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    8103 results match your criteria Acta Radiologica [Journal]

    1 OF 163

    Radiographic analysis of the correlation between ossification of the nuchal ligament and sagittal alignment and segmental stability of the cervical spine in patients with cervical spondylotic myelopathy.
    Acta Radiol 2018 Jan 1:284185118778866. Epub 2018 Jan 1.
    3 Department of Orthopaedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, PR China.
    Background Ossification of the nuchal ligament (ONL) caused by chronic injury to the nuchal ligament (NL) is very common in instability-related cervical disorders. Purpose To determine possible correlations between ONL, sagittal alignment, and segmental stability of the cervical spine. Material and Methods Seventy-three patients with cervical spondylotic myelopathy (CSM) and ONL (ONL group) and 118 patients with CSM only (control group) were recruited. Read More

    A new method for visualizing pulmonary artery microvasculature using synchrotron radiation pulmonary microangiography: the measurement of pulmonary arterial blood flow velocity in the high pulmonary blood flow rat model.
    Acta Radiol 2018 Jan 1:284185118770892. Epub 2018 Jan 1.
    1 Department of Cardiovascular Surgery, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan.
    Background Increased pulmonary blood flow (PBF) and shear stress may provoke irreversible vascular remodeling, yet invasive visualization of the microvasculature complicates monitoring. A non-invasive imaging methodology would therefore safely provide mechanistic insights into the progression of high PBF-induced vascular remodeling. Purpose To establish a novel microvasculature visualization method using synchrotron radiation pulmonary microangiography (SRPA) that can also calculate PBF velocity in vivo. Read More

    Automated daily quality control analysis for mammography in a multi-unit imaging center.
    Acta Radiol 2018 Jan 1:284185118776502. Epub 2018 Jan 1.
    1 Department of Physics, University of Helsinki, Helsinki, Finland.
    Background The high requirements for mammography image quality necessitate a systematic quality assurance process. Digital imaging allows automation of the image quality analysis, which can potentially improve repeatability and objectivity compared to a visual evaluation made by the users. Purpose To develop an automatic image quality analysis software for daily mammography quality control in a multi-unit imaging center. Read More

    Ultrasonographic optic nerve sheath diameter to detect increased intracranial pressure in adults: a meta-analysis.
    Acta Radiol 2018 Jan 1:284185118776501. Epub 2018 Jan 1.
    5 Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Republic of Korea.
    Background The optimal optic nerve sheath diameter (ONSD) cut-off for identifying increased intracranial pressure (IICP) remains unclear in adult patients. Purpose To validate the diagnostic accuracy of ultrasonographic (US) ONSD > 5.0 mm as a cut-off for detecting IICP by computed tomographic (CT) through a meta-analysis. Read More

    Change in microcalcifications on mammography after neoadjuvant chemotherapy in breast cancer patients: correlation with tumor response grade and comparison with lesion extent.
    Acta Radiol 2018 Jan 1:284185118776491. Epub 2018 Jan 1.
    2 Department of Radiology, Ajou University School of Medicine, Gyeonggi-do, Republic of Korea.
    Background After neoadjuvant chemotherapy (NAC), persistent microcalcifications are often observed in spite of a decrease in the primary tumor size. Purpose To analyze the changes in microcalcifications after NAC and to evaluate the accuracy of residual microcalcifications in predicting the extent of residual cancer. Material and Methods Eighty patients who received NAC and underwent both mammography and magnetic resonance imaging (MRI) before and after the completion of NAC were included. Read More

    Temporal bone contrast-enhanced high-resolution CT evaluation of pulsatile tinnitus after sigmoid sinus wall reconstruction.
    Acta Radiol 2018 Jan 1:284185118773509. Epub 2018 Jan 1.
    1 Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, PR China.
    Background Sigmoid sinus wall reconstruction (SSWR) is a proven effective treatment for pulsatile tinnitus (PT) caused by sigmoid sinus wall dehiscence (SSWD) with or without sigmoid sinus diverticulum (SSD); however, comprehensive analysis of the postoperative imaging manifestations has not yet been reported. Purpose To analyze temporal bone computed tomography (CT) imaging features following SSWR in patients with PT. Material and Methods Following SSWR, temporal bone contrast-enhanced high-resolution CT (HRCT) images from 33 PT cases were retrospectively analyzed. Read More

    Patterns of malignant non-mass enhancement on 3-T breast MRI help predict invasiveness: using the BI-RADS lexicon fifth edition.
    Acta Radiol 2018 Jan 1:284185118759139. Epub 2018 Jan 1.
    5 Department of Pathology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Gyeongnam, Republic of Korea.
    Background Non-mass enhancements (NME) with invasive components account for 10-42% of total malignant NMEs. The factors associated with invasiveness on magnetic resonance imaging (MRI) could be useful for clinical assessment and treatment. Purpose To evaluate the clinical significances of the distributions and internal enhancement patterns (IEP) of malignant NMEs on 3-T breast MRI. Read More

    Diagnostic accuracy of dual-source and 320-row computed tomography angiography in detecting coronary in-stent restenosis: a systematic review and meta-analysis.
    Acta Radiol 2018 Jan 1:284185118774956. Epub 2018 Jan 1.
    1 Department of Radiology, First Hospital of LanZhou University, Lanzhou, Gansu, PR China.
    Background Dual-source and 320-row computed tomography angiography (CTA) are increasingly used in diagnosing coronary in-stent restenosis (CISR). Purpose We sought to perform this meta-analysis to evaluate the diagnostic accuracy of dual-source computed tomography angiography (DSCTA) and 320-row CTA in detecting CISR when compared to invasive coronary angiography. Material and Methods Five scientific databases (PubMed, Embase, Scopus, The Cochrane Library, and Web of Science) were searched for research studies in which DSCTA and/or 320-row CTA were used as diagnostic tools for CISR, as recently as October 2017. Read More

    Detection of loco-regional recurrence in malignant head and neck tumors: a comparison of CT, MRI, and FDG PET-CT.
    Acta Radiol 2018 Jan 1:284185118776504. Epub 2018 Jan 1.
    2 Department of Radiology, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, Seoul, Republic of Korea.
    Background The early and accurate detection of local or regional recurrence of head and neck tumor is critically important. Purpose To compare the diagnostic accuracy of contrast-enhanced computed tomography (CT), contrast-enhanced magnetic resonance imaging (MRI), and fluorodeoxyglucose (FDG) positron emission tomography (PET)-CT, alone and in combination, in detecting the locoregional recurrence of malignant head and neck tumor. Material and Methods A total of 93 patients with loco-regional recurrence of malignant head and neck tumors underwent CT, MRI, and PET-CT within 30 days before surgery. Read More

    Evaluation of anterior intermeniscal ligament in discoid lateral meniscus cases and presenting the accompanying meniscal pathologies with MRI.
    Acta Radiol 2018 Jan 1:284185118776499. Epub 2018 Jan 1.
    Department of Radiology, Kayseri Education and Research Hospital, Kayseri, Turkey.
    Background Although several studies were conducted to put forth the biomechanical function of anterior intermeniscal ligament (AIML) on the stability of meniscal structures, there are few data on the etiology of the early degeneration of discoid type compared to the normal shaped ones. Purpose To determine the AIML subtypes and accompanying meniscal pathologies in discoid lateral menisci (DLM) on knee MRI exams. Material and Methods Knee MRI exams of 171 individuals with DLM were reviewed. Read More

    Diagnostic accuracy of simplified ultrasound hand examination protocols for detection of inflammation and disease burden in patients with rheumatoid arthritis.
    Acta Radiol 2018 Jan 1:284185118773507. Epub 2018 Jan 1.
    2 Department of Rheumatology, University College London Hospitals NHS Foundation Trust, London, UK.
    Background There is no consensus regarding the minimum number of joints that should be included in an ultrasound (US) scoring system to reliably assess for disease activity in rheumatoid arthritis (RA). Purpose To assess whether simplified US protocols for hand examination are as informative as the examination of 22 joints in patients with RA, and to correlate the US parameters with disease activity (DAS-28). Material and Methods This is a cross-sectional study of 224 RA patients stratified based on their DAS-28 scores and assessed using eight preselected US examination protocols, including 22, 18, 16, 14, ten, eight, and two different combinations of four joints, respectively. Read More

    Long-term prognostic value of coronary computed tomography angiography in chest pain patients.
    Acta Radiol 2018 Jan 1:284185118773551. Epub 2018 Jan 1.
    4 Department of Cardiology and Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.
    Background Coronary computed tomography angiography (CCTA) is increasingly used to detect coronary artery disease (CAD), but long-term follow-up studies are still scarce. Purpose To evaluate the prognostic value of CCTA in patients with suspected CAD. Material and Methods A total of 1205 consecutive CCTA patients with chest pain were classified as normal coronary arteries, non-obstructive CAD, or obstructive CAD. Read More

    Benign and malignant skull-involved lesions: discriminative value of conventional CT and MRI combined with diffusion-weighted MRI.
    Acta Radiol 2018 Jan 1:284185118773541. Epub 2018 Jan 1.
    Department of Radiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, PR China.
    Background Little is known about the value of computed tomography (CT) and magnetic resonance imaging (MRI) combined with diffusion-weighted imaging (DWI) in distinguishing malignant from benign skull-involved lesions. Purpose To evaluate the discriminative value of DWI combined with conventional CT and MRI for differentiating between benign and malignant skull-involved lesions. Material and Methods CT and MRI findings of 58 patients with pathologically proven skull-involved lesions (43 benign and 15 malignant) were retrospectively reviewed. Read More

    Factors associated with the size of the adhesio interthalamica based on 3.0-T magnetic resonance images.
    Acta Radiol 2018 Jan 1:284185118774952. Epub 2018 Jan 1.
    3 Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
    Background Adhesio interthalamica (AI) is a small structure connecting bilateral thalami. Purpose To evaluate the effects of patient age, sex, and lateral diameter of the third ventricle on the long diameter of the AI using multivariate analyses based on magnetic resonance (MR) images obtained with 3.0-T scanners. Read More

    Can unenhanced MRI of the breast replace contrast-enhanced MRI in assessing response to neoadjuvant chemotherapy?
    Acta Radiol 2018 Jan 1:284185118773512. Epub 2018 Jan 1.
    1 Department of Radiological, Oncological and Pathological Sciences, Policlinico Umberto I, Sapienza University of Rome, Rome, Italy.
    Background The goals of neoadjuvant chemotherapy (NAC) are to reduce tumor volume and to offer a prognostic indicator in assessing treatment response. Contrast-enhanced magnetic resonance imaging (CE-MRI) is an established method for evaluating response to NAC in patients with breast cancer. Purpose To validate the role of unenhanced MRI (ue-MRI) compared to CE-MRI for assessing response to NAC in women with breast cancer. Read More

    Diagnostic value of MRI signs in differentiating Ewing sarcoma from osteomyelitis.
    Acta Radiol 2018 Jan 1:284185118774953. Epub 2018 Jan 1.
    1 Department of Radiology, Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
    Background The value of magnetic resonance imaging (MRI) signs in differentiating Ewing sarcoma from osteomyelitis has not be thoroughly investigated. Purpose To investigate the value of various MRI signs in differentiating Ewing sarcoma from osteomyelitis. Material and Methods Forty-one patients who underwent MRI because of a bone lesion of unknown nature with a differential diagnosis that included both Ewing sarcoma and osteomyelitis were included. Read More

    Dependence of intravoxel incoherent motion diffusion MR threshold b-value selection for separating perfusion and diffusion compartments and liver fibrosis diagnostic performance.
    Acta Radiol 2018 Jan 1:284185118774913. Epub 2018 Jan 1.
    5 Shenzhen Center for Chronic Disease Control, Shenzhen, Guangdong Province, PR China.
    Background Intravoxel incoherent motion (IVIM) tissue parameters depend on the threshold b-value. Purpose To explore how threshold b-value impacts PF ( f), D ( D), and D ( D*) values and their performance for liver fibrosis detection. Material and Methods Fifteen healthy volunteers and 33 hepatitis B patients were included. Read More

    Comparison of the SR, SR, and color map of strain-elastography in differentiating malignant from benign breast lesions.
    Acta Radiol 2018 Jan 1:284185118773510. Epub 2018 Jan 1.
    1 Department of Radiology, 65521 Hallym University Kangnam Sacred Heart Hospital , Seoul, Republic of Korea.
    Background The maximum value of the strain ratio (SR) is a newly developed measure in strain-elastography. Purpose To prospectively compare the diagnostic performance of three different measures of strain-elastography, the maximum value of the SR (SR), the average value of the SR (SR), and the color map, for differentiating benign and malignant breast lesions. Material and Methods We obtained the SR and SR of 314 lesions from 290 patients with the tissue to nodule SR and color map using a five-degree scoring system. Read More

    New Doppler imaging technique for assessing angiogenesis in breast tumors: correlation with immunohistochemically analyzed microvessels density.
    Acta Radiol 2018 Jan 1:284185118769690. Epub 2018 Jan 1.
    2 Department of Radiology, 37129 CHA Bundang Medical Center , CHA University, Seongnam-si, Republic of Korea.
    Background Microvessel density (MVD) is associated with grade and prognosis in breast tumors. However, conventional color Doppler flow (CDF) imaging has been limited to represent MVD of breast tumors. Purpose To evaluate whether a new Doppler imaging technique (AngioPLUS) can represent MVD of breast tumors. Read More

    The ability of ADC measurements in the assessment of patients with stage I endometrial carcinoma based on three risk categories.
    Acta Radiol 2018 Jan 1:284185118768105. Epub 2018 Jan 1.
    Department of Radiology, 92276 Obstetrics and Gynecology Hospital, Fudan University , Shanghai, PR China.
    Background Better selection of patients with intermediate and high-risk stage I endometrial carcinoma (EC) for lymphadenectomy has an important effect on the prognosis. Purpose To investigate the role of apparent diffusion coefficient (ADC) measurements in the assessment of stage I EC patients based on three risk categories. Material and Methods We retrospectively studied 80 patients with EC and 28 cervical cancer patients with normal endometrium. Read More

    Motion artifacts, lesion type, and parenchymal enhancement in breast MRI: what does really influence diagnostic accuracy?
    Acta Radiol 2018 Jan 1:284185118770918. Epub 2018 Jan 1.
    1 Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.
    Background Motion artifacts can reduce image quality of breast magnetic resonance imaging (MRI). There is a lack of data regarding their effect on diagnostic estimates. Purpose To evaluate factors that potentially influence readers' diagnostic estimates in breast MRI: motion artifacts; amount of fibroglandular tissue; background parenchymal enhancement; lesion size; and lesion type. Read More

    Transarterial embolization for postpartum hemorrhage: lessons learned.
    Acta Radiol 2018 Jan 1:284185118769691. Epub 2018 Jan 1.
    1 Division of Emergency and Critical Care Radiology, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Chang Gung University, Taiwan.
    Background Although transarterial embolization (TAE) can powerfully control postpartum hemorrhage (PPH), clinical failure of TAE is not uncommon. Purpose To discover whether any parameters could predict timely clinical failure of TAE, then whether a supplementary intervention could be promptly initiated. Material and Methods We retrospectively analyzed 118 TAE procedures in 113 patients with PPH performed at our institution between January 2012 and May 2015. Read More

    Significance of incidental intra-articular and peri-articular FDG avid foci on PET/CT.
    Acta Radiol 2018 Jan 1:284185118770901. Epub 2018 Jan 1.
    4 Department of Radiology - MSK and Sports Medicine Division, Miller School of Medicine, University of Miami, Miami, FL, USA.
    Background Positron emission tomography/computed tomography (PET/CT) is a useful imaging adjunct in patients with sarcoma. Intra-articular and peri-articular 18F-fluoro-2-deoxy-D-glucose (FDG) avid lesions are often discovered incidentally. Purpose To describe the etiology, appearance, and standardized uptake values (SUV) of incidentally detected FDG avid intra-articular and peri-articular foci in patients with sarcoma. Read More

    Potential occupational exposures in diagnostic and interventional radiology: statistical modeling based on Finnish national dose registry data.
    Acta Radiol 2018 Jan 1:284185118770902. Epub 2018 Jan 1.
    1 HUS Medical Imaging Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
    Background Radiation worker categorization and exposure monitoring practices must be proportional to the current working environment. Purpose To analyze exposure data of Finnish radiological workers and to estimate the magnitude and frequency of their potential occupational radiation exposure, and to propose appropriate radiation worker categorization. Material and Methods Estimates of the probabilities of annual effective doses exceeding certain levels were obtained by calculating the survival function of a lognormal probability density function (PDF) fitted in the measured occupational exposure data. Read More

    Cho/Cr ratio at MR spectroscopy as a biomarker for cellular proliferation activity and prognosis in glioma: correlation with the expression of minichromosome maintenance protein 2.
    Acta Radiol 2018 Jan 1:284185118770899. Epub 2018 Jan 1.
    1 Department of Radiology, 91623 Qilu Hospital of Shandong University , Jinan, Shandong Province, PR China.
    Background Magnetic resonance (MR) spectroscopy (H-MRS) has been demonstrated to be useful in grading glioma, but the utility in assessing cellular proliferation activity and prognosis correlated with the expression of minichromosome maintenance protein 2 (MCM2) has not been reported. Purpose To explore the correlation between proton MR spectroscopy parameters (including choline [Cho]/creatine [Cr], N-acetyl aspartate [NAA]/Cr, and Cho/NAA ratios) and the expression of MCM2 and to further evaluate whether H-MRS can predict cell proliferative activity and provide prognostic information in high-grade gliomas (HGGs). Material and Methods Forty-three patients with histopathologically confirmed gliomas were involved in this study. Read More

    Relationship between kurtosis and bi-exponential characterization of high b-value diffusion-weighted imaging: application to prostate cancer.
    Acta Radiol 2018 Jan 1:284185118770889. Epub 2018 Jan 1.
    2 Department of Radiology, 12220 University of California San Diego , La Jolla, CA, USA.
    Background High b-value diffusion-weighted imaging has application in the detection of cancerous tissue across multiple body sites. Diffusional kurtosis and bi-exponential modeling are two popular model-based techniques, whose performance in relation to each other has yet to be fully explored. Purpose To determine the relationship between excess kurtosis and signal fractions derived from bi-exponential modeling in the detection of suspicious prostate lesions. Read More

    The efficacy of using computer-aided detection (CAD) for detection of breast cancer in mammography screening: a systematic review.
    Acta Radiol 2018 Jan 1:284185118770917. Epub 2018 Jan 1.
    1 Department of Diagnostic Radiology, 53146 Rigshospitalet , Copenhagen University Hospital, Copenhagen, Denmark.
    Background Early detection of breast cancer (BC) is crucial in lowering the mortality. Purpose To present an overview of studies concerning computer-aided detection (CAD) in screening mammography for early detection of BC and compare diagnostic accuracy and recall rates (RR) of single reading (SR) with SR + CAD and double reading (DR) with SR + CAD. Material and Methods PRISMA guidelines were used as a review protocol. Read More

    Topogram-based tube current modulation of head computed tomography for optimizing image quality while protecting the eye lens with shielding.
    Acta Radiol 2018 Jan 1:284185118770894. Epub 2018 Jan 1.
    1 Department of Radiology, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
    Background Multiple rounds of head computed tomography (CT) scans increase the risk of radiation-induced lens opacification. Purpose To investigate the effects of CT eye shielding and topogram-based tube current modulation (TCM) on the radiation dose received by the lens and the image quality of nasal and periorbital imaging. Material and Methods An anthropomorphic phantom was CT-scanned using either automatic tube current modulation or a fixed tube current. Read More

    Low-dose CT of postoperative pelvic fractures: a comparison with radiography.
    Acta Radiol 2018 Jan 1:284185118770919. Epub 2018 Jan 1.
    1 Department of Radiology, Uppsala University Hospital, Uppsala, Sweden.
    Background Computed tomography (CT) is superior to conventional radiography (CR) for assessing internal fixation of pelvic fractures, but with a higher radiation exposure. Low-dose CT (LDCT) could possibly have a sufficient diagnostic accuracy but with a lower radiation dose. Purpose To compare postoperative diagnostic accuracy of LDCT and CR after open reduction and internal fixation of pelvic fracture. Read More

    Long-term outcome of stenting for atherosclerotic renal artery stenosis and the effect of angiographic restenosis.
    Acta Radiol 2018 Jan 1:284185118764209. Epub 2018 Jan 1.
    1 Department of Radiology, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
    Background Symptomatic renal artery stenosis (RAS) is mainly treated with pharmacological blood pressure control, sometimes with percutaneous transluminal renal angioplasty (PTRA). It is unclear if PTRA benefits these patients over time. Purpose To determine long-term renal function, morbidity, and mortality in patients with symptomatic RAS treated with PTRA, and whether long-term outcomes are associated with angiographic restenosis. Read More

    Effects of bismuth breast shielding on iodine quantification in dual-energy computed tomography: an experimental phantom study.
    Acta Radiol 2018 Jan 1:284185118768098. Epub 2018 Jan 1.
    Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University, College of Medicine, Seoul, Republic of Korea.
    Background Although the bismuth breast shield can reduce radiation exposure to the breast during dual-energy computed tomography (DECT), it can potentially affect material quantification on DECT due to artifacts. Purpose To evaluate the effects of bismuth breast shielding on iodine quantification and radiation exposure in DECT. Material and Methods Small balloons were made with 0. Read More

    Thoracic-abdominal imaging with a novel dual-layer spectral detector CT: intra-individual comparison of image quality and radiation dose with 128-row single-energy acquisition.
    Acta Radiol 2018 Jan 1:284185118762611. Epub 2018 Jan 1.
    1 Institute of Diagnostic and Interventional Radiology, University Hospital of Cologne, Cologne, Germany.
    Background A novel, multi-energy, dual-layer spectral detector computed tomography (SDCT) is commercially available now with the vendor's claim that it yields the same or better quality of polychromatic, conventional CT images like modern single-energy CT scanners without any radiation dose penalty. Purpose To intra-individually compare the quality of conventional polychromatic CT images acquired with a dual-layer spectral detector (SDCT) and the latest generation 128-row single-energy-detector (CT128) from the same manufacturer. Material and Methods Fifty patients underwent portal-venous phase, thoracic-abdominal CT scans with the SDCT and prior CT128 imaging. Read More

    In vivo MRI detection of atherosclerosis in ApoE-deficient mice by using tenascin-C-targeted USPIO.
    Acta Radiol 2018 Jan 1:284185118762613. Epub 2018 Jan 1.
    Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, PR China.
    Background Atherosclerosis is the main cause of cardiovascular and cerebrovascular diseases. Non-invasive molecular imaging to detect and characterize the plaques is essential for reducing life-threatening cardiovascular events. Purpose To investigate the possibility of the anti-tenascin-C-USPIO specific probe as a molecular marker of atherosclerotic plaques detected by 7. Read More

    Ga-somatostatin receptor analogs and F-FDG PET/CT in the localization of metastatic pheochromocytomas and paragangliomas with germline mutations: a meta-analysis.
    Acta Radiol 2018 Jan 1:284185118764206. Epub 2018 Jan 1.
    2 Department of Radiology, Beijing Friendship Hospital, 26455 Capital Medical University , Beijing, PR China.
    Background Metastatic pheochromocytoma and paraganglioma (PCs/PGLs) show high germline mutation, and F-FDG and Ga-DOTA peptide positron emission tomography/computed tomography (PET/CT) imaging are recommended for the diagnosis of metastatic of PCs. However, there has been lack of direct comparison of the two modalities in the diagnosis of metastatic of PCs up to now. Purpose To evaluate and compare the value of localization of Ga-somatostatin receptor analogs and F-FDG in the diagnosis of metastatic PCs/PGLs. Read More

    Mid-term development of the right ventricle in competitive athletes.
    Acta Radiol 2018 Jan 1:284185118764203. Epub 2018 Jan 1.
    2 Department of Internal Medicine V, Sports Medicine, Eberhard Karls University of Tübingen, Tübingen, Germany.
    Background Long-term intensive training induces physiological, morphological, and functional adaption of the athlete's heart. Purpose To evaluate the development of athlete's heart during a mid-term follow-up of competitive athletes using cardiac magnetic resonance (CMR). Material and Methods Eighteen competitive long-distance runners and triathletes (age 43 ± 13 years, 3 women) were prospectively examined in a longitudinal follow-up study 5. Read More

    The role of ARFI elastography to evaluate microstructrual changes of patients with testicular microlithiasis.
    Acta Radiol 2018 Jan 1:284185118764213. Epub 2018 Jan 1.
    1 Department of Radiology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey.
    Background Testicular microlithiasis (TML) is thought to cause microstructural changes in the parenchyma of the testis, but it is difficult to demonstrate this by ultrasonography. It may be possible to evaluate microstructural changes in the testis by Acoustic Radiation Force Impulse (ARFI) elastography, which measures tissue stiffness. Purpose To assess the tissue stiffness of testicles of children with TML and to compare them with the healthy control group. Read More

    The retroneural approach: an alternative technique for lumbar transforaminal epidural steroid injections.
    Acta Radiol 2018 Jan 1:284185118762248. Epub 2018 Jan 1.
    Institute of Radiology, Kantonsspital Baden AG, Baden, Switzerland.
    Background Compared with other available injection techniques for lumbar transforaminal epidural steroid injections (LTFESIs), the traditionally performed subpedicular approach is associated with a higher risk of spinal cord infarction, a rare but catastrophic complication. Purpose To assess the short-term efficacy of the retroneural approach for computed tomography (CT)-guided LTFESIs with respect to different needle-tip positions. Material and Methods This retrospective analysis included 238 patients receiving 286 CT-guided LTFESIs from January 2013 to January 2016. Read More

    Usefulness of ultrasound assessment of median nerve mobility in carpal tunnel syndrome.
    Acta Radiol 2018 Jan 1:284185118762246. Epub 2018 Jan 1.
    1 Department of Rehabilitation Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea.
    Background Carpal tunnel syndrome (CTS) is the most common peripheral compression neuropathy of the upper extremity. Recently, dynamic ultrasound (US) imaging has shown differences in median nerve mobility between the affected and unaffected sides in CTS. Purpose The present study was performed to compare the median nerve mobility between patients with CTS and healthy individuals, and to correlate median nerve mobility with the severity of CTS. Read More

    Initial clinical results with a fusion prototype for mammography and three-dimensional ultrasound with a standard mammography system and a standard ultrasound probe.
    Acta Radiol 2018 Jan 1:284185118762249. Epub 2018 Jan 1.
    1 Department of Gynecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg, Erlangen, Germany.
    Background Combinations *Equal contributors. of different imaging techniques in fusion devices appear to be associated with improvements in diagnostic assessment. Purpose The aim of this study was to test the feasibility of using an automated standard three-dimensional (3D) ultrasound (US) device fused with standard mammography for the first time in breast cancer patients. Read More

    Imaging of symptomatic total knee arthroplasty with cone beam computed tomography.
    Acta Radiol 2018 Jan 1:284185118762247. Epub 2018 Jan 1.
    4 Department of Orthopaedics, Traumatology and Hand Surgery, Kuopio University Hospital, University of Eastern Finland, Kuopio, Finland.
    Background Computed tomography (CT) can be used to assess the rotational alignment of prosthesis components to identify possible underlying causes of symptomatic total knee arthroplasty (TKA). The use of cone beam computed tomography (CBCT) for the imaging of extremities is relatively new, although it has been widely used in dental imaging. Purpose To assess the intra- and inter-observer reproducibility of CBCT, as well as to validate CBCT for TKA component and periprosthetic bone diagnostics. Read More

    Radiation exposure during TACE procedures using additional cone-beam CT (CBCT) for guidance: safety and precautions.
    Acta Radiol 2018 Jan 1:284185118761203. Epub 2018 Jan 1.
    1 Department of Radiology, Charité University Medicine Berlin, Berlin, Germany.
    Background During transarterial chemoembolization (TACE), cone-beam computed tomography (CBCT) can be used for tumor and feeding vessel detection as well as postembolization CT imaging. However, there will be additional radiation exposure from CBCT. Purpose To evaluate the additional dose raised through CBCT-assisted guidance in comparison to TACE procedures guided with pulsed digital subtraction angiography (DSA) alone. Read More

    Chest pain CT in the Emergency Department: evaluating the coronary arteries even when not specifically asked for?
    Acta Radiol 2018 Jan 1:284185118758121. Epub 2018 Jan 1.
    1 Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, Zurich, Switzerland.
    Background Computed tomography (CT) for excluding acute aortic syndrome (AAS) and pulmonary embolism (PE) simultaneously in patients with chest pain could be used to exclude coronary artery disease (CAD). Purpose To evaluate the frequency of further testing for CAD in patients receiving a CT in the emergency department (ED) for simultaneous evaluation for AAS and PE. Material and Methods This retrospective study was conducted over a three-year period including all patients with acute chest pain visiting our ED. Read More

    A new imaging technology to reduce the radiation dose during uterine fibroid embolization.
    Acta Radiol 2018 Jan 1:284185118760064. Epub 2018 Jan 1.
    6 Department of Radiology, Section of Interventional Radiology, University Hospitals Leuven, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium.
    Background Uterine fibroid embolization (UFE) is a minimally invasive imaging-guided treatment using radiation exposure. Purpose To compare the patients' radiation exposure during UFE before and after introduction of a new X-ray imaging platform. Material and Methods Forty-one patients were enrolled in a prospective, comparative two-arm project before and after introduction of a new X-ray imaging platform with reduced dose settings, i. Read More

    Physiological uptake of 18F-FDG in the vertebral bone marrow in healthy adults on PET/CT imaging.
    Acta Radiol 2018 Jan 1:284185118762245. Epub 2018 Jan 1.
    1 Department of Nuclear Medicine, West China Hospital of Sichuan University, Chengdu, Sichuan, PR China.
    Background 18F-fluorodeoxyglucose *Equal contributors. positron emission tomography/computed tomography (18F-FDG PET/CT) has proven to be a valuable imaging modality for the assessment of bone marrow condition. Purpose To investigate the physiological uptake of 18F-FDG in the vertebral bone marrow in healthy adults on PET/CT imaging, and correlate the appearance with clinical factors including gender, body mass index, and age. Read More

    A comparative study of Gaussian and non-Gaussian diffusion models for differential diagnosis of prostate cancer with in-bore transrectal MR-guided biopsy as a pathological reference.
    Acta Radiol 2018 Jan 1:284185118760961. Epub 2018 Jan 1.
    2 Department of Urology, Beijing Hospital, National Center of Gerontology, Beijing, PR China.
    Background Although several studies have been reported on evaluating the performance of Gaussian and different non-Gaussian diffusion models on prostate cancer, few studies have been reported on the comparison of different models on differential diagnosis for prostate cancer. Purpose To compare the utility of various metrics derived from monoexponential model (MEM), biexponential model (BEM), stretched-exponential model (SEM) based diffusion-weighted imaging (DWI) and diffusion kurtosis imaging (DKI) in the differential diagnosis of prostate cancer. Material and Methods Thirty-three patients underwent magnetic resonance imaging (MRI) examination. Read More

    Degenerative changes of the thoracic spine do exist in patients with diffuse idiopathic skeletal hyperostosis: a detailed thoracic spine CT analysis.
    Acta Radiol 2018 Jan 1:284185118761205. Epub 2018 Jan 1.
    1 Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Affiliated with the Sackler School of Medicine, Tel Aviv University, Israel.
    Background Degenerative intervertebral disease (DID) is an exclusion criterion in the Resnick and Niwayama radiographic classification for diffuse idiopathic skeletal hyperostosis (DISH). However, although DID was previously described in DISH, no systematic computed tomography (CT) analysis has been reported so far. Purpose To assess for the presence and prevalence of such changes on CT examinations of the thoracic spine of individuals with DISH. Read More

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