1,364,869 results match your criteria Ultrasonography Cardiac


Ulnar Artery Occlusion and severity markers of vasculopathy in Systemic sclerosis: a multicenter cross-sectional study.

Arthritis Rheumatol 2018 Dec 15. Epub 2018 Dec 15.

Department of Internal Medicine and Clinical Immunology, CHU Rennes, Univ Rennes, France.

Objective: to evaluate the association of ulnar artery occlusion (UAO) assessed by Doppler Ultrasonography (dUS) with the severity markers of systemic sclerosis (SSc) METHODS: 204 unselected patients fulfilling 2013 ACR/EULAR classification criteria for SSc were included in this cross-sectional multicenter study. All patients benefit from bilateral hand dUS evaluating the presence of UAO and clinical/paraclinical visceral evaluation according to current guidelines. Univariable and multivariable ordinal regression models were conducted, grading the severity of UAO as "no UAO", "only one UAO" and "UAO on both hands" and assessing its association with clinical features of SSc. Read More

View Article
December 2018
1 Read

Breast lesion detection and characterization with contrast-enhanced magnetic resonance imaging: Prospective randomized intraindividual comparison of gadoterate meglumine (0.15 mmol/kg) and gadobenate dimeglumine (0.075 mmol/kg) at 3T.

J Magn Reson Imaging 2018 Dec 15. Epub 2018 Dec 15.

Department of Biomedical Imaging and Image-guided Therapy, Division of Molecular and Gender Imaging, Medical University of Vienna, Vienna, Austria.

Background: Contrast-enhanced magnetic resonance imaging (CE-MRI) of the breast is highly sensitive for breast cancer detection. Multichannel coils and 3T scanners can increase signal, spatial, and temporal resolution. In addition, the T -reduction effect of a gadolinium-based contrast agent (GBCA) is higher at 3T. Read More

View Article
December 2018

Pleomorphic and atypical multinucleated giant cells in solid pseudopapillary neoplasm of pancreas: A diagnostic pitfall in cytology and a review of the literature.

Diagn Cytopathol 2018 Dec 14. Epub 2018 Dec 14.

Department of Laboratory Medicine, Cleveland Clinic, Cleveland, Ohio.

Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low-grade malignancy typically occurring in young women. Occasionally, these neoplasms present with pleomorphic to atypical multinucleated giant tumor cells which may mimic high-grade malignancy. Our patient is a 25-year-old male who presented with one year of intermittent epigastric pain. Read More

View Article
December 2018

Diagnostic value of computed tomography combined with ultrasonography in detecting cervical recurrence in patients with thyroid cancer.

Head Neck 2018 Dec 14. Epub 2018 Dec 14.

Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea.

Background: To determine the diagnostic role of CT added to ultrasound for the diagnosis of recurrent differentiated thyroid cancer (DTC) and to evaluate potential benefits for patients.

Methods: A total of 193 patients with recurrent DTC were retrospectively included. The diagnostic performances of ultrasound and combination of ultrasound and CT (ultrasound/CT) in detecting recurrence were compared. Read More

View Article
December 2018

Pediatric ultrasonography of the pancreas: normal and abnormal findings.

J Ultrasound 2018 Dec 14. Epub 2018 Dec 14.

Paediatric Radiology Department, "Federico II" University Hospital, Naples, Italy.

The pancreas is easily investigated in children thanks to the relative lack of fat tissue and the large left hepatic lobe with an optimal acoustic window. The use of high frequency, even linear transducers, usually results in detailed images of all pancreatic areas. A wide spectrum of pancreatic pathologic conditions can be identified and monitored at ultrasound although they are relatively uncommon during childhood compared to the adult. Read More

View Article
December 2018

Pediatric encephalic ultrasonography: the essentials.

J Ultrasound 2018 Dec 14. Epub 2018 Dec 14.

Radiology Department, "Santobono-Pausilipon" Children Hospital, Naples, Italy.

Nowadays, cranial ultrasonography (US) of the newborn represents the first imaging method in brain damage study and its possible outcomes. This exam is performed using the natural fontanelles, especially the anterior one. It is fast, non-invasive and does not produce any side effect. Read More

View Article
December 2018

Automatic Thalamus Segmentation on Unenhanced 3D T1 Weighted Images: Comparison of Publicly Available Segmentation Methods in a Pediatric Population.

Neuroinformatics 2018 Dec 14. Epub 2018 Dec 14.

Department of Diagnostic Radiology, American University of Beirut Medical Center, Riad El-Solh, P.O.Box: 11-0236, Beirut, 1107 2020, Lebanon.

The anatomical structure of the thalamus renders its segmentation on 3DT1 images harder due to its low tissue contrast, and not well-defined boundaries. We aimed to investigate the differences in the precision of publicly available segmentation techniques on 3DT1 images acquired at 1.5 T and 3 T machines compared to the thalamic manual segmentation in a pediatric population. Read More

View Article
December 2018

High Speed Pneumatic Stepper Motor for MRI Applications.

Ann Biomed Eng 2018 Dec 14. Epub 2018 Dec 14.

School of Electrical and Computer Engineering, University of Georgia, Athens, GA, USA.

Presented in this paper is an exploration into the efficacy of a plastic, four-cylinder piston pneumatic motor designed for driving medical instruments inside magnetic resonance imaging (MRI) systems. Because of the increasing use of MRI for diagnostic and interventional purposes and the benefits that could be realized by operating with real-time MR image guidance, there exists a significant need for MRI compliant surgical devices. Some type of actuation mechanism is necessary to drive such devices. Read More

View Article
December 2018

High-resolution flat panel CT versus 3-T MR arthrography of the wrist: initial results in vivo.

Eur Radiol 2018 Dec 14. Epub 2018 Dec 14.

Department of Diagnostic and Interventional Radiology, Medical School Hannover, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.

Objectives: The objective of this study was to compare the diagnostic performance of direct C-arm flat panel computed tomography arthrography (FPCT-A) with direct magnetic resonance arthrography (MR-A) of the wrist in patients with clinically suspected pathologies.

Methods: Forty-nine patients underwent tri-compartmental wrist arthrography. FPCT-A was acquired using a high-resolution acquisition mode, followed by a 3-T MR exam using a dedicated wrist coil. Read More

View Article
December 2018

How to utilize LR-M features of the LI-RADS to improve the diagnosis of combined hepatocellular-cholangiocarcinoma on gadoxetate-enhanced MRI?

Eur Radiol 2018 Dec 14. Epub 2018 Dec 14.

Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.

Objectives: To investigate the diagnostic accuracy of each LR-M feature defined in version 2017 of the Liver Imaging Reporting and Data System (LI-RADS) and determine the optimal LR-M feature for differentiating combined hepatocellular-cholangiocarcinoma (cHCC-CCA) and hepatocellular carcinoma (HCC) on gadoxetate-enhanced magnetic resonance imaging (MRI).

Methods: Ninety-nine patients with pathologically proven cHCC-CCA (n = 33) or HCC (n = 66) after surgery were identified. Two radiologists retrospectively assessed preoperative gadoxetate-enhanced MRI for features favoring non-HCC malignancies (LR-M features) according to LI-RADS version 2017. Read More

View Article
December 2018

Wavelet-based reconstruction of dynamic susceptibility MR-perfusion: a new method to visualize hypervascular brain tumors.

Eur Radiol 2018 Dec 14. Epub 2018 Dec 14.

Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.

Objectives: Parameter maps based on wavelet-transform post-processing of dynamic perfusion data offer an innovative way of visualizing blood vessels in a fully automated, user-independent way. The aims of this study were (i) a proof of concept regarding wavelet-based analysis of dynamic susceptibility contrast (DSC) MRI data and (ii) to demonstrate advantages of wavelet-based measures compared to standard cerebral blood volume (CBV) maps in patients with the initial diagnosis of glioblastoma (GBM).

Methods: Consecutive 3-T DSC MRI datasets of 46 subjects with GBM (mean age 63. Read More

View Article
December 2018

Role of diffusional kurtosis imaging in grading of brain gliomas: a protocol for systematic review and meta-analysis.

BMJ Open 2018 Dec 14;8(12):e025123. Epub 2018 Dec 14.

Lysholm Department of Neuroradiology, The National Hospital for Neurology and Neurosurgery UCL Hospitals NHS Trust, London, UK.

Introduction: Central nervous system (CNS) gliomas are the most common primary intra-axial brain tumours and pose variable treatment response according to their grade, therefore, precise staging is mandatory. Histopathological analysis of surgical tumour samples is still deemed as the state-of-the-art staging technique for gliomas due to the moderate specificity of the available non-invasive imaging modalities. A recently evolved analysis of the tissue water diffusion properties, known as diffusional kurtosis imaging (DKI), is a dimensionless metric, which quantifies water molecules' degree of non-Gaussian diffusion, hence reflects tissue microenvironment's complexity by means of non-invasive diffusion-weighted MRI acquisitions. Read More

View Article
December 2018

Impact of Ga-PSMA-PET/CT on the radiotherapeutic approach for prostate cancer in comparison to CT - a retrospective analysis.

J Nucl Med 2018 Dec 14. Epub 2018 Dec 14.

Ludwig-Maximilians-University (LMU), Germany.

Gallium-prostate-specific membrane antigen positron emission tomography/computed tomography (Ga-PSMA PET/CT) offers unprecedented accuracy for staging of primary, persistent or recurrent prostate cancer. Thus, we hypothesized that PSMA PET/CT prior to radiotherapy significantly impacts the radiotherapeutic approach in comparison to the current standard of CT based approach. Between February 2014 and December 2017, a total of 172 patients received PSMA PET/CT before radiotherapy and were included in this retrospective analysis. Read More

View Article
December 2018

Combination of Ga-PSMA PET/CT and multiparameter MRI improves the detection of clinically significant prostate cancer: a lesion by lesion analysis.

J Nucl Med 2018 Dec 14. Epub 2018 Dec 14.

Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, China.

To explore whether Ga-PSMA PET/CT (PET/CT) or the combination of mpMRI and Ga-PSMA PET/CT (com-MRI/PET) can improve the detection of csPCa. We retrospectively enrolled 54 patients who underwent both mpMRI and PET/CT before radical prostatectomy. Regions of interest (ROI) on imaging from mpMRI, PET/CT and pathology were marked. Read More

View Article
December 2018

Rapid modulation of PSMA expression by Androgen deprivation: Serial Ga PSMA-11 PET in men with hormone sensitive and castrate resistant prostate cancer commencing androgen blockade.

J Nucl Med 2018 Dec 14. Epub 2018 Dec 14.

Garvan Institute of Medical Research.

Prostate specific membrane antigen (PSMA) may be targeted for both diagnostic and therapeutic purposes in the management of prostate cancer (PCa). In pre-clinical models, androgen blockade (AB) increases expression of PSMA in both hormone sensitive and castrate resistant xenotypes. The aim of this study was to evaluate the effect of AB treatment on Ga68PSMA-11 PET imaging in hormone naive (Luteinising hormone-releasing hormone (LHRH) ± bicalutamide), and in castrate resistant men (enzalutamide or abiraterone) with metastatic PCa. Read More

View Article
December 2018

Ultrasound findings in palindromic rheumatism.

Ann Rheum Dis 2018 Dec 14. Epub 2018 Dec 14.

Rheumatology Department, Hospital Mútua de Terrassa, Barcelona, Spain.

View Article
December 2018

Pancreas Volume Declines During the First Year After Diagnosis of Type 1 Diabetes and Exhibits Altered Diffusion at Disease Onset.

Diabetes Care 2018 Dec 14. Epub 2018 Dec 14.

Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN

Objective: This study investigated the temporal dynamics of pancreas volume and microstructure in children and adolescents with recent-onset type 1 diabetes (T1D) and individuals without diabetes, including a subset expressing autoantibodies associated with the early stages of T1D.

Research Design And Methods: MRI was performed in individuals with recent-onset stage 3 T1D ( = 51; median age 13 years) within 100 days after diagnosis (mean 67 days), 6 months, and 1 year postdiagnosis. Longitudinal MRI measurements were also made in similarly aged control participants ( = 57) and in autoantibody-positive individuals without diabetes ( = 20). Read More

View Article
December 2018

White matter organization in developmental coordination disorder: A pilot study exploring the added value of constrained spherical deconvolution.

Neuroimage Clin 2018 Dec 3. Epub 2018 Dec 3.

Mary MacKillop Institute for Health Research, Faculty of Health Sciences, Australian Catholic University, Melbourne, Australia.

Previous studies of white matter organization in sensorimotor tracts in developmental coordination disorder (DCD) have adopted diffusion tensor imaging (DTI), a method unable to reconcile pathways with 'crossing fibres'. In response to limitations of the commonly adopted DTI approach, the present study employed a framework that can reconcile the 'crossing fibre' problem (i.e. Read More

View Article
December 2018

Diagnostic sensitivity of electrophysiology and ultrasonography in ulnar neuropathies of different severity.

Clin Neurophysiol 2018 Dec 7. Epub 2018 Dec 7.

Department of Neurology and Clinical Neurophysiology, Auckland District Health Board, Auckland Hospital, Auckland, New Zealand.

Objective: To assess the diagnostic performance of electrophysiology and nerve ultrasound in ulnar neuropathies of varying clinical severity in 135 consecutive patients.

Methods: Clinical severity of ulnar neuropathy was graded on a 4 point scale from very mild (symptoms only) to severe (marked atrophy of intrinsic hand muscles). Sensitivity and localization ability of electrophysiology and nerve ultrasound were assessed for each point of the scale. Read More

View Article
December 2018

Differentiating benign from malignant cardiac tumors with cardiac magnetic resonance imaging.

J Thorac Cardiovasc Surg 2018 Oct 6. Epub 2018 Oct 6.

Houston Methodist DeBakey Heart and Vascular Center, Houston, Tex. Electronic address:

Background: The purpose of this analysis is to describe the differences in cardiac magnetic resonance characteristics between benign and malignant tumors, which would be helpful for surgical planning.

Methods: This was a prospective cohort study of 130 patients who underwent cardiac magnetic resonance imaging for evaluation of a suspected cardiac mass. After excluding thrombi and tumors without definitive diagnosis, 66 tumors were evaluated for morphologic features and tissue composition. Read More

View Article
October 2018

Pediatric Fatty Liver and Obesity: Not Always Justa Matter of Non-Alcoholic Fatty Liver Disease.

Children (Basel) 2018 Dec 13;5(12). Epub 2018 Dec 13.

Pediatrics Residency Joint Programs, University of Naples Federico II, 80131 Naples, Italy.

Obesity-related non-alcoholic fatty liver disease (NAFLD) represents the most common cause of pediatric liver disease due to overweight/obesity large-scale epidemics. In clinical practice, diagnosis is usually based on clinical features, blood tests, and liver imaging. Here, we underline the need to make a correct differential diagnosis for a number of genetic, metabolic, gastrointestinal, nutritional, endocrine, muscular, and systemic disorders, and for iatrogenic/viral/autoimmune hepatitis as well. Read More

View Article
December 2018

Gender- and Age-Related Changes in Trunk Muscle Composition Using Chemical Shift Encoding-Based Water⁻Fat MRI.

Nutrients 2018 Dec 13;10(12). Epub 2018 Dec 13.

Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675 Munich, Germany.

Ageing, sarcopenia, and malnutrition are associated with quantitative and qualitative changes of body composition. There are several imaging modalities, including magnetic resonance imaging (MRI), for the assessment of trunk muscle tissue composition. In this study, we investigated the gender- and age-related changes in trunk muscle composition using chemical shift encoding-based water⁻fat MRI. Read More

View Article
December 2018

Selective infarct zone imaging with intravenous acoustically activated droplets.

PLoS One 2018 14;13(12):e0207486. Epub 2018 Dec 14.

University of Nebraska Medical Center, Omaha, NE, United States of America.

Background: Microbubbles (MB) can be compressed to nanometer-sized droplets and reactivated with diagnostic ultrasound; these reactivated MB possess unique imaging characteristics.

Objective: We hypothesized that droplets formed from compressing Definity MB may be used for infarct-enhancement imaging.

Methods: Fourteen rats underwent ligation of their left anterior descending (LAD) artery, and five pigs underwent 90 minute balloon occlusions of their mid LAD. Read More

View Article
December 2018

Usefulness of noncontrast MRI in differentiation between gallbladder carcinoma and benign conditions manifesting as focal mild wall thickening.

Clin Imaging 2018 Dec 4;54:63-70. Epub 2018 Dec 4.

Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.

Background: Magnetic resonance imaging (MRI) is a reliable imaging tool for evaluating gallbladder carcinoma, but it is costly and time-consuming.

Purpose: To compare noncontrast MRI with multidetector row CT (MDCT) and gadoxetic acid-enhanced whole MRI in distinguishing gallbladder carcinoma from benign disease.

Materials And Methods: 101 patients (36 with gallbladder carcinoma and 65 with benign disease) with mild focal gallbladder wall thickening were included. Read More

View Article
December 2018

Levels of circulating soluble LR11, a regulator of smooth muscle cell migration, are highly associated with atherosclerotic plaques in patients with carotid artery stenosis.

Clin Chim Acta 2018 Dec 11. Epub 2018 Dec 11.

Department of Clinical-Laboratory and Experimental-Research Medicine, Toho University Sakura Medical Center, 564-1 Shimoshizu, Sakura 285-8741, Japan. Electronic address:

Background: The levels of plasma sLR11, released from intimal SMCs, are positively associated with intima-media thickness (IMT) in asymptomatic subjects. We have evaluated the yet unknown pathological significance of sLR11 for plaque conditions in patients with carotid artery stenosis.

Methods: The presence of LR11 in carotid plaques was investigated using autopsy specimens. Read More

View Article
December 2018

A facile on-bead method for fully symmetric tetra-substituted DOTA derivatizations using peptoid moieties.

Biopolymers 2018 Dec 14:e23249. Epub 2018 Dec 14.

Department of Pharmacological & Pharmaceutical Sciences, University of Houston, 4849 Calhoun Rd, Health Building 2, Room 7033, Houston, Texas 77204-5037.

The metal-chelated 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) has made a significant impact on the field of diagnostic imaging. This imaging mechanism is largely dependent on the four side arm functionalities around the DOTA scaffold. We previously demonstrated the effect of peptoid residue modification on these DOTA side arms, thereby conferring diverse physiochemical properties to the imaging mechanism. Read More

View Article
December 2018

Diagnostic Value of the Magnetic Resonance Imaging With Intratympanic Gadolinium Administration (IT-Gd MRI) Versus Audio-Vestibular Tests in Menière's Disease: IT-Gd MRI Makes the Difference.

Otol Neurotol 2018 Dec 13. Epub 2018 Dec 13.

Albers-Schönberg Institute for Radiology in Hamburg, Germany.

Objective: Our aim was to evaluate the validity and reliability of clinically relevant tests in the diagnosis of Menière's disease (MD) according to the criteria formulated during 2015 as well as their efficacy in detecting endolymphatic hydrops (EH). The focus was on: three-dimensional fluid-attenuated inversion recovery-SPectral Attenuated Inversion Recovery (3D-FLAIR-SPAIR) sequences using 3 Tesla magnetic resonance imaging (3T MRI) performed 24 hours after intratympanic Gadolinium injection (IT-Gd) in comparison with the functional tests pure tone audiometry (PTA), caloric test, video head impulse test (vHIT), and cervical-vestibular-evoked-myogenic-potentials (cVEMP).

Study Design: Retrospective study. Read More

View Article
December 2018

Computed Tomography Imaging for Novel Therapies of Chronic Obstructive Pulmonary Disease.

J Thorac Imaging 2018 Dec 13. Epub 2018 Dec 13.

Department of Diagnostic and Interventional Radiology, University Hospital of Heidelberg.

Novel therapeutic options in chronic obstructive pulmonary disease (COPD) require delicate patient selection and thus demand for expert radiologists visually and quantitatively evaluating high-resolution computed tomography (CT) with additional functional acquisitions such as paired inspiratory-expiratory scans or dynamic airway CT. The differentiation between emphysema-dominant and airway-dominant COPD phenotypes by imaging has immediate clinical value for patient management. Assessment of emphysema severity, distribution patterns, and fissure integrity are essential for stratifying patients for different surgical and endoscopic lung volume reduction procedures. Read More

View Article
December 2018

[Diagnostic value of ultrasonic elastic strain ratio and elasticity score for thyroid micronodules of TI-RADS 4].

Authors:
Y Gao X Q Li S R Wang

Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Dec;32(23):1795-1797

Department of Ultrasound, Yantai Affiliated Hospital of Binzhou Medical University.

To investigate diagnostic value of ultrasonic elastic strain ratio and elasticity score for thyroid micronodules of TI-RADS 4. In total, 211 consecutive patients with 225 thyroid micronodules were enroled in the study, all the nodules were evaluated by TI-RADS criteria before and all of them were examined by elastic imaging. We set the histology as the reference standard. Read More

View Article
December 2018

[The role of SWE and ATA(2015) guidelines combined mode in differentiation malignant from benign of Bethesda Ⅲ thyroid nodules].

Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Sep;32(18):1400-1405

Department of Otorhinolaryngology Head and Neck Surgery, the First Affiliated Hospital of Hebei North University.

To evaluate the diagnostic value of the ATA (2015) ultrasound model, shear wave elastography (SWE), and ATA (2015)+SWE combinative modality for the diagnostic efficiency in thyroid nodules with Bethesda Classification Ⅲ indeterminate cytology, determine the diagnostic value of ultrasonography in Bethesda Classification Ⅲ indeterminate cytology.216 thyroid nodules that were initially diagnosed as AUS/FLUS by fine needle aspiration (FNA) were included in this study. The clinical data and two-dimensional ultrasonographic features were compared between the benign and malignant nodules. Read More

View Article
September 2018

[Value of 18F-FDG PET/CT and PET in diagnosing and staging extranodal nasal type natural killer/T-cell lymphoma:A Meta-analysis].

Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Dec;32(24):1876-1882

The First Hospital of Lanzhou University.

The aim of this study is to comprehensively evaluate the values of 18F-FDG PET/CT and PET in diagnosing extranodal nasal type natural killer/T cell lymphoma (ENKTL). Studies about ENKTL diagnosed by 18F-FDG PET/CT and PET until June 2018 were searched in the databases such as PubMed, Embase, Cochrane, Web of Science, CNKI, CBM, VIP and Wanfang. Two reviewers independently screened literature and extracted data strictly according to included and excluded criterion, and assessed bias risk by 11 items using QUADAS-2 gulidline. Read More

View Article
December 2018

Posttreatment surveillance PET/CT for HPV-associated oropharyngeal cancer.

Head Neck 2018 Dec 14. Epub 2018 Dec 14.

Department of Head and Neck Surgery, Kaiser Permanente Oakland Medical Center, Oakland, California.

Background: Surveillance positron emission tomography-computed tomography (PET/CT) is commonly used for treatment assessment of radiation therapy in head and neck cancer. However, human papillomavirus-associated oropharyngeal squamous cell carcinoma (HPV+OPSCC) patients represent a unique subpopulation, for which the utility of surveillance PET/CT has not been well studied.

Methods: In this retrospective chart review comprising 233 HPV+OPSCC patients, we evaluated surveillance PET/CT for diagnostic accuracy, downstream clinical impact, and survival. Read More

View Article
December 2018

Systematic review and meta-analysis on the role of prenatal magnetic resonance imaging in the era of fetal neurosonography: mild and moderate ventriculomegaly.

Ultrasound Obstet Gynecol 2018 Dec 14. Epub 2018 Dec 14.

Women´s Health and Perinatology Research Group, Department of Clinical Medicine, Faculty of Health Sciences, UiT-The Arctic University of Norway, Tromsø, Norway.

Objectives: To report the rate of additional anomalies detected exclusively on prenatal MRI in fetuses affected by isolated mild or moderate ventriculomegaly (VM) according to the type of ultrasound protocol adopted (dedicated neurosonography vs standard assessment of fetal brain) and to explore whether the diagnostic performance of fetal MRI in detecting such anomalies is affected by gestational age at scan and laterality of ventricular dilatation.

Methods: The primary aim was to report the rate of additional anomalies detected exclusively on prenatal MRI in fetuses affected by isolated mild and moderate VM (ventricular dilatation between 10-15 mm) undergoing compared to those not undergoing dedicated neurosonography, defined as a detail assessment of fetal brain according to the International Society of Ultrasound in Obstetrics and Gynecology guidelines. Medline, Embase, Cinahl and Clinicaltrials. Read More

View Article
December 2018

Initial evaluation of PET/CT with F-FSU-880 targeting prostate-specific membrane antigen in prostate cancer patients.

Cancer Sci 2018 Dec 13. Epub 2018 Dec 13.

Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

This first-in-man study was performed to evaluate the safety, whole-body distribution, dose estimation and lesion accumulation of F-FSU-880, a newly-developed probe targeting prostate-specific membrane antigen (PSMA). Six prostate cancer patients with known metastatic lesions underwent serial whole-body positron emission tomography/computed tomography (PET/CT) with F-FSU-880. Blood and urine were analyzed before and after PET/CT. Read More

View Article
December 2018

Development of a class prediction model to discriminate pancreatic ductal adenocarcinoma from pancreatic neuroendocrine tumor by MALDI mass spectrometry imaging.

Proteomics Clin Appl 2018 Dec 13:e1800046. Epub 2018 Dec 13.

R. Casadonte, J. Kriegsmann, Proteopath GmbH, Trier, Germany.

Purpose: To define proteomic differences between pancreatic ductal adenocarcinoma (pDAC) and pancreatic neuroendocrine tumor (pNET) by matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI).

Experimental Design: 93 pDAC and 126 pNET individual tissues were assembled in tissue microarrays and analyzed by MALDI MSI. The cohort was separated in a training (52 pDAC and 83 pNET) and validation set (41 pDAC and 43 pNET). Read More

View Article
December 2018

F-FDG PET/MRI vs MRI in patients with recurrent adenoid cystic carcinoma.

Head Neck 2018 Dec 13. Epub 2018 Dec 13.

Department of Nuclear Medicine, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.

Objectives: To evaluate and compare the diagnostic potential of F-fluorodeoxyglucose positron emission tomography/magnetic resonance imaging ( FDG-PET/MRI) and MRI for recurrence diagnostics after primary therapy in patients with adenoid cystic carcinoma (ACC).

Methods: A total of 32 dedicated head and neck F-FDG PET/MRI datasets were included in this analysis. MRI and F-FDG PET/MRI datasets were analyzed in separate sessions by two readers for tumor recurrence or metastases. Read More

View Article
December 2018

Hepatocyte Injury Induced by Contrast-Enhanced Diagnostic Ultrasound.

J Ultrasound Med 2018 Dec 13. Epub 2018 Dec 13.

Department of Radiology, University of Michigan Health System, Ann Arbor, Michigan, USA.

Objectives: Contrast-enhanced diagnostic ultrasound (US) has a potential to induce localized biological effects. The potential for contrast-enhanced diagnostic US bioeffects in liver were researched, with guidance from a report by Yang et al (Ultrasonics 2012; 52:1065-1071).

Methods: Contact and standoff scanning was performed for 10 minutes with a diagnostic US phased array at 1. Read More

View Article
December 2018

Is obstructive sleep apnea syndrome related to nocturia?

Low Urin Tract Symptoms 2018 Dec 12. Epub 2018 Dec 12.

Department of Urology, Istanbul Taksim Gaziosmanpasa Training and Research Hospital, Istanbul, Turkey.

Objective: The aim of this study was to investigate the relationship between obstructive sleep apnea syndrome (OSAS) and lower urinary tract symptoms (LUTS) in patients with benign prostatic hyperplasia (BPH).

Methods: This multicenter study was performed on 122 male patients with dyspnea and/or sleep disorder. Patient characteristics were recorded. Read More

View Article
December 2018
1 Read

Useful technique for draining a large cystic tumor through the round ligament in laparoscopic left hemihepatectomy.

Asian J Endosc Surg 2018 Dec 12. Epub 2018 Dec 12.

Department of Gastroenterological Surgery, Fukuyama City Hospital, Fukuyama, Japan.

Introduction: Some cystic liver tumors are huge when the diagnosis is made or surgery is needed. Although reducing tumor size by preoperative aspiration or drainage of the contents of the cystic tumor is helpful for liver resection, such procedures have a risk of tumor dissemination.

Materials And Surgical Technique: After the round ligament was dissected, a 12-Fr drainage catheter was inserted into the tumor via the round ligament under ultrasonography. Read More

View Article
December 2018

Accuracy of fine needle aspiration cytology in suspicious neck nodes after radiotherapy: retrospective analysis of 100 patients.

Clin Otolaryngol 2018 Dec 12. Epub 2018 Dec 12.

Institute of Head and Neck Diseases, Evangelical Hospital Vienna, Vienna, Austria.

Little data are available regarding the accuracy of FNAC performed without ultrasound-guidance in neck nodes after radiotherapy. Our retrospective analysis of 100 patients showed a high sensitivity (87%), specificity (83%), positive predictive value (98%) and accuracy (87%) of this method. Nodal size or lymph node necrosis had no influence on the probability to obtain a diagnostic FNAC. Read More

View Article
December 2018

Computed tomographic angiography and ultrasonography in the diagnosis and evaluation of acute pancreatitis in dogs.

J Vet Intern Med 2018 Dec 11. Epub 2018 Dec 11.

Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado.

Background: Acute pancreatitis in dogs is an under-diagnosed disease. Current diagnostic methods are insufficient at identifying sequelae and lack prognostic capability. Computed tomographic angiography (CTA) is accurate for diagnosis and prognostication of pancreatitis in humans. Read More

View Article
December 2018
1 Read

Point-of-care ultrasonography for diagnosing thoracoabdominal injuries in patients with blunt trauma.

Cochrane Database Syst Rev 2018 Dec 12;12:CD012669. Epub 2018 Dec 12.

Centre for Clinical Research, Department of Trauma and Orthopaedic Surgery, Unfallkrankenhaus Berlin, Berlin, Germany, 12683.

Background: Point-of-care sonography (POCS) has emerged as the screening modality of choice for suspected body trauma in many emergency departments worldwide. Its best known application is FAST (focused abdominal sonography for trauma). The technology is almost ubiquitously available, can be performed during resuscitation, and does not expose patients or staff to radiation. Read More

View Article
December 2018

CT texture analysis of lung adenocarcinoma: can Radiomic features be surrogate biomarkers for EGFR mutation statuses.

Cancer Imaging 2018 Dec 14;18(1):52. Epub 2018 Dec 14.

Department of Radiology, Shenzhen People's Hospital, the Second Clinical Medical College, Jinan University, Shenzhen, 518020, Guangdong, China.

Objective: To investigate whether radiomic features can be surrogate biomarkers for epidermal growth factor receptor (EGFR) mutation statuses.

Materials And Methods: Two hundred ninety six consecutive patients, who underwent CT examinations before operation within 3 months and had EGFR mutations tested, were enrolled in this retrospective study. CT texture features were extracted using an open-source software with whole volume segmentation. Read More

View Article
December 2018

Rapidly growing juvenile granulosa cell tumor of the ovary arising in adult: a case report and review of the literature.

J Ovarian Res 2018 Dec 14;11(1):100. Epub 2018 Dec 14.

Department of Radiology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan.

Background: Ovarian granulosa cell tumors (GCTs) are divided into adult GCT (AGCT) and juvenile GCT (JGCT). The AGCT is more common type, conversely, less than 5% of tumors are the JGCT and occur in mainly premenarchal girls and in women younger than 30 years. Although JGCT have different histologic features compared to AGCT, the two types have similar imaging features because they have similar gross appearance. Read More

View Article
December 2018

A rare case of intracardiac fibrosarcoma with myxoid features inducing venous occlusion in a dog - a case report.

BMC Vet Res 2018 Dec 14;14(1):398. Epub 2018 Dec 14.

Department of Pathology, University of Agricultural Sciences and Veterinary Medicine "Ion Ionescu de la Brad", Iași, Romania.

Background: In both humans and animals, cardiac fibrosarcoma is rare among primary cardiac malignant neoplasia. The overall prevalence of cardiac neoplasia in dogs is low, reported to be between 0.17% and 0. Read More

View Article
December 2018
1 Read

Prevalence and risk factors of gestational diabetes mellitus in Asia: a systematic review and meta-analysis.

BMC Pregnancy Childbirth 2018 Dec 14;18(1):494. Epub 2018 Dec 14.

Department of Pharmacy Practice, School of Pharmacy, International Medical University, 57000, Kuala Lumpur, Malaysia.

Background: Gestational diabetes mellitus (GDM) is a of the major public health issues in Asia. The present study aimed to determine the prevalence of, and risk factors for GDM in Asia via a systematic review and meta-analysis.

Methods: We systematically searched PubMed, Ovid, Scopus and ScienceDirect for observational studies in Asia from inception to August 2017. Read More

View Article
December 2018

An Analysis of Nipple Enhancement at Breast MRI with Radiologic-Pathologic Correlation.

Radiographics 2018 Dec 14:180039. Epub 2018 Dec 14.

From the Departments of Radiology (Y.G., S.L.H.) and Pathology (O.H.), New York University Langone Medical Center, 160 E 34th St, New York, NY 10016; and Department of Pathology, Massachusetts General Hospital, Boston, Mass (E.F.B.).

Breast MRI is the most sensitive imaging modality for assessment of the nipple-areola complex (NAC), which is important both in cancer staging and in high-risk screening. However, the normal appearance of the nipple at MRI is not well defined because of a paucity of scientific literature on this topic. Hence, there is a lack of descriptive terminology and diagnostic criteria, which may account for the wide variability in interpretation among radiologists when assessing the NAC on MR images. Read More

View Article
December 2018

ADAPTIVE GRADIENT DESCENT OPTIMIZATION OF INITIAL MOMENTA FOR GEODESIC SHOOTING IN DIFFEOMORPHISMS.

Proc IEEE Int Symp Biomed Imaging 2017 Apr 19;2017:868-872. Epub 2017 Jun 19.

USC, Imaging Genetics Center, 4676 Admiralty Way, 2nd floor, Marina del Rey, CA 90292.

Diffeomorphic image registration algorithms are widely used in medical imaging, and require optimization of a high-dimensional nonlinear objective function. The function being optimized has many characteristics that are relevant for optimization but are typically not well understood. Due to that complexity, most authors have used a simple gradient descent, but it is not often discussed how step sizes are chosen or if line searches are used. Read More

View Article

Nonobstructive angioscopy in patient with atherosclerotic renal artery stenosis.

J Cardiol Cases 2014 Jan 13;9(1):18-21. Epub 2013 Dec 13.

Cardiovascular Center, Amagasaki Central Hospital, 1-12-1 Shio-e, Amagasaki, Hyogo 661-0976, Japan.

Few applications of angioscopy for evaluating atherosclerosis of the abdominal aorta have been described. We report the demonstration of atherosclerotic yellow plaque by nonobstructive angioscopy in a patient with left renal artery stenosis. Computed tomography angiography showed stenosis in one of the left renal arteries in a 65-year-old man who presented with renal impairment and hypertension. Read More

View Article
January 2014

Fulminant myocarditis in a patient with severe coronary artery disease.

J Cardiol Cases 2014 Jan 12;9(1):15-17. Epub 2013 Dec 12.

Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507, Japan.

A 55-year-old man complaining of fever and exertional dyspnea was admitted for coronary angiography to differentiate between fulminant myocarditis and acute coronary syndrome. He had been treated for 17 years for angina pectoris. His electrocardiogram demonstrated ST segment changes in almost all leads. Read More

View Article
January 2014
  • Page 1 of 27298