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European Radiology

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https://www.readbyqxmd.com/read/28332016/radiology-research-in-mainland-china-in-the-past-10-years-a-survey-of-original-articles-published-in-radiology-and-european-radiology
#1
Long Jiang Zhang, Yun Fei Wang, Zhen Lu Yang, U Joseph Schoepf, Jiaqian Xu, Guang Ming Lu, Enzhong Li
PURPOSE: To evaluate the features and trends of Radiology research in Mainland China through bibliometric analysis of the original articles published in Radiology and European Radiology (ER) between 2006 and 2015. MATERIALS AND METHODS: We reviewed the original articles published in Radiology and ER between 2006 and 2015. The following information was abstracted: imaging subspecialty, imaging technique(s) used, research type, sample size, study design, statistical analysis, study results, funding declarations, international collaborations, number of authors, department and province of the first author...
March 22, 2017: European Radiology
https://www.readbyqxmd.com/read/28332015/doubling-time-of-thymic-epithelial-tumours-on-ct-correlation-with-histological-subtype
#2
Jooae Choe, Sang Min Lee, Soyeoun Lim, Se Hoon Choi, Namkug Kim, Kyung-Hyun Do, Joon Beom Seo
OBJECTIVES: We retrospectively evaluated the doubling time (DT) of thymic epithelial tumours (TET) according to the histological subtype on CT. METHODS: From January 2005 to June 2016, we enrolled 53 patients who had pathologically confirmed TET and at least two CT scans. Tumour size was measured using a two-dimensional method, and the DT was calculated. DTs were compared among histological subtypes, and factors associated with rapid tumour growth (DT <180 days) were assessed...
March 22, 2017: European Radiology
https://www.readbyqxmd.com/read/28332014/diagnostic-accuracy-of-magnetic-resonance-imaging-techniques-for-treatment-response-evaluation-in-patients-with-high-grade-glioma-a-systematic-review-and-meta-analysis
#3
Bart R J van Dijken, Peter Jan van Laar, Gea A Holtman, Anouk van der Hoorn
OBJECTIVE: Treatment response assessment in high-grade gliomas uses contrast enhanced T1-weighted MRI, but is unreliable. Novel advanced MRI techniques have been studied, but the accuracy is not well known. Therefore, we performed a systematic meta-analysis to assess the diagnostic accuracy of anatomical and advanced MRI for treatment response in high-grade gliomas. METHODS: Databases were searched systematically. Study selection and data extraction were done by two authors independently...
March 22, 2017: European Radiology
https://www.readbyqxmd.com/read/28321540/ct-perfusion-imaging-of-the-liver-and-the-spleen-in-patients-with-cirrhosis-is-there-a-correlation-between-perfusion-and-portal-venous-hypertension
#4
Emina Talakić, Silvia Schaffellner, Daniela Kniepeiss, Helmut Mueller, Rudolf Stauber, Franz Quehenberger, Helmut Schoellnast
OBJECTIVES: To correlate hepatic and splenic CT perfusion parameters with hepatic venous pressure gradient (HVPG) measurements in patients with cirrhosis. METHODS: Twenty-one patients with cirrhosis (males, 17; females, 4; mean ± SD age, 57 ± 7 years) underwent hepatic and splenic perfusion CT on a 320-detector row volume scanner as well as invasive measurement of HVPG. Different CT perfusion algorithms (maximum slope analysis and Patlak plot) were used to measure hepatic arterial flow (HAF), portal venous flow (PVF), hepatic perfusion index (HPI), splenic arterial flow (SAF), splenic blood volume (SBV) and splenic clearance (SCL)...
March 20, 2017: European Radiology
https://www.readbyqxmd.com/read/28303317/evaluation-of-the-applicability-of-territorial-arterial-spin-labeling-in-meningiomas-for-presurgical-assessments-compared-with-3-dimensional-time-of-flight-magnetic-resonance-angiography
#5
Yiping Lu, Shihai Luan, Li Liu, Ji Xiong, Jianbo Wen, Jianxun Qu, Daoying Geng, Bo Yin
OBJECTIVES: To prospectively evaluate the application of territorial arterial spin labelling (t-ASL) in comparison with unenhanced three-dimensional time-of-flight magnetic resonance angiography (3D-TOF-MRA) in the identification of the feeding vasculature of meningiomas. METHODS: Thirty consecutive patients with suspected meningiomas underwent conventional MR imaging, unenhanced 3D-TOF-MRA and t-ASL scanning. Four experienced neuro-radiologists assessed the feeding vessels with different techniques separately...
March 16, 2017: European Radiology
https://www.readbyqxmd.com/read/28293774/hiv-associated-neurodegeneration-and-neuroimmunity-multivoxel-mr-spectroscopy-study-in-drug-na%C3%A3-ve-and-treated-patients
#6
Jasmina Boban, Dusko Kozic, Vesna Turkulov, Jelena Ostojic, Robert Semnic, Dajana Lendak, Snezana Brkic
OBJECTIVES: The aim of this study was to test neurobiochemical changes in normal appearing brain tissue in HIV+ patients receiving and not receiving combined antiretroviral therapy (cART) and healthy controls, using multivoxel MR spectroscopy (mvMRS). METHODS: We performed long- and short-echo 3D mvMRS in 110 neuroasymptomatic subjects (32 HIV+ subjects on cART, 28 HIV+ therapy-naïve subjects and 50 healthy controls) on a 3T MR scanner, targeting frontal and parietal supracallosal subcortical and deep white matter and cingulate gyrus (NAA/Cr, Cho/Cr and mI/Cr ratios were analysed)...
March 14, 2017: European Radiology
https://www.readbyqxmd.com/read/28293773/malignancy-risk-estimation-of-screen-detected-nodules-at-baseline-ct-comparison-of-the-pancan-model-lung-rads-and-nccn-guidelines
#7
Sarah J van Riel, Francesco Ciompi, Colin Jacobs, Mathilde M Winkler Wille, Ernst Th Scholten, Matiullah Naqibullah, Stephen Lam, Mathias Prokop, Cornelia Schaefer-Prokop, Bram van Ginneken
OBJECTIVES: To compare the PanCan model, Lung-RADS and the 1.2016 National Comprehensive Cancer Network (NCCN) guidelines for discriminating malignant from benign pulmonary nodules on baseline screening CT scans and the impact diameter measurement methods have on performances. METHODS: From the Danish Lung Cancer Screening Trial database, 64 CTs with malignant nodules and 549 baseline CTs with benign nodules were included. Performance of the systems was evaluated applying the system's original diameter definitions: D(longest-C) (PanCan), D(meanAxial) (NCCN), both obtained from axial sections, and D(mean3D) (Lung-RADS)...
March 14, 2017: European Radiology
https://www.readbyqxmd.com/read/28289946/systematic-evaluation-of-concomitant-extensor-tendon-sheath-injury-in-patients-with-distal-intra-articular-radial-fractures-in-mdct-using-the-floating-fat-sign
#8
Amelie von Schneider-Egestorf, Bernhard Meyer, Frank Wacker, Herbert Rosenthal, Christian von Falck
OBJECTIVES: We aimed to evaluate the involvement of extensor tendon sheaths in a large MDCT study group of patients with distal intra-articular radial fractures using the floating fat sign. METHODS: 603 MDCT scans of patients with acute intra-articular distal radial fractures (Frykman III-VIII) acquired between January 2005 and October 2011 were analysed in consensus by two radiologists. The extensor tendon sheath involvement was assessed for each extensor tendon compartment and visually graded from 0 to 2 based on the amount of fat-fluid levels...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289945/a-novel-representation-of-inter-site-tumour-heterogeneity-from-pre-treatment-computed-tomography-textures-classifies-ovarian-cancers-by-clinical-outcome
#9
Hebert Alberto Vargas, Harini Veeraraghavan, Maura Micco, Stephanie Nougaret, Yulia Lakhman, Andreas A Meier, Ramon Sosa, Robert A Soslow, Douglas A Levine, Britta Weigelt, Carol Aghajanian, Hedvig Hricak, Joseph Deasy, Alexandra Snyder, Evis Sala
PURPOSE: To evaluate the associations between clinical outcomes and radiomics-derived inter-site spatial heterogeneity metrics across multiple metastatic lesions on CT in patients with high-grade serous ovarian cancer (HGSOC). METHODS: IRB-approved retrospective study of 38 HGSOC patients. All sites of suspected HGSOC involvement on preoperative CT were manually segmented. Gray-level correlation matrix-based textures were computed from each tumour site, and grouped into five clusters using a Gaussian Mixture Model...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289944/screen-detected-versus-interval-cancers-effect-of-imaging-modality-and-breast-density-in-the-flemish-breast-cancer-screening-programme
#10
Lore Timmermans, Luc Bleyen, Klaus Bacher, Koen Van Herck, Kim Lemmens, Chantal Van Ongeval, Andre Van Steen, Patrick Martens, Isabel De Brabander, Mathieu Goossens, Hubert Thierens
OBJECTIVES: To investigate if direct radiography (DR) performs better than screen-film mammography (SF) and computed radiography (CR) in dense breasts in a decentralized organised Breast Cancer Screening Programme. To this end, screen-detected versus interval cancers were studied in different BI-RADS density classes for these imaging modalities. METHODS: The study cohort consisted of 351,532 women who participated in the Flemish Breast Cancer Screening Programme in 2009 and 2010...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289943/intra-patient-comparison-of-reduced-dose-model-based-iterative-reconstruction-with-standard-dose-adaptive-statistical-iterative-reconstruction-in-the-ct-diagnosis-and-follow-up-of-urolithiasis
#11
Sean Tenant, Chun Lap Pang, Prageeth Dissanayake, Varut Vardhanabhuti, Colin Stuckey, Catherine Gutteridge, Christopher Hyde, Carl Roobottom
OBJECTIVES: To evaluate the accuracy of reduced-dose CT scans reconstructed using a new generation of model-based iterative reconstruction (MBIR) in the imaging of urinary tract stone disease, compared with a standard-dose CT using 30% adaptive statistical iterative reconstruction. METHODS: This single-institution prospective study recruited 125 patients presenting either with acute renal colic or for follow-up of known urinary tract stones. They underwent two immediately consecutive scans, one at standard dose settings and one at the lowest dose (highest noise index) the scanner would allow...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289942/structured-reporting-of-mri-of-the-shoulder-improvement-of-report-quality
#12
Sebastian Gassenmaier, Marco Armbruster, Florian Haasters, Tobias Helfen, Thomas Henzler, Sedat Alibek, Dominik Pförringer, Wieland H Sommer, Nora N Sommer
OBJECTIVES: To evaluate the effect of structured reports (SRs) in comparison to non-structured narrative free text (NRs) shoulder MRI reports and potential effects of both types of reporting on completeness, readability, linguistic quality and referring surgeons' satisfaction. METHODS: Thirty patients after trauma or with suspected degenerative changes of the shoulder were included in this study (2012-2015). All patients underwent shoulder MRI for further assessment and possible surgical planning...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289941/development-and-validation-of-a-logistic-regression-model-to-distinguish-transition-zone-cancers-from-benign-prostatic-hyperplasia-on-multi-parametric-prostate-mri
#13
Yuji Iyama, Takeshi Nakaura, Kazuhiro Katahira, Ayumi Iyama, Yasunori Nagayama, Seitaro Oda, Daisuke Utsunomiya, Yasuyuki Yamashita
PURPOSE: To develop a prediction model to distinguish between transition zone (TZ) cancers and benign prostatic hyperplasia (BPH) on multi-parametric prostate magnetic resonance imaging (mp-MRI). MATERIALS AND METHODS: This retrospective study enrolled 60 patients with either BPH or TZ cancer, who had undergone 3 T-MRI. We generated ten parameters for T2-weighted images (T2WI), diffusion-weighted images (DWI) and dynamic MRI. Using a t-test and multivariate logistic regression (LR) analysis to evaluate the parameters' accuracy, we developed LR models...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289940/the-effect-of-hippocampal-function-volume-and-connectivity-on-posterior-cingulate-cortex-functioning-during-episodic-memory-fmri-in-mild-cognitive-impairment
#14
Janne M Papma, Marion Smits, Marius de Groot, Francesco U Mattace Raso, Aad van der Lugt, Henri A Vrooman, Wiro J Niessen, Peter J Koudstaal, John C van Swieten, Frederik M van der Veen, Niels D Prins
OBJECTIVES: Diminished function of the posterior cingulate cortex (PCC) is a typical finding in early Alzheimer's disease (AD). It is hypothesized that in early stage AD, PCC functioning relates to or reflects hippocampal dysfunction or atrophy. The aim of this study was to examine the relationship between hippocampus function, volume and structural connectivity, and PCC activation during an episodic memory task-related fMRI study in mild cognitive impairment (MCI). METHOD: MCI patients (n = 27) underwent episodic memory task-related fMRI, 3D-T1w MRI, 2D T2-FLAIR MRI and diffusion tensor imaging...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289939/patient-dose-in-interventional-radiology-a-multicentre-study-of-the-most-frequent-procedures-in-france
#15
Cécile Etard, Emeline Bigand, Cécile Salvat, Vincent Vidal, Jean Paul Beregi, Amaury Hornbeck, Joël Greffier
OBJECTIVES: A national retrospective survey on patient doses was performed by the French Society of Medical physicists to assess reference levels (RLs) in interventional radiology as required by the European Directive 2013/59/Euratom. METHODS: Fifteen interventional procedures in neuroradiology, vascular radiology and osteoarticular procedures were analysed. Kerma area product (KAP), fluoroscopy time (FT), reference air kerma and number of images were recorded for 10 to 30 patients per procedure...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289938/primary-and-metastatic-ovarian-cancer-characterization-by-3-0t-diffusion-weighted-mri
#16
Auni Lindgren, Maarit Anttila, Suvi Rautiainen, Otso Arponen, Annukka Kivelä, Petri Mäkinen, Kirsi Härmä, Kirsi Hämäläinen, Veli-Matti Kosma, Seppo Ylä-Herttuala, Ritva Vanninen, Hanna Sallinen
OBJECTIVES: We aimed to investigate whether apparent diffusion coefficients (ADCs) measured by 3.0T diffusion-weighted magnetic resonance imaging (DWI) associate with histological aggressiveness of ovarian cancer (OC) or predict the clinical outcome. This prospective study enrolled 40 patients with primary OC, treated 2011-2014. METHODS: DWI was performed prior to surgery. Two observers used whole lesion single plane region of interest (WLsp-ROI) and five small ROIs (S-ROI) to analyze ADCs...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289937/diagnostic-accuracy-of-virtual-non-contrast-enhanced-dual-energy-ct-for-diagnosis-of-adrenal-adenoma-a-systematic-review-and-meta-analysis
#17
Michael J Connolly, Matthew D F McInnes, Mohamed El-Khodary, Trevor A McGrath, Nicola Schieda
OBJECTIVE: To compare the diagnostic accuracy of dual-energy (DE) virtual non-contrast computed tomography (vNCT) to non-contrast CT (NCT) for the diagnosis of adrenal adenomas. METHODS: Search of multiple databases and grey literature was performed. Two reviewers independently applied inclusion criteria and extracted data. Risk of bias was assessed using QUADAS-2. Summary estimates of diagnostic accuracy were generated and sources of heterogeneity were assessed...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289936/comparison-of-spin-echo-echoplanar-imaging-and-gradient-recalled-echo-based-mr-elastography-at-3-tesla-with-and-without-gadoxetic-acid-administration
#18
Yong Seek Kim, Ji Soo Song, Stephan Kannengiesser, Seung Young Seo
OBJECTIVE: To compare spin-echo echoplanar imaging (SE-EPI) and gradient recalled echo (GRE) MR elastography (MRE) at 3 T with and without gadoxetic acid administration. METHODS: We included 84 patients who underwent MRE before and after gadoxetic acid administration, each time using SE-EPI and GRE sequences. Diagnostic performance for predicting clinical liver cirrhosis and high-risk oesophageal varices was assessed using the area under the receiver-operating characteristic curve (AUC)...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289935/repeated-intravenous-administration-of-gadobutrol-does-not-lead-to-increased-signal-intensity-on-unenhanced-t1-weighted-images-a-voxel-based-whole-brain-analysis
#19
Soenke Langner, Marie-Luise Kromrey, Jens-Peter Kuehn, Matthias Grothe, Martin Domin
OBJECTIVES: To identify a possible association between repeated intravenous administration of gadobutrol and increased signal intensity in the grey and white matter using voxel-based whole-brain analysis. METHODS: In this retrospective single-centre study, 217 patients with a clinically isolated syndrome underwent baseline brain magnetic resonance imaging and at least one annual follow-up examination with intravenous administration of 0.1 mmol/kg body weight of gadobutrol...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28289934/anoperineal-disease-in-hidradenitis-suppurativa-mr-imaging-distinction-from-perianal-crohn-s-disease
#20
Louise Monnier, Anthony Dohan, Nedjoua Amara, Anne-Marie Zagdanski, Moustapha Drame, Philippe Soyer, Christine Hoeffel
OBJECTIVE: To determine whether Hidradenitis suppurativa (HS)-related anoperineal disease can be distinguished from Crohn's disease (CD) using MRI. METHODS: Pelvic MRI of 23 HS and 46 CD patients with anoperineal disease between 2007 and 2014 were independently analysed by two radiologists. For diagnosis of HS, sensitivity, specificity and positive likelihood ratios (LRs) of inflammatory features and of their anatomical distribution were calculated and compared to those of CD...
March 13, 2017: European Radiology
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