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European Journal of Radiology

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https://www.readbyqxmd.com/read/30177405/clinical-application-of-radiation-dose-reduction-for-head-and-neck-ct
#1
REVIEW
Hidetake Yabuuchi, Takeshi Kamitani, Koji Sagiyama, Yuzo Yamasaki, Yuko Matsuura, Takuya Hino, Soichiro Tsutsui, Masatoshi Kondo, Takashi Shirasaka, Hiroshi Honda
CT has advantages over MRI including rapid acquisition, and high spatial resolution for detailed anatomical information on the head and neck region. Therefore, CT is the first choice of imaging modality for the larynx, hypopharynx, sinonasal region, and temporal bone. Introduction of multi-detector CT (MDCT) scanning has allowed reduction in scan time, availability of isovoxel image, and relevant 3D image reconstruction; however, it leads to over-ranging due to helical scanning, and increased radiation dose due to 3D-volume imaging, and small detector size...
August 24, 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30173941/ankle-and-midfoot-ligaments-ultrasound-with-anatomical-correlation-a-review
#2
REVIEW
Seema Döring, Steven Provyn, Stefaan Marcelis, Maryam Shahabpour, Cedric Boulet, Johan de Mey, Aron De Smet, Michel De Maeseneer
We present a detailed overview of anatomical and US features of ankle and midfoot ligaments based on our own dissections and cadaver studies as well as US imaging in cadavers and volunteers. The ligament anatomy about the ankle and midfoot is complex. Most ligaments are superficial and hence very well accessible for US. US technique to obtain optimal visualization however is difficult and requires a learning curve. We discuss US technique in detail for each individual ligament. We divided the ligaments in different groups: tibiofibular ligaments, Bassett's ligament, lateral collateral ligament complex (anterior talofibular ligament, calcaneofibular ligament, lateral talocalcaneal ligament, posterior talofibular ligament), medial collateral ligament complex, spring ligament, Chopart joint ligaments (bifurcate ligament, dorsal talonavicular ligament, lateral calcaneocuboid ligament, long and short plantar ligaments), Lisfranc ligaments, sinus tarsi ligaments...
August 12, 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150057/pilomatricoma-calcifying-epithelioma-mdct-and-mr-imaging-findings-in-31-patients-with-radiological-pathological-correlation
#3
Kun-Ming Yi, Kang Chen, Lu Wang, Xiao-Juan Deng, Ying Zeng, Yi Wang
PURPOSE: To describe the radiological characteristics of pilomatricomas on multi-detector computed tomography (MDCT) and magnetic resonance imaging (MRI), and to correlate the radiological findings and pathological features. MATERIALS AND METHODS: The radiological findings of 41 pilomatricomas in 31 patients were retrospectively reviewed. The images were evaluated with emphasis on calcifications, reticular and ring-like appearances, enhancement patterns, circular target sign and peritumoral fat stranding, and correlating these with pathological features...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150056/t2-relaxation-times-of-the-anterolateral-femoral-cartilage-in-patients-after-acl-reconstruction-with-and-without-a-deep-lateral-femoral-notch-sign
#4
Cyrus Behzadi, Goetz H Welsch, Jan-Philipp Petersen, Bjoern P Schoennagel, Peter Bannas, Michael G Kaul, Gerhard Schoen, Josephine Berger-Groch, Gerhard Adam, Marc Regier
PURPOSE: To quantitatively assess T2 relaxation times of the anterolateral femoral cartilage following anterior cruciate ligament (ACL)-reconstruction with and without a positive deep lateral femoral notch sign (DLNS) at post-traumatic MRI. MATERIALS AND METHODS: In 52 patients post-traumatic MRI as well as 12 months after ACL-rupture (ACLR) and surgical treatment were analysed. In 28 patients a positive DLNS was present at post-traumatic MRI. For quantitative analysis, T2 relaxation time measurements (7 TE: 10-70 ms) were performed at time of re-evaluation...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150055/diagnostic-accuracy-of-magnetic-resonance-imaging-in-assessing-placental-adhesion-disorder-in-patients-with-placenta-previa-correlation-with-histological-findings
#5
S Maurea, V Romeo, P P Mainenti, M I Ginocchio, G Frauenfelder, F Verde, R Liuzzi, M D'Armiento, L Sarno, M Morlando, M Petretta, P Martinelli, A Brunetti
OBJECTIVE: To evaluate MRI accuracy in assessing placental adhesion disorders (PAD) in patients with placenta previa correlating imaging results with histological findings. MATERIALS AND METHODS: Sixty-one patients who underwent abdomino-pelvic magnetic resonance imaging (MRI) for ultrasound suspicion of PAD were prospectively evaluated. T1- and T2-weighted images, with and without fat suppression, were obtained in the three conventional planes using a 1.5 T MRI scanner...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150054/histogram-analysis-of-apparent-diffusion-coefficient-maps-in-the-prognosis-of-patients-with-locally-advanced-head-and-neck-squamous-cell-carcinoma-comparison-of-different-region-of-interest-selection-methods
#6
Ji-Liang Ren, Ying Yuan, Xiao-Xia Li, Yi-Qian Shi, Xiao-Feng Tao
OBJECTIVE: To investigate the influence of different region of interest (ROI) selection methods on the histogram analysis of apparent diffusion coefficient (ADC) maps and to compare their performance in predicting overall survival (OS) in patients with locally advanced head and neck squamous cell carcinoma (HNSCC). METHODS: A total of 73 patients with locally advanced HNSCC who underwent pretreatment diffusion-weighted magnetic resonance imaging were included. Based on the largest slice ROI (ROILS ) and whole tumor ROI (ROIWT ), ADC histogram parameters including mean ADC (ADCmean ); median ADC (ADCmedian ); 10th, 25th, 75th, and 90th percentiles of ADC values (ADC10 , ADC25 , ADC75 , and ADC90 ); kurtosis; and skewness were obtained...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150053/radiological-assessment-of-local-resectability-status-in-patients-with-pancreatic-cancer-interreader-agreement-and-reader-performance-in-two-different-classification-systems
#7
Louiza Loizou, Carlos Valls Duran, Elisabet Axelsson, Mats Andersson, Inger Keussen, Jörgen Strinnholm, Wolf Bartholomä, Marco Del Chiaro, Ralf Segersvärd, Lars Lundell, Nikolaos Kartalis
OBJECTIVES: To assess the interreader agreement and reader performance in the evaluation of patients with pancreatic cancer (PC) in two classification systems of local resectability status prior to initiation of therapy, namely the National Comprehensive Cancer Network (NCCN) and Karolinska classification system (KCS). METHODS: In this ethics review board-approved retrospective study, six radiologists independently evaluated pancreatic CT-examinations of 30 patients randomly selected from a tertiary referral centre's multidisciplinary tumour board database...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150052/dynamic-contrast-enhanced-perfusion-ct-imaging-a-diagnostic-biomarker-tool-for-survival-prediction-of-tumour-response-to-antiangiogenetic-treatment-in-patients-with-advanced-hcc-lesions
#8
Davide Ippolito, Giulia Querques, Stefano Okolicsanyi, Cammillo Talei Franzesi, Anna Pecorelli, Sophie Lombardi, Eleonora Orsini, Mario Strazzabosco, Sandro Sironi
PURPOSE: To investigate whether perfusion-CT (p-CT) imaging could depict the inhibition of tumor neoangiogenesis induced by Sorafenib in advanced hepatocellular carcinoma (HCC), and whether it could be useful in predicting survival during treatment. MATERIALS AND METHODS: Ninety-eight p-CT examinations were performed among 29 cirrhotic patients, with advanced HCC, before and every 2 months after Sorafenib administration, on a 256-slice MDCT scanner. Perfusion parameters were considered and statistically compared, at baseline and follow-up, between non-progressor (complete response, stable disease or partial response) and progressor (progressive disease) group...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150051/effectiveness-of-a-new-radiation-protection-system-in-the-interventional-radiology-setting
#9
Robin Etzel, Alexander M König, Boris Keil, Martin Fiebich, Andreas H Mahnken
OBJECTIVES: The goal of this study was to examine a new weightless-like radiation protection garment regarding its radiation protection efficacy and to compare it to a conventional two-piece apron suit plus thyroid collar and standard ancillary shields. MATERIAL AND METHODS: All measurements were carried out using a clinical angiography system with a standardized fluoroscopy protocol for different C-arm angulations. An anthropomorphic torso phantom served as a scattering body...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150050/biliary-complications-after-liver-transplantation-assessment-with-mr-cholangiopancreatography-and-mr-imaging-at-3t-device
#10
Piero Boraschi, Francescamaria Donati, Federica Pacciardi, Davide Ghinolfi, Fabio Falaschi
PURPOSE: Our study was aimed to assess the diagnostic value of MR cholangiopancreatography (MRCP) and MR imaging at 3 T device when evaluating biliary adverse events after liver transplantation. MATERIALS AND METHODS: A series of 384 MR examinations in 232 liver transplant subjects with suspected biliary complications (impaired liver function tests and/or biliary abnormalities on ultrasound) were performed at 3 T device (GE-DISCOVERY MR750; GE Healthcare). After the acquisition of axial 3D dual-echo T1-weighted images and T2-weighted sequences (propeller and SS-FSE), MRCP was performed through coronal thin-slab 3D-FRFSE and coronal oblique thick-slab SSFSE T2w sequences...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150049/carotid-artery-flow-as-determined-by-real-time-phase-contrast-flow-mri-and-neurovascular-ultrasound-a-comparative-study-of-healthy-subjects
#11
Ilko L Maier, Sabine Hofer, Arun A Joseph, K Dietmar Merboldt, Zhengguo Tan, Katharina Schregel, Michael Knauth, Mathias Bähr, Marios-Nikos Psychogios, Jan Liman, Jens Frahm
BACKGROUND: The assessment of carotid artery flow by neurovascular ultrasound (nvUS) can be complemented by real-time phase-contrast (RT-PC) flow MRI which apart from quantitative flow parameters offers velocity distributions across the entire vessel lumen. MATERIALS AND METHODS: The feasibility and diagnostic potential of RT-PC flow MRI was evaluated in 20 healthy volunteers in comparison to conventional nvUS. RT-PC flow MRI at 40 ms temporal resolution and 0...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150048/reference-values-of-liver-volume-in-caucasian-population-and-factors-influencing-liver-size
#12
M L Kromrey, T Ittermann, C vWahsen, V Plodeck, D Seppelt, R T Hoffmann, P Heiss, J P Kühn
PURPOSE: To investigate factors influencing liver size and to determine reference values of liver volume (LV) for healthy subjects. METHODS: 2773 volunteers underwent magnetic resonance imaging (MRI) of the liver in the setting of the population based Study of Health in Pomerania. Based on measurement of maximum diameters in three orientations, LVs were calculated and correlated with demographic factors such as age, gender, and body mass index. In addition, LVs of healthy volunteers and participants with parenchymal liver diseases such as fatty liver disease, iron overload, fibrosis/cirrhosis were compared...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150047/effect-of-integrating-digital-breast-tomosynthesis-3d-mammography-with-acquired-or-synthetic-2d-mammography-on-radiologists-true-positive-and-false-positive-detection-in-a-population-screening-trial-a-descriptive-study
#13
Daniela Bernardi, Tong Li, Marco Pellegrini, Petra Macaskill, Marvi Valentini, Carmine Fantò, Livio Ostillio, Nehmat Houssami
BACKGROUND: We previously reported the Screening with tomosynthesis or standard mammography-2 (STORM-2) trial, showing that tomosynthesis (3D-mammography) screening detected more cancers than 2D-mammography in double-reading practice. In this study, we report reader-specific detection measures for radiologists who performed the screen-reading in this trial. METHODS: This is a sub-study of the STORM-2 trial which prospectively integrated 3D-mammography with acquired or synthetized 2D-mammograms in parallel double-reading arms...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150046/3d-c-arm-cone-beam-ct-for-targeting-the-portal-vein-during-tips-initial-clinical-experience
#14
Cyril Chivot, Brice Robert, Roger Bouzerar, Romain Popoff, Thierry Yzet
PURPOSE: To evaluate the feasibility, safety and usefulness of 3D CBCT with a new injection protocol for targeting the portal vein during TIPS and to determine if it allows decreasing the duration of the procedure. MATERIALS AND METHODS: 3D CBCT was obtained during creation of TIPS in 15 patients (group 2). Portogram quality score was defined using a 5 points scale. The time required to achieve portal puncture was also recorded and results were compared retrospectively in 15 patients who underwent TIPS without 3D CBCT (group 1)...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150045/on-differentiation-between-vasogenic-edema-and-non-enhancing-tumor-in-high-grade-glioma-patients-using-a-support-vector-machine-classifier-based-upon-pre-and-post-surgery-mri-images
#15
Anirban Sengupta, Sumeet Agarwal, Pradeep Kumar Gupta, Sunita Ahlawat, Rana Patir, Rakesh Kumar Gupta, Anup Singh
PURPOSE: High grade gliomas (HGGs) are infiltrative in nature. Differentiation between vasogenic edema and non-contrast enhancing tumor is difficult as both appear hyperintense in T2 -W/FLAIR images. Most studies involving differentiation between vasogenic edema and non-enhancing tumor consider radiologist-based tumor delineation as the ground truth. However, analysis by a radiologist can be subjective and there remain both inter- and intra-rater differences. The objective of the current study is to develop a methodology for differentiation between non-enhancing tumor and vasogenic edema in HGG patients based on T1 perfusion MRI parameters, using a ground truth which is independent of a radiologist's manual delineation of the tumor...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150044/quantification-accuracy-for-dynamic-contrast-enhanced-dce-ct-imaging-phantom-and-quality-assurance-framework
#16
C Coolens, H Mohseni, S Dhodi, S Ma, H Keller, D A Jaffray
PURPOSE: Standardization and protocol optimization is essential for quantification of Dynamic Contrast Enhanced CT as an imaging biomarker. Currently, no commercially available quality assurance (QA) phantoms can provide for testing a complete set of imaging parameters pertaining to routine quality control for contrast-enhanced (CE) CT, as well as spatiotemporal accuracy. The purpose of this work was, therefore: (a) developing a solid calibration phantom for routine CE CT quality assurance; (b) investigating the sensitivity of CECT to organ motion, and (c) characterizing a volumetric CT scanner for CECT...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150043/dual-energy-ct-in-patients-with-colorectal-cancer-improved-assessment-of-hypoattenuating-liver-metastases-using-noise-optimized-virtual-monoenergetic-imaging
#17
Lukas Lenga, Rouben Czwikla, Julian L Wichmann, Doris Leithner, Moritz H Albrecht, Christian Booz, Christophe T Arendt, Ibrahim Yel, Tommaso D'Angelo, Thomas J Vogl, Simon S Martin
PURPOSE: To assess the value of the noise-optimized virtual monoenergetic imaging (VMI+) technique on quantitative and qualitative image parameters in patients with hypoattenuating liver metastases from colorectal cancer (CRC) at abdominal dual-energy CT (DECT). MATERIALS AND METHODS: Fifty-three consecutive patients (mean age, 70.3 ± 11.4 years; range, 44-86 years) with histologically proven, hypoattenuating liver metastases from CRC were retrospectively included in this IRB-approved study...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150042/response-to-letter-regarding-article-breast-strain-elastography-observer-variability-in-data-acquisition-and-interpretation
#18
LETTER
YanYan Song, JianQiao Zhou
No abstract text is available yet for this article.
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150041/early-onset-inflammatory-bowel-disease-what-the-radiologist-needs-to-know
#19
J L Barber, N Shah, T A Watson
Approximately 25% of Inflammatory Bowel Disease (IBD) patients present before the age of 18 years; early-onset IBD is defined as disease presenting before 10 years of age. Although early-onset disease is rare, it presents a particular challenge both in terms of treatment and diagnosis. There is a strong genetic component to these diseases and it is now possible to identify specific genetic mutations associated with certain patterns of early-onset IBD. All of these children require specific clinical work-up that is often performed at specialist centres...
September 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/30150040/the-extracapsular-cystic-sign-in-pancreatic-serous-cystic-neoplasms-a-clinicopathologic-study-of-177-patients-with-cystic-pancreatic-lesions
#20
Hai-Yan Chen, Jin Zhao, Yuan-Fei Lu, Sang-Ying Lv, Jie-Yu Chen, Yao Pan, Dan Shi, Xiu-Fang Xu, Ri-Sheng Yu
OBJECTIVE: To assess a new imaging feature that we have named the extracapsular cystic sign which can make a constructive contribution towards differentiating serous cystic neoplasms (SCNs) from other pancreatic cystic lesions. MATERIAL AND METHODS: We retrospectively reviewed 177 CTs/MRIs of patients who underwent pancreatic resection of cystic lesions at two institutions from January 2011/2013, to September 2017. For each patient, demographic information, clinical presentation, especially imaging features were carefully investigated by two experienced abdominal radiologists, retrospectively...
September 2018: European Journal of Radiology
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