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European Journal of Radiology

Christoph Schabel, Marius Horger, Sara Kum, Katja Weisel, Jan Fritz, Sorin D Ioanoviciu, Georg Bier
No abstract text is available yet for this article.
May 2, 2018: European Journal of Radiology
Marcos Rosa Júnior, Isabella Vargas Baldon, André Felipe Candeas Amorim, Ana Paula Alves Fonseca, Richard Volpato, Rafael B Lourenço, Rodrigo Melo Baptista, Ricardo Andrade Fernandes de Mello, Paulo Peçanha, Aloísio Falqueto
Paracoccidioidomycosis is an infectious disease characterized primarily by pulmonary involvement and potential dissemination to other organs, mainly mucosa and skin; however, it can affect any organ in the body. Although difficult to diagnose purely based on imaging, imaging is important for diagnosis, follow-up, and assessment of disease-related complications. We provide a comprehensive review of the most notable imaging findings of paracoccidioidomycosis.
March 31, 2018: European Journal of Radiology
Gisella Gennaro
A reader study, i.e. a diagnostic accuracy study aiming to assess clinical performance of one technology versus another, on the basis of image interpretation by a group of human readers, requires an accurate design, with the precise definition of each element concurring to the study itself. In this paper, the main issues to take into consideration when designing reader studies are described, and the characteristics of a number of indices of diagnostic accuracy are summarized. Special care is given to the description of the multiple sources of bias, which should be controlled in order to assure study soundness and allow consistent conclusions...
March 7, 2018: European Journal of Radiology
Jung Hun Lee, Youe Ree Kim, Guy Mok Lee, Jong Hyun Ryu, Eun Young Cho, Young Hwan Lee, Kwon-Ha Yoon
PURPOSE: To study whether the measurement of hepatic fibrosis on gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA) magnetic resonance (MR) imaging using the coefficient of variation (CV) might be correlated with the presence of hepatocellular carcinoma (HCC) in patients with chronic hepatitis B (CHB). MATERIALS AND METHODS: This study included 104 patients with and without CHB, who were divided into 4 groups: control group, CHB without liver cirrhosis (LC; Group I), CHB with LC (Group II), and CHB with LC and HCC (Group III)...
May 2018: European Journal of Radiology
Daniel L R Kuetting, Andreas Feisst, Darius Dabir, Julian Luetkens, Rami Homsi, Daniel Thomas, Hans H Schild, Alois M Sprinkart
OBJECTIVES: The aim of this study was to investigate whether a flip angle adaptation, which is known to improve SNR and CNR in post contrast SSFP imaging, improves the precision and reproducibility of Feature Tracking (FT) derived strain assessments in post contrast bSSFP imaging. METHODS AND RESULTS: At 1.5T balanced SSFP midventricular short axis cine images were acquired with various flip angles (FA) before (FA = 50°) and 5 min after (FAs = 50°, 80°, 90°, 100°) injection of double dose Gadobutrol...
May 2018: European Journal of Radiology
Wanlin Peng, Zhenlin Li, Huayan Xu, Chunchao Xia, Yingkun Guo, Jinge Zhang, Keling Liu, Yuming Li, Jin Pu, Huapeng Zhang, Tianlei Cui
PURPOSE: To assess right ventricular (RV) dysfunction in end-stage renal disease (ESRD) patients on maintenance haemodialysis (HD) by cardiac magnetic resonance (CMR) imaging and determined the risk factors associated with RV dysfunction. MATERIALS AND METHODS: Fifty ESRD patients on maintenance HD and 16 age- and gender-matched healthy individuals were prospectively enrolled and underwent CMR imaging. Left ventricular (LV) and RV function parameters, including end-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV) and ejection fraction (EF), were measured and compared...
May 2018: European Journal of Radiology
Andreas P Sauter, Felix K Kopp, Daniela Münzel, Julia Dangelmaier, Martin Renz, Bernhard Renger, Rickmer Braren, Alexander A Fingerle, Ernst J Rummeny, Peter B Noël
PURPOSE: Evaluation of the influence of iterative reconstruction, tube settings and patient habitus on the accuracy of iodine quantification with dual-layer spectral CT (DL-CT). MATERIAL AND METHODS: A CT abdomen phantom with different extension rings and four iodine inserts (1, 2, 5 and 10 mg/ml) was scanned on a DL-CT. The phantom was scanned with tube-voltages of 120 and 140 kVp and CTDIvol of 2.5, 5, 10 and 20 mGy. Reconstructions were performed for eight levels of iterative reconstruction (i0-i7)...
May 2018: European Journal of Radiology
B Henninger, E Raithel, C Kranewitter, M Steurer, W Jaschke, C Kremser
PURPOSE: To prospectively evaluate a prototypical 3D turbo-spin-echo proton-density-weighted sequence with compressed sensing and free-stop scan mode for preventing motion artefacts (3D-PD-CS-SPACE free-stop) for knee imaging in a clinical setting. METHODS AND MATERIALS: 80 patients underwent 3T magnetic resonance imaging (MRI) of the knee with our 2D routine protocol and with 3D-PD-CS-SPACE free-stop. In case of a scan-stop caused by motion (images are calculated nevertheless) the sequence was repeated without free-stop mode...
May 2018: European Journal of Radiology
Chang Rae Kim, Ji Young Jeon
OBJECTIVE: The purpose of this article is to compare radiation doses and conspicuity of anatomic landmarks of the temporal bone between the CT technique using spectral beam shaping at 150 kVp with a dedicated tin filter (150 kVp-Sn) and the conventional protocol at 120 kVp. METHODS: 25 patients (mean age, 46.8 ± 21.2 years) were examined using the 150-kVp Sn protocol (200 reference mAs using automated tube current modulation, 64 × 0.6 mm collimation, 0...
May 2018: European Journal of Radiology
Bettina Baeßler, Manoj Mannil, David Maintz, Hatem Alkadhi, Robert Manka
PURPOSE: To test in a first proof-of-concept study whether texture analysis (TA) allows for the detection of myocardial tissue alterations in hypertrophic cardiomyopathy (HCM) on non-contrast T1-weighted cardiac magnetic resonance (CMR) images using machine learning based approaches. METHODS: This retrospective, IRB-approved study included 32 patients with known HCM. Thirty patients with normal CMR served as controls. Regions-of-interest for TA encompassing the left ventricle were drawn on short-axis non-contrast T1-weighted images using a freely available software package...
May 2018: European Journal of Radiology
Sarah Keller, Avneesh Chhabra, Shaheen Ahmed, Anne C Kim, Jonathan M Chia, Jin Yamamura, Zhiyue J Wang
OBJECTIVE: Quantitative diffusion tensor imaging (DTI) of skeletal muscles is challenging due to the bias in DTI metrics, such as fractional anisotropy (FA) and mean diffusivity (MD), related to insufficient signal-to-noise ratio (SNR). This study compares the bias of DTI metrics in skeletal muscles via pixel-based and region-of-interest (ROI)-based analysis. METHODS: DTI of the thigh muscles was conducted on a 3.0-T system in N = 11 volunteers using a fat-suppressed single-shot spin-echo echo planar imaging (SS SE-EPI) sequence with eight repetitions (number of signal averages (NSA) = 4 or 8 for each repeat)...
May 2018: European Journal of Radiology
Fides Schwartz, Bram Stieltjes, Zsolt Szucs-Farkas, André Euler
OBJECTIVES: Compare incidence of over-scanning in chest CT among six hospitals and impact on effective and organ effective radiation dose. METHODS: Scout images of 600 chest CTs from six hospitals (A-F) were retrospectively reviewed using a radiation dose tracking software (RTS). Optimal scan range was determined and compared to the actual scan range. Incidence of cranial and caudal over-scanning was assessed and changes in total and organ effective dose were calculated...
May 2018: European Journal of Radiology
A Crombé, F Le Loarer, N Alberti, X Buy, E Stoeckle, S Cousin, M Toulmonde, J M Coindre, A Italiano, M Kind
OBJECTIVES: Myxoid liposarcoma (M-LPS) is the second most frequent subtype of liposarcoma. Foci of fat on MRI are strongly suggestive of this diagnosis. The aims of this study are to (i) assess the prevalence of perfectly homogeneous M-LPS-mimicking cyst and characterize their associated clinical and pathological features and to (ii) identify helpful clues to prevent misdiagnosis when encountered with a cyst-like lesion in soft tissue parts. METHODS: MR images from 32 consecutive pathologically proven M-LPS and round cell liposarcomas (RC-LPS) were retrospectively reviewed independently by two radiologists at our institution...
May 2018: European Journal of Radiology
E Charlotte van Gulik, Robert Hemke, Mendy M Welsink-Karssies, Dieneke Schonenberg-Meinema, Koert M Dolman, Anouk M Barendregt, Charlotte M Nusman, Mario Maas, Taco W Kuijpers, J Merlijn van den Berg
OBJECTIVE: In a number of patients with clinically active juvenile idiopathic arthritis (JIA), contrast-enhanced MRI shows no signs of synovitis. The objective of this study was to assess the frequency and the patient characteristics in clinically active JIA patients in which MRI showed no signs of synovitis. METHODS: From our cohort of 313 patients in which contrast-enhanced MRI of the knee had been performed, we selected 72 JIA patients with clinically active disease involving the target joint...
May 2018: European Journal of Radiology
Ke Shi, Hong-Ling Gao, Zhi-Gang Yang, Hui-Jie Feng, Xi Liu, Ying-Kun Guo
PURPOSE: As an extremely rare abnormity, type IIA pulmonary artery sling (PAS) tracheobronchial anomalies should be differentiated from normal airway for therapeutic decision-making. This study aimed to investigate the quantitative characteristics of type IIA PAS tracheobronchial anomalies using dual-source computed tomography (DSCT). MATERIALS AND METHODS: From January 2009 to December 2016, there were 11 type IIA PAS patients enrolled for analysis and compared with 32 controls...
May 2018: European Journal of Radiology
Simone Corgiolu, Luigi Barberini, Jasjit S Suri, Antonella Mandas, Diego Costaggiu, Paola Piano, Fulvio Zaccagna, Pierleone Lucatelli, Antonella Balestrieri, Luca Saba
BACKGROUND AND PURPOSE: Hepatitis C virus (HCV) co-infection's role on cognitive impairment of human immunodeficiency virus (HIV) positive patients is still debated and functional neuroimaging evaluation on this matter is lacking. To provide further insight about HCV's neuro-effects on HIV associated neurocognitive disorder (HAND), we performed a pilot resting state (RS) functional connectivity magnetic resonance imaging (fcMRI) study to find eventual functional connectivity alteration that could reflect HCV related cognitive performance degradation...
May 2018: European Journal of Radiology
Huiying Kang, Miao Zhang, Minhui Ouyang, Ruolan Guo, Qinlin Yu, Qinmu Peng, Ningning Zhang, Yonghong Zhang, Yanlong Duan, Xiaolu Tang, Virendra Mishra, Fang Fang, Wei Li, Hao Huang, Yun Peng
OBJECTIVES: To investigate white matter (WM) microstructural alterations in type I Gaucher disease (type I GD) pediatric patients and explore the correlation between the disease duration and WM changes. METHODS: Twenty-two GD patients and twenty-two sex- and age-matched typical development (TD) children were recruited. Changes in WM were investigated using diffusion tensor imaging (DTI) and applying atlas-based tract analysis. For all DTI measurements, independent-samples t-test was applied to report significant differences between type I GD and TD...
May 2018: European Journal of Radiology
Marcin Czarniecki, Iztok Caglic, James T Grist, Andrew B Gill, Kamil Lorenc, Rhys A Slough, Andrew N Priest, Tristan Barrett
OBJECTIVE: To compare image quality, artefact, and distortion in standard echo-planar imaging (EPI) with periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) for prostate magnetic resonance imaging (MRI) diffusion-weighted imaging (DWI) in patients with previous total hip replacement (THR). METHODS: 21 male subjects with a clinical suspicion for, or known prostate cancer and previous THR were scanned at 1.5 T using a phased-array body coil...
May 2018: European Journal of Radiology
K D Liao, Y H Yu, Y G Li, L Chen, C Peng, P Liu, C L Chen, R Y Chen, M Zhong, Y Wang
OBJECTIVE: To describe three-dimensional (3D) magnetic resonance imaging (MRI) pelvimetry methods and to establish the pelvimetric reference in a large population of Chinese females at term pregnancy. METHODS: Three-hundred one pregnant women at term who underwent MRI were included. Three-dimensional pelvic models were reconstructed using Mimics. 10.0 software based on MRI data sets, and measurements of these models were made. Pelvimetric results according to delivery modality were presented...
May 2018: European Journal of Radiology
Subhendra N Sarkar, David B Hackney, Robert L Greenman, Behroze A Vachha, Emelia A Johnson, Sue Nagle, Gul Moonis
OBJECTIVE: FSE sequences play key roles in neck MRI despite the susceptibility issues in neck region. Iterative decomposition of asymmetric echoes (IDEAL, GE) is a promising method that separates fat and water images resulting in high SNR and improved fat suppression. We tested how neck tissue contrasts, image artifacts and fat separation as opposed to fat suppression in terms of image quality compare between routine and IDEAL FSE. METHODS: IDEAL based and routine T1 and T2 -weighted FSE sequences were applied for neck MRI at 1...
May 2018: European Journal of Radiology
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