectively. Read More

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http://dx.doi.org/10.1186/s12880-020-00453-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7245915PMC

Retraction Note: Ultrasound versus temporal artery biopsy in patients with Giant cell arteritis: a prospective cohort study.

BMC Med Imaging 2020 May 21;20(1):54. Epub 2020 May 21.

Department of Cardiology, the first hospital of Lanzhou University, Lanzhou, 730000, China.

An amendment to this paper has been published and can be accessed via the original article. Read More

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http://dx.doi.org/10.1186/s12880-020-00454-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240922PMC

Feasibility of pulmonary MRI for nodule detection in comparison to computed tomography.

BMC Med Imaging 2020 May 20;20(1):53. Epub 2020 May 20.

Department of Radiology, The affiliated hospital of Chinese traditional medical university, Xian Yang China, -2# Weiyang Western Road, Xian Yang, 712000, China.

Background: To assess the feasibility of various magnetic resonance imaging (MRI) sequences for the detection of pulmonary nodules by comparing the detection rate of computed tomography (CT).

Methods: Forty-two patients with pulmonary nodules detected by multi-slice CT (MSCT) were prospectively enrolled in the present study between November 2016 and February 2017. Chest MRI was acquired within 24 h of CT. Read More

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http://dx.doi.org/10.1186/s12880-020-00451-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7238528PMC
May 2020
0.983 Impact Factor

Unexpected radiation pneumonitis after SIRT with significant decrease in DLCO with internal radiation exposure: a case report.

BMC Med Imaging 2020 May 19;20(1):52. Epub 2020 May 19.

Department of Nuclear Medicine, Marmara University Istanbul Pendik Education and Research Hospital, Fevzi Çakmak Mah. Muhsin Yazicioglu Cad. No:10 Ust Kaynarca / Pendik, 34899, Istanbul, Turkey.

Background: In the last years, Selective Internal Radiation Therapy (SIRT), using biocompatible Yttrium-90 (90Y) labeled microspheres have emerged for the treatment of malignant hepatic tumors. Unfortunately, a significant part of 90Y-labeled microspheres may shunt to the lungs after intraarterial injection. It can be predictable by infusing technetium-99 m-labeled macro-aggregated albumin particles through a catheter placed in the proper hepatic artery depending on the lobe to be treated with performing a quantitative lung scintigraphy. Read More

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http://dx.doi.org/10.1186/s12880-020-00452-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7236282PMC

Computed tomography colonography versus colonoscopy for detection of colorectal cancer: a diagnostic performance study.

BMC Med Imaging 2020 May 18;20(1):51. Epub 2020 May 18.

Department of Radiology, Xiantao First People's Hospital Affiliated to Yangtze University, Xiantao, 433000, Hubei, China.

Background: Colonoscopy is the reference standard for the detection of colorectal cancer but it is an invasive technique and has the risk of bowel perforation and bleeding. Unlike colonoscopy, sedation is not required in computed tomography colonography and requires additional reassurance endoscopy. The objectives of the study were to compare the diagnostic performance of computed tomography colonography against colonoscopy for a diagnosis of colorectal cancer. Read More

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http://dx.doi.org/10.1186/s12880-020-00446-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7236500PMC

Clinical and ultrasonographic features of medullary thyroid microcarcinomas compared with papillary thyroid microcarcinomas: a retrospective analysis.

BMC Med Imaging 2020 May 14;20(1):49. Epub 2020 May 14.

Ultrasound Department, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin Er Rd, Shanghai, 200025, China.

Background: To identify the sonographic features that help to differentiate medullary thyroid microcarcinomas (MTMCs) from papillary thyroid microcarcinomas (PTMCs).

Methods: A total of 46 MTMCs in 41 patients and 136 PTMCs in 104 patients that were proven by surgery and pathology were included in the study. Patient age and nodule size were analyzed by independent sample t-tests, and sex, multiplicity and cervical lymph node metastases were analyzed by χ or Fisher's exact tests. Read More

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http://dx.doi.org/10.1186/s12880-020-00444-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7227110PMC

Grading of Glioma: combined diagnostic value of amide proton transfer weighted, arterial spin labeling and diffusion weighted magnetic resonance imaging.

BMC Med Imaging 2020 May 14;20(1):50. Epub 2020 May 14.

Department of Radiology, Xijing Hospital, Xi'an, ShaanXi, China.

Background: To investigate the ability of amide proton transfer (APT) weighted magnetic resonance imaging (MRI), arterial spin labeling (ASL), diffusion weighted imaging (DWI) and the combination for differentiating high-grade gliomas (HGGs) from low-grade gliomas (LGGs).

Methods: Twenty-seven patients including nine LGGs and eighteen HGGs underwent conventional, APT, ASL and DWI MRI with a 3.0-T MR scanner. Read More

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http://dx.doi.org/10.1186/s12880-020-00450-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7227252PMC

Comparison of three dimensional reconstruction and conventional computer tomography angiography in patients undergoing zero-ischemia laparoscopic partial nephrectomy.

BMC Med Imaging 2020 May 6;20(1):47. Epub 2020 May 6.

Department of Urology, Shanghai Jiao Tong University School of Medicine affiliated Ren Ji Hospital, 160 Pu Jian Road, 200127, Shanghai, People's Republic of China.

Background: With the development of three dimensional (3D) reconstruction and printing technology, it has been widely using in the field of urology. However, there have been few studies reporting the role of 3D reconstruction in zero-ischemia partial nephrectomy (PN). The aim of this study was to assess the role of 3D reconstruction and conventional computer tomography angiography (CTA) in zero-ischemia laparoscopic partial nephrectomy (LPN). Read More

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http://dx.doi.org/10.1186/s12880-020-00445-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7201555PMC

Localized biphasic malignant mesothelioma presenting as a giant pelvic wall mass: a rare case report and literature review.

BMC Med Imaging 2020 May 6;20(1):48. Epub 2020 May 6.

Department of Radiology, The First Affiliated Hospital of Dalian Medical University, Xigang district, Zhongshan road, No.222, Dalian, China.

Background: Localized biphasic MPeM is rare in clinical practice, we reviewed 8 cases of localized biphasic MPeM (including our present case), and summarized the clinical and imaging features of the disease.

Case Presentation: We reported a 79-year-old man with chief complaint of a narrowing in the caliber of the stool for one year. A soft tissue shadow was occasionally found by CT examination in the right pelvic wall, and it was diagnosed as localized biphasic malignant peritoneal mesothelioma (MPeM) by postoperative pathology. Read More

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http://dx.doi.org/10.1186/s12880-020-00443-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7203907PMC
May 2020
0.983 Impact Factor

Application of contrast-enhanced ultrasonography for large cell neuroendocrine carcinoma in the urinary bladder: a case report.

BMC Med Imaging 2020 May 3;20(1):46. Epub 2020 May 3.

Department of Medical Ultrasonics, Institute of Diagnostic and Interventional Ultrasound, The First Affiliated Hospital of Sun Yat-Sen University, 7/F, 2nd Building, 58# Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.

Background: Large cell neuroendocrine carcinoma (LCNEC) of the urinary bladder is an uncommon malignant bladder tumor, and the overall prognosis is poor. Contrast-enhanced ultrasound (CEUS) provides a new effective modality for tumor detection and diagnosis.

Case Presentation: A 30-year-old man complained of repeated painless gross haematuria for half a month. Read More

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http://dx.doi.org/10.1186/s12880-020-00447-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7197184PMC
May 2020
0.983 Impact Factor

Diagnostic performance of standard breast MR imaging compared to dedicated axillary MR imaging in the evaluation of axillary lymph node.

BMC Med Imaging 2020 May 1;20(1):45. Epub 2020 May 1.

Department of Radiology, Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43 gil, Songpa-gu, Seoul, 05505, South Korea.

Background: Breast magnetic resonance (MR) imaging does not usually assess axillary lymph nodes -using dedicated axillary sequence. The additional utility of dedicated axillary sequence is poorly understood. We evaluated the diagnostic performance of dedicated axillary imaging sequence for evaluation of axillary lymph node. Read More

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http://dx.doi.org/10.1186/s12880-020-00449-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7195753PMC

A melting, encapsulated, calcified pulmonary nodule in a healthy 51-year-old woman: a case report.

BMC Med Imaging 2020 May 1;20(1):44. Epub 2020 May 1.

School of Medicine, Tzu Chi University, Hualien, Taiwan.

Background: Foreign body aspiration is less common in healthy adults, which makes diagnosis difficult. Early detection of smaller/sharp foreign bodies in the distal airway is more difficult because patients might have no symptoms and imaging studies could appear normal. Here we describe the course of a small, sharp foreign body (chicken bone) lodged in the distal airway of a healthy middle-aged woman. Read More

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http://dx.doi.org/10.1186/s12880-020-00448-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7195784PMC

Value of T1 mapping on gadoxetic acid-enhanced MRI for microvascular invasion of hepatocellular carcinoma: a retrospective study.

BMC Med Imaging 2020 Apr 28;20(1):43. Epub 2020 Apr 28.

Medical College, Nantong University, Nantong, Jiangsu, China.

Background: To evaluate the utility of non-invasive parameters derived from T1 mapping and diffusion-weighted imaging (DWI) on gadoxetic acid-enhanced MRI for predicting microvascular invasion (MVI) of hepatocellular carcinoma (HCC).

Methods: A total of 94 patients with single HCC undergoing partial hepatectomy was analyzed in this retrospective study. Preoperative T1 mapping and DWI on gadoxetic acid-enhanced MRI was performed. Read More

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http://dx.doi.org/10.1186/s12880-020-00433-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7189724PMC

A quantitative MRI index for assessing the severity of hippocampal sclerosis in temporal lobe epilepsy.

BMC Med Imaging 2020 Apr 25;20(1):42. Epub 2020 Apr 25.

Department of Radiology, Peking Union Medical College Hospital, Beijing, China.

Background: Hippocampal sclerosis (HS) is associated with post-surgery outcome in patients with temporal lobe epilepsy (TLE), and an automated method that quantifies HS severity is still lacking. Here, we aim to propose an MRI-based HS index (HSI) that integrates hippocampal volume and FLAIR signal to measure the severity of HS.

Methods: Forty-two pre-surgery TLE patients were included retrospectively, with T1-weighted (T1W) and FLAIR images acquired from each subject. Read More

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http://dx.doi.org/10.1186/s12880-020-00440-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7183666PMC

Non-rigid image registration of 4D-MRI data for improved delineation of moving tumors.

BMC Med Imaging 2020 Apr 23;20(1):41. Epub 2020 Apr 23.

Department of Radiation Oncology, University of Wuerzburg, Josef-Schneider-Str. 11, 97080, Wuerzburg, Germany.

Background: To increase the image quality of end-expiratory and end-inspiratory phases of retrospective respiratory self-gated 4D MRI data sets using non-rigid image registration for improved target delineation of moving tumors.

Methods: End-expiratory and end-inspiratory phases of volunteer and patient 4D MRI data sets are used as targets for non-rigid image registration of all other phases using two different registration schemes: In the first, all phases are registered directly (dir-Reg) while next neighbors are successively registered until the target is reached in the second (nn-Reg). Resulting data sets are quantitatively compared using diaphragm and tumor sharpness and the coefficient of variation of regions of interest in the lung, liver, and heart. Read More

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http://dx.doi.org/10.1186/s12880-020-00439-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7178986PMC

Performance of TGSE BLADE DWI compared with RESOLVE DWI in the diagnosis of cholesteatoma.

BMC Med Imaging 2020 Apr 19;20(1):40. Epub 2020 Apr 19.

Department of Digitalization, Siemens Shenzhen Magnetic Resonance, Ltd., Shenzhen, China.

Background: Based on its high resolution in soft tissue, MRI, especially diffusion-weighted imaging (DWI), is increasingly important in the evaluation of cholesteatoma. The purpose of this study was to evaluate the role of the 2D turbo gradient- and spin-echo (TGSE) diffusion-weighted (DW) pulse sequence with the BLADE trajectory technique in the diagnosis of cholesteatoma at 3 T and to qualitatively and quantitatively compare image quality between the TGSE BLADE and RESOLVE methods.

Method: A total of 42 patients (23 males, 19 females; age range, 7-65 years; mean, 40. Read More

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http://dx.doi.org/10.1186/s12880-020-00438-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7168963PMC

Cone beam computed tomographic analysis of the spatial limitation during mandibular arch distalization.

BMC Med Imaging 2020 Apr 15;20(1):39. Epub 2020 Apr 15.

School of Dentistry and Graduate Program of Dental Science, College of Dental Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung, 80708, Taiwan.

Background: In the literature, attempts are seldom made to quantify spatial limitation during mandibular arch distalization. This study aimed to investigate the spatial limitations associated with cortical contact with the mandibular second molar during mandibular arch distalization.

Methods: The study population included 67 individuals who had undergone cone beam computed tomography (CBCT) (34 male and 33 female; mean age: 23. Read More

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http://dx.doi.org/10.1186/s12880-020-00441-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7161296PMC

Improving the diagnosis of common parotid tumors via the combination of CT image biomarkers and clinical parameters.

BMC Med Imaging 2020 Apr 15;20(1):38. Epub 2020 Apr 15.

Department of Radiology, Chongqing General Hospital, University of Chinese Academy of Sciences, No.104 Pipashan Main St, Yuzhong District, Chongqing, 400014, China.

Background: Our study aims to develop and validate diagnostic models of the common parotid tumors based on whole-volume CT textural image biomarkers (IBMs) in combination with clinical parameters at a single institution.

Methods: The study cohort was composed of 51 pleomorphic adenoma (PA) patients and 42 Warthin tumor (WT) patients. Clinical parameters and conventional image features were scored retrospectively and textural IBMs were extracted from CT images of arterial phase. Read More

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http://dx.doi.org/10.1186/s12880-020-00442-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7161241PMC

Weakly-supervised convolutional neural networks of renal tumor segmentation in abdominal CTA images.

BMC Med Imaging 2020 Apr 15;20(1):37. Epub 2020 Apr 15.

LIST, Key Laboratory of Computer Network and Information Integration, Southeast University, Ministry of Education, Nanjing, China.

Background: Renal cancer is one of the 10 most common cancers in human beings. The laparoscopic partial nephrectomy (LPN) is an effective way to treat renal cancer. Localization and delineation of the renal tumor from pre-operative CT Angiography (CTA) is an important step for LPN surgery planning. Read More

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http://dx.doi.org/10.1186/s12880-020-00435-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7161012PMC
April 2020
0.983 Impact Factor

The utility of multi-stack alignment and 3D longitudinal image registration to assess bone remodeling in rheumatoid arthritis patients from second generation HR-pQCT scans.

BMC Med Imaging 2020 Apr 7;20(1):36. Epub 2020 Apr 7.

Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary AB3280 Hospital Dr NW, Calgary, Alberta, T2N 4Z6, Canada.

Background: Medical imaging plays an important role in determining the progression of joint damage in rheumatoid arthritis (RA). High resolution peripheral quantitative computed tomography (HR-pQCT) is a sensitive tool capable of evaluating bone microarchitecture and erosions, and 3D rigid image registration can be used to visualize and quantify bone remodeling over time. However, patient motion during image acquisition can cause a "stack shift" artifact resulting in loss of information and reducing the number of erosions that can be analyzed using HR-pQCT. Read More

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http://dx.doi.org/10.1186/s12880-020-00437-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7140503PMC

Imaging study of coronal structural matching of the distal radius in normal adults.

BMC Med Imaging 2020 Apr 3;20(1):35. Epub 2020 Apr 3.

Department of Orthopedics, Tongji Hospital, School of Medicine,, Tongji University, 389 Xincun Road, Shanghai, 200065, China.

Background: As an important anatomical basis, coronal structural position matching of the distal radius has long been lacking in terms of a quantitative understanding, and such matching is correlated with the postoperative functional recovery of patients with distal radius fracture. The purpose of this study was to explore the degree of coronal structural matching of the distal radius in a normal population and to improve the detailed anatomical knowledge of the distal radius.

Methods: The reconstructed 3D data were analysed using 3-matic research software from thin-film CT images of 80 normal adults, and the coronal structural matching of the distal radius was studied from two aspects: 1) self-matching of the distal radius; and 2) matching between the distal radius and ulna (i. Read More

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http://dx.doi.org/10.1186/s12880-020-00434-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7118864PMC

Novel foetal echocardiographic image processing software (5D Heart) improves the display of key diagnostic elements in foetal echocardiography.

BMC Med Imaging 2020 Apr 3;20(1):33. Epub 2020 Apr 3.

Department of Diagnostic Ultrasound & Echocardiography, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, No. 3 East Qingchun Road, Hangzhou, 310016, People's Republic of China.

Background: To evaluate the clinical value of foetal intelligent navigation echocardiography (5D Heart) for the display of key diagnostic elements in basic sections.

Methods: 3D volume datasets of 182 normal singleton foetuses were acquired with a four chamber view by using a volume probe. After processing the datasets by using 5D Heart, eight cardiac diagnostic planes were demonstrated, and the image qualities of the key diagnostic elements were graded by 3 doctors with different experiences in performing foetal echocardiography. Read More

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http://dx.doi.org/10.1186/s12880-020-00429-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7118886PMC

Altered Achilles tendon morphology in individuals with chronic post-stroke hemiparesis: a case report.

BMC Med Imaging 2020 Apr 3;20(1):34. Epub 2020 Apr 3.

Department of Physical Therapy, University of Nevada, Las Vegas, 4505 South Maryland Parkway, Box 453029, Las Vegas, Nevada, 89154, USA.

Background: Individuals post-stroke walk slowly and with more effort, which puts them at higher risks for falls. The slow walking speed results from insufficient propulsive forces generated by the paretic leg. Current rehabilitative efforts to improve walking function target increasing propulsive forces, but overlook the muscle-tendon unit. Read More

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http://dx.doi.org/10.1186/s12880-020-00431-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7119093PMC

The independent indicators for differentiating renal cell carcinoma from renal angiomyolipoma by contrast-enhanced ultrasound.

BMC Med Imaging 2020 Mar 30;20(1):32. Epub 2020 Mar 30.

Department of Ultrasound, Huadong Hospital, Fudan University, 211 West Yan'an Road, Shanghai, China.

Background: The value of contrast-enhanced ultrasound (CEUS) in differentiating between renal cell carcinoma (RCC) and angiomyolipoma (AML) was analyzed. The purpose of this study was to identify the independent indicators of CEUS for predicting RCC.

Methods: A total of 172 renal tumors (150 RCCs, 22 AMLs) in 165 patients underwent conventional ultrasound (CUS) and CEUS examinations before radical or partial nephrectomy, and the features on CUS and CEUS were analyzed. Read More

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http://dx.doi.org/10.1186/s12880-020-00436-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7104488PMC

The application and accuracy of feature matching on automated cephalometric superimposition.

BMC Med Imaging 2020 03 19;20(1):31. Epub 2020 Mar 19.

Department of Orthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Street, Haidian District, Beijing, 100081, China.

Background: The aim of this study was to establish a computer-aided automated method for cephalometric superimposition and to evaluate the accuracy of this method based on free-hand tracing.

Methods: Twenty-eight pairs of pre-treatment (T) and post-treatment (T) cephalograms were selected. Structural superimpositions of the anterior cranial base, maxilla and mandible were independently completed by three operators performing traditional hand tracing methods and by computerized automation using the feature matching algorithm. Read More

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http://dx.doi.org/10.1186/s12880-020-00432-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7083061PMC

Percentage fat fraction in magnetic resonance imaging: upgrading the osteoporosis-detecting parameter.

BMC Med Imaging 2020 03 17;20(1):30. Epub 2020 Mar 17.

Department of Orthopedics, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, 710054, China.

Background: Osteoporosis (OP) is a systemic metabolic bone disorder identified as an essential health issue worldwide. Orthopedic imaging approaches were commonly used with some limitations. Thus, our study aimed to investigate the diagnostic value of magnetic resonance spectroscopy (1-H MRS) and m-Dixon-Quant in OP. Read More

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http://dx.doi.org/10.1186/s12880-020-00423-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7079407PMC

Automatic quantification of left ventricular function by medical students using ultrasound.

BMC Med Imaging 2020 03 16;20(1):29. Epub 2020 Mar 16.

Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, NTNU, Prinsesse Kristinas gate 3, 7030, Trondheim, Norway.

Background: Automatic analyses of echocardiograms may support inexperienced users in quantifying left ventricular (LV) function. We have developed an algorithm for fully automatic measurements of mitral annular plane systolic excursion (MAPSE) and mitral annular systolic (S') and early diastolic (e') peak velocities. We aimed to study the influence of user experience of automatic measurements of these indices in echocardiographic recordings acquired by medical students and clinicians. Read More

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http://dx.doi.org/10.1186/s12880-020-00430-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7077164PMC