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European Radiology

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https://www.readbyqxmd.com/read/30019144/assessment-of-cardiac-lead-perforation-comparison-among-chest-radiography-transthoracic-echocardiography-and-electrocardiography-gated-contrast-enhanced-cardiac-ct
#1
Xiang Zhang, Chushan Zheng, Peiwei Wang, Dongye Wang, Boshui Huang, Guozhao Li, Huijun Hu, Zehong Yang, Xiaohui Duan, Shaoxin Zheng, Pinming Liu, Jingfeng Wang, Jun Shen
OBJECTIVES: Cardiac lead perforation is a rare but potentially life-threatening event. The purpose of this study was to investigate the diagnostic performances of chest radiography, transthoracic echocardiography (TTE) and electrocardiography (ECG)-gated contrast-enhanced cardiac CT in the assessment of cardiac lead perforation. METHODS: This retrospective study was approved by the ethics review board of Sun Yat-Sen Memorial Hospital at Sun Yat-Sen University (Guangzhou, China), and the need to obtain informed consent was waived...
July 17, 2018: European Radiology
https://www.readbyqxmd.com/read/30019143/diffusion-and-perfusion-mri-quantification-in-ileal-crohn-s-disease
#2
Stefanie J Hectors, Sonja Gordic, Sahar Semaan, Octavia Bane, Robert Hirten, Xiaoyu Jia, Jean-Frederic Colombel, Bachir Taouli
OBJECTIVES: To quantify intravoxel incoherent motion (IVIM)-DWI and dynamic contrast-enhanced (DCE)-MRI parameters in normal and abnormal ileal segments in Crohn's disease (CD) patients and to assess the association of these parameters with clinical and MRI-based measurements of CD activity. METHODS: In this prospective study, 27 CD patients (M/F 18/9, mean age 42 years) underwent MR enterography, including IVIM-DWI and DCE-MRI. IVIM-DWI and DCE-MRI parameters were quantified in normal and abnormal small bowel segments, the latter identified by the presence of inflammatory changes...
July 17, 2018: European Radiology
https://www.readbyqxmd.com/read/30019142/dose-reference-levels-and-clinical-determinants-in-stroke-neuroradiology-interventions
#3
Jad Farah, Aymeric Rouchaud, Theophraste Henry, Catherine Regen, Cristian Mihalea, Jacques Moret, Laurent Spelle
OBJECTIVES: To establish dose reference levels (RLs) for stroke interventions while carefully analysing the impact of clinical and technical parameters on patient exposure. METHODS: The study retrospectively analysed data from 377 stroke patients prospectively collected between 15 October 2015 and 30 March 2017 at a single, level-3 stroke centre equipped with Philips Allura Clarity systems. Local dose RLs were first derived as the 75th percentile of the dose area product (DAP), cumulative air kerma (Ka,r ), fluoroscopy time (FT) and the number of images (NI)...
July 17, 2018: European Radiology
https://www.readbyqxmd.com/read/30019141/pre-procedural-ct-angiography-inferior-vena-cava-measurements-a-predictor-of-mortality-in-patients-undergoing-transcatheter-aortic-valve-implantation
#4
Matthias Eberhard, Gianluca Milanese, Michael Ho, Stefan Zimmermann, Thomas Frauenfelder, Fabian Nietlispach, Francesco Maisano, Felix C Tanner, Thi Dan Linh Nguyen-Kim
OBJECTIVES: To assess the value of pre-procedural computed tomography angiography (CTA) measurements of the suprahepatic inferior vena cava (IVC) to detect elevated central venous pressure (CVP) assessed by right heart catheterisation (RHC), and to predict post-procedural 1-year mortality in a cohort of patients undergoing transcatheter aortic valve implantation (TAVI). METHODS: We retrospectively evaluated 408 consecutive patients undergoing CTA before TAVI between January 2011 and December 2014...
July 17, 2018: European Radiology
https://www.readbyqxmd.com/read/30019140/the-role-of-wall-shear-stress-in-the-parent-artery-as-an-independent-variable-in-the-formation-status-of-anterior-communicating-artery-aneurysms
#5
Xin Zhang, Zhi-Qiang Yao, Tamrakar Karuna, Xu-Ying He, Xue-Min Wang, Xi-Feng Li, Wen-Chao Liu, Ran Li, Shen-Quan Guo, Yun-Chang Chen, Gan-Cheng Li, Chuan-Zhi Duan
OBJECTIVES: The study aimed to determine which hemodynamic parameters independently characterize anterior communicating artery (AcomA) aneurysm formation and explore the threshold of wall shear stress (WSS) of the parent artery to better illustrate the correlation between the magnitude of WSS and AcomA aneurysm formation. METHODS: Eighty-one patients with AcomA aneurysms and 118 patients without intracranial aneurysms (control population), as confirmed by digital subtraction angiography (DSA) from January 2014 to May 2017, were included in this cross-sectional study...
July 17, 2018: European Radiology
https://www.readbyqxmd.com/read/30014204/prospective-comparison-of-diffusion-weighted-mri-and-dynamic-gd-eob-dtpa-enhanced-mri-for-detection-and-staging-of-hepatic-fibrosis-in-primary-sclerosing-cholangitis
#6
S Keller, J Sedlacik, T Schuler, R Buchert, M Avanesov, R Zenouzi, A W Lohse, H Kooijman, J Fiehler, C Schramm, J Yamamura
PURPOSE: To assess the diagnostic value of multiparametric magnetic resonance imaging (MRI) including dynamic Gd-EOB-DTPA-enhanced (DCE) and diffusion-weighted (DW) imaging for diagnosis and staging of hepatic fibrosis in primary sclerosing cholangitis (PSC) using transient elastography as a standard reference. MATERIAL AND METHODS: Multiparametric MRI was prospectively performed on a 3.0-Tesla scanner in 47 patients (age 43.9±14.3 years). Transient elastography derived liver stiffness measurements (LSM), DCE-MRI derived parameters (hepatocellular uptake rate (Ki), arterial (Fa), portal venous (Fv) and total (Ft) blood flow, mean transit time (MTT), and extracellular volume (Ve)) and the apparent diffusion coefficient (ADC) were calculated...
July 16, 2018: European Radiology
https://www.readbyqxmd.com/read/30014203/chemical-shift-imaging-for-evaluation-of-adrenal-masses-a-systematic-review-and-meta-analysis
#7
Ivan Platzek, Dominik Sieron, Verena Plodeck, Angelika Borkowetz, Michael Laniado, Ralf-Thorsten Hoffmann
OBJECTIVES: To perform a systematic review and meta-analysis of published data to evaluate the utility of chemical shift imaging (CSI) for differentiating between adrenal adenomas and non-adenomas. METHODS: A systematic search of the MEDLINE, Web of Science Core Collection, EMBASE and Cochrane Central Register of Controlled Trials electronic databases was performed. The methodological quality of the included studies was assessed by using the QUADAS-2 (Quality Assessment of Diagnostic Accuracy Studies) tool...
July 16, 2018: European Radiology
https://www.readbyqxmd.com/read/30014202/association-of-paraspinal-muscle-water-fat-mri-based-measurements-with-isometric-strength-measurements
#8
Sarah Schlaeger, Stephanie Inhuber, Alexander Rohrmeier, Michael Dieckmeyer, Friedemann Freitag, Elisabeth Klupp, Dominik Weidlich, Georg Feuerriegel, Florian Kreuzpointner, Ansgar Schwirtz, Ernst J Rummeny, Claus Zimmer, Jan S Kirschke, Dimitrios C Karampinos, Thomas Baum
OBJECTIVES: Chemical shift encoding-based water-fat MRI derived proton density fat fraction (PDFF) of the paraspinal muscles has been emerging as a surrogate marker in subjects with sarcopenia, lower back pain, injuries and neuromuscular disorders. The present study investigates the performance of paraspinal muscle PDFF and cross-sectional area (CSA) in predicting isometric muscle strength. METHODS: Twenty-six healthy subjects (57.7% women; age: 30 ± 6 years) underwent 3T axial MRI of the lumbar spine using a six-echo 3D spoiled gradient echo sequence for chemical shift encoding-based water-fat separation...
July 16, 2018: European Radiology
https://www.readbyqxmd.com/read/30003316/imaging-prediction-of-isocitrate-dehydrogenase-idh-mutation-in-patients-with-glioma-a-systemic-review-and-meta-analysis
#9
Chong Hyun Suh, Ho Sung Kim, Seung Chai Jung, Choong Gon Choi, Sang Joon Kim
OBJECTIVES: To evaluate the imaging features of isocitrate dehydrogenase (IDH) mutant glioma and to assess the diagnostic performance of magnetic resonance imaging (MRI) for prediction of IDH mutation in patients with glioma. METHODS: A systematic search of Ovid-MEDLINE and EMBASE up to 10 October 2017 was conducted to find relevant studies. The search terms combined synonyms for 'glioma', 'IDH mutation' and 'MRI'. Studies evaluating the imaging features of IDH mutant glioma and the diagnostic performance of MRI for prediction of IDH mutation in patients with glioma were selected...
July 12, 2018: European Radiology
https://www.readbyqxmd.com/read/29995239/endometrial-cancer-mri-staging-updated-guidelines-of-the-european-society-of-urogenital-radiology
#10
Stephanie Nougaret, Mariana Horta, Evis Sala, Yulia Lakhman, Isabelle Thomassin-Naggara, Aki Kido, Gabriele Masselli, Nishat Bharwani, Elizabeth Sadowski, Andrea Ertmer, Milagros Otero-Garcia, Rahel A Kubik-Huch, Teresa M Cunha, Andrea Rockall, Rosemarie Forstner
OBJECTIVES: To update the 2009 ESUR endometrial cancer guidelines and propose strategies to standardize image acquisition, interpretation and reporting for endometrial cancer staging with MRI. METHODS: The published evidence-based data and the opinion of experts were combined using the RAND-UCLA Appropriateness Method and formed the basis for these consensus guidelines. The responses of the experts to 81 questions regarding the details of patient preparation, MR imaging protocol, image interpretation and reporting were collected, analysed and classified as "RECOMMENDED" versus "NOT RECOMMENDED" (if at least 80% consensus among experts) or uncertain (if less than 80% consensus among experts)...
July 11, 2018: European Radiology
https://www.readbyqxmd.com/read/29992388/delayed-tumour-enhancement-on-gadoxetate-enhanced-mri-is-associated-with-overall-survival-in-patients-with-colorectal-liver-metastases
#11
Helen M C Cheung, Paul J Karanicolas, Natalie Coburn, Vikrum Seth, Calvin Law, Laurent Milot
OBJECTIVES: To determine whether tumour enhancement on preoperative delayed-phase gadoxetate-enhanced MRI can predict long-term survival in patients with colorectal liver metastases (CRCLM) post-hepatectomy. MATERIALS AND METHODS: Sixty-five patients who received a preoperative gadoxetate-enhanced MRI prior to liver resection for CRCLM from January 1, 2010, to December 31, 2012, were included in this retrospective study. Target tumour enhancement (TuEn) was calculated as the mean percentage increase in SNR from precontrast to 10-min or 20-min delayed phase for up to two target lesions...
July 10, 2018: European Radiology
https://www.readbyqxmd.com/read/29992387/lung-cancer-screening-with-mri-evaluation-of-mri-for-lung-cancer-screening-by-comparison-of-ldct-and-mri-derived-lung-rads-categories-in-the-first-two-screening-rounds
#12
Michael Meier-Schroers, Rami Homsi, Jürgen Gieseke, Hans Heinz Schild, Daniel Thomas
PURPOSE: To evaluate MRI for lung cancer screening comparing LDCT- and MRI-derived Lung-RADS categories in the first two screening rounds. MATERIALS AND METHODS: 224 participants in a lung cancer screening study were examined with MRI and low-dose CT (LDCT). Acquired MRI sequences were T2, balanced, T1 and DWI. MRI was prospectively analysed regarding nodules. Minimum nodule size was 4 mm. Nodules were assigned a Lung-RADS score based on appearance and size at baseline and after 3, 6 and 12 months...
July 10, 2018: European Radiology
https://www.readbyqxmd.com/read/29992386/sonoelastography-for-differential-diagnosis-between-malignant-and-benign-parotid-lesions-a-meta-analysis
#13
Yun-Fei Zhang, Hong Li, Xue-Mei Wang, Yun-Fei Cai
OBJECTIVES: To assess the performance of sonoelastography for differential diagnosis between malignant and benign parotid lesions using a meta-analysis. METHODS: An independent literature search of English medical databases, such as PubMed, Embase and Medline ( Embase.com ), Web of Science, Cochrane Library and Ovid was performed. The diagnostic accuracy of sonoelastography was compared with that of histopathology and/or cytology, which was used as reference standard...
July 10, 2018: European Radiology
https://www.readbyqxmd.com/read/29992385/correction-to-ct-metal-artifacts-in-patients-with-total-hip-replacements-for-artifact-reduction-monoenergetic-reconstructions-and-post-processing-algorithms-are-both-efficient-but-not-similar
#14
Kai Roman Laukamp, Simon Lennartz, Victor-Frederic Neuhaus, Nils Große Hokamp, Robert Rau, Markus Le Blanc, Nuran Abdullayev, Anastasios Mpotsaris, David Maintz, Jan Borggrefe
The original version of this article, published on 03 May 2018, unfortunately contained a mistake. The following correction has therefore been made in the original.
July 10, 2018: European Radiology
https://www.readbyqxmd.com/read/29992384/motion-corrected-multiparametric-renal-arterial-spin-labelling-at-3-t-reproducibility-and-effect-of-vasodilator-challenge
#15
Saba Shirvani, Paweł Tokarczuk, Ben Statton, Marina Quinlan, Alaine Berry, James Tomlinson, Peter Weale, Bernd Kühn, Declan P O'Regan
OBJECTIVES: We investigated the feasibility and reproducibility of free-breathing motion-corrected multiple inversion time (multi-TI) pulsed renal arterial spin labelling (PASL), with general kinetic model parametric mapping, to simultaneously quantify renal perfusion (RBF), bolus arrival time (BAT) and tissue T1 . METHODS: In a study approved by the Health Research Authority, 12 healthy volunteers (mean age, 27.6 ± 18.5 years; 5 male) gave informed consent for renal imaging at 3 T using multi-TI ASL and conventional single-TI ASL...
July 10, 2018: European Radiology
https://www.readbyqxmd.com/read/29987421/follow-up-infarct-volume-as-a-mediator-of-endovascular-treatment-effect-on-functional-outcome-in-ischaemic-stroke
#16
K C J Compagne, A M M Boers, H A Marquering, O A Berkhemer, A J Yoo, L F M Beenen, R J van Oostenbrugge, W H van Zwam, Y B W E M Roos, C B Majoie, A C G M van Es, A van der Lugt, D W J Dippel, H Lingsma
OBJECTIVE: The putative mechanism for the favourable effect of endovascular treatment (EVT) on functional outcome after acute ischaemic stroke is preventing follow-up infarct volume (FIV) progression. We aimed to assess to what extent difference in FIV explains the effect of EVT on functional outcome in a randomised trial of EVT versus no EVT (MR CLEAN). METHODS: FIV was assessed on non-contrast CT scan 5-7 days after stroke. Functional outcome was the score on the modified Rankin Scale at 3 months...
July 9, 2018: European Radiology
https://www.readbyqxmd.com/read/29987420/the-effect-of-tube-voltage-combination-on-image-artefact-and-radiation-dose-in-dual-source-dual-energy-ct-comparison-between-conventional-80-140-kv-and-80-150-kv-plus-tin-filter-for-gout-protocol
#17
Ji Young Jeon, Sheen-Woo Lee, Yu Mi Jeong, Han Joo Baek
OBJECTIVES: In dual-source CT, dual-energy (DE) performance is affected by various X-ray tube voltage combinations with and without tin filter (Sn). The purpose of this study was to assess the utility of the 80/150 Sn kV voltage combination in terms of image artefact and radiation dose for DECT gout protocol, compared with the conventional 80/140 kV. METHODS: Seventy-four patients with suspected gout who underwent dual-source DECT examinations scanned at 80/140 kV (n = 37) and at 80/150 Sn kV (n = 37) were included...
July 9, 2018: European Radiology
https://www.readbyqxmd.com/read/29987419/validation-of-scoring-hip-osteoarthritis-with-mri-shomri-scores-using-hip-arthroscopy-as-a-standard-of-reference
#18
Jan Neumann, Alan L Zhang, Benedikt J Schwaiger, Michael A Samaan, Richard Souza, Sarah C Foreman, Gabby B Joseph, Trevor Grace, Sharmila Majumdar, Thomas M Link
PURPOSE: To validate SHOMRI gradings in preoperative hip magnetic resonance imaging (MRI) with intra-arthroscopic evaluation of intraarticular hip abnormalities. METHODS: Preoperative non-arthrographic 3.0-T MRIs of 40 hips in 39 patients (1 patient with bilateral hip surgery) with femoroacetabular impingement (FAI) syndrome (mean age, 34.7 years ± 9.0; n = 16 females), refractory to conservative measures, that underwent hip arthroscopy were retrospectively assessed by two radiologists for chondrolabral abnormalities and compared with intra-arthroscopic findings as the standard of reference...
July 9, 2018: European Radiology
https://www.readbyqxmd.com/read/29987418/bold-cardiac-mri-for-differentiating-reversible-and-irreversible-myocardial-damage-in-st-segment-elevation-myocardial-infarction
#19
Bing-Hua Chen, Ruo-Yang Shi, Dong-Aolei An, Rui Wu, Chong-Wen Wu, Jiani Hu, Amanda Manly, Hisham Kaddurah, Jie He, Jun Pu, Jian-Rong Xu, Lian-Ming Wu
OBJECTIVES: BOLD imaging is a quantitative MRI technique allowing the evaluation of the balance between supply/demand in myocardial oxygenation and myocardial haemorrhage. We sought to investigate the ability of BOLD imaging to differentiate reversible from irreversible myocardial injury as well as the chronological progression of myocardial oxygenation after reperfusion in patients with ST segment elevation myocardial infarction (STEMI). METHODS: Twenty-two patients (age, 60 ± 11 years; 77...
July 9, 2018: European Radiology
https://www.readbyqxmd.com/read/29987417/correction-to-mri-assessment-of-the-thigh-musculature-in-dermatomyositis-and-healthy-subjects-using-diffusion-tensor-imaging-intravoxel-incoherent-motion-and-dynamic-dti
#20
E E Sigmund, S H Baete, T Luo, K Patel, D Wang, I Rossi, A Duarte, M Bruno, D Mossa, A Femia, S Ramachandran, D Stoffel, J S Babb, A G Franks, J Bencardino
The original version of this article, published on 04 June 2018, unfortunately contained a mistake.
July 9, 2018: European Radiology
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