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European Radiology

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https://www.readbyqxmd.com/read/30232515/left-ventricular-extracellular-volume-fraction-and-atrioventricular-interaction-in-hypertension
#1
Jonathan C L Rodrigues, Tamas Erdei, Amardeep Ghosh Dastidar, Gergley Szantho, Amy E Burchell, Laura E K Ratcliffe, Emma C Hart, Angus K Nightingale, Julian F R Paton, Nathan E Manghat, Mark C K Hamilton
OBJECTIVES: Left atrial enlargement (LAE) predicts cardiovascular morbidity and mortality. Impaired LA function also confers poor prognosis. This study aimed to determine whether left ventricular (LV) interstitial fibrosis is associated with LAE and LA impairment in systemic hypertension. METHODS: Following informed written consent, a prospective observational study of 86 hypertensive patients (49 ± 15 years, 53% male, office SBP 168 ± 30 mmHg, office DBP 97 ± 4 mmHg) and 20 normotensive controls (48 ± 13 years, 55% male, office SBP 130 ± 13 mmHg, office DBP 80 ± 11 mmHg) at 1...
September 19, 2018: European Radiology
https://www.readbyqxmd.com/read/30229271/background-parenchymal-enhancement-in-pregnancy-associated-breast-cancer-a-hindrance-to-diagnosis
#2
Jana Taron, Sabrina Fleischer, Heike Preibsch, Konstantin Nikolaou, Ines Gruber, Sonja Bahrs
PURPOSE: The purpose of this study is to investigate the detectability of pregnancy-associated breast cancer (PABC) in lactating glandular tissue on magnetic resonance imaging (MRI) by using pre- and post-contrast acquisitions and their derived postprocessed images and compare these results to ultrasound (US) and mammography (MG). MATERIALS AND METHODS: We reviewed the electronic database for women with PABC and existing breast MRI. MR images (T2-weighted short inversion-recovery sequence [STIR], dynamic contrast-enhanced T1-weighted gradient echo sequence and postprocessed subtraction images [early post-contrast minus pre-contrast]) were retrospectively evaluated (image quality, parenchymal/tumour enhancement kintetics, tumour size and additional lesions)...
September 18, 2018: European Radiology
https://www.readbyqxmd.com/read/30229270/quantitative-assessment-of-mesorectal-fat-new-prognostic-biomarker-in-patients-with-mid-to-lower-rectal-cancer
#3
Jiyoung Yoon, Yong Eun Chung, Joon Seok Lim, Myeong-Jin Kim
OBJECTIVES: To investigate the impact of mesorectal fat area (MFA) on oncologic outcomes in patients with mid-to-lower rectal cancer who received curative-intent surgery. METHODS: Patients with mid-to-lower rectal cancer who underwent preoperative abdominopelvic computed tomography (CT) and curative-intent surgery in 2011 were divided into two groups by tumour recurrence (group A) or no recurrence (group B) during a 5-year follow-up. Visceral fat area (VFA) and MFA were measured on preoperative CT and cutoff values were calculated using the Youden index...
September 18, 2018: European Radiology
https://www.readbyqxmd.com/read/30225600/combining-non-contrast-and-dual-energy-ct-improves-diagnosis-of-early-gout
#4
Seul Ki Lee, Joon-Yong Jung, Won-Hee Jee, Jennifer Jooha Lee, Sung-Hwan Park
OBJECTIVES: To determine the incremental value of non-contrast CT (NCCT) on dual-energy CT (DECT) in symptomatic first metatarsophalangeal (MTP) joints in early gout. METHODS: One hundred and fifteen painful joints were consecutively enrolled and gout was diagnosed based on the 2015 EULAR/ACR criteria and/or arthrocentesis. Two readers independently evaluated DECT alone and combined NCCT and DECT (NCCT+DECT) based on four semiquantitative scales. Sensitivities and specificities were compared using McNemar's test...
September 17, 2018: European Radiology
https://www.readbyqxmd.com/read/30209593/c-arm-computed-tomography-cact-guided-balloon-pulmonary-angioplasty-bpa-evaluation-of-patient-safety-and-peri-and-post-procedural-complications
#5
Sabine K Maschke, Jan B Hinrichs, Julius Renne, Thomas Werncke, Hinrich M B Winther, Kristina I Ringe, Karen M Olsson, Marius M Hoeper, Frank K Wacker, Bernhard C Meyer
AIM: To assess the frequency and severity of complications of balloon pulmonary angioplasty (BPA) using C-arm computed tomography (CACT) guidance. MATERIAL AND METHODS: 266 consecutive interventions in 67 patients (42 females, mean age 66 ± 13 years) were included. Selective CACT was acquired prior to the intervention for three-dimensional (3D) guidance and to select appropriate balloon size based on the measured vessel diameter. Complications during and after the procedure, the need for further interventions and the impact on patient safety and outcome were assessed and categorised according to the SIR Classification System to Complications by Outcome (Grade A-F)...
September 12, 2018: European Radiology
https://www.readbyqxmd.com/read/30209592/development-and-validation-of-an-ultrasound-based-nomogram-to-improve-the-diagnostic-accuracy-for-malignant-thyroid-nodules
#6
Bao-Liang Guo, Fu-Sheng Ouyang, Li-Zhu Ouyang, Zi-Wei Liu, Shao-Jia Lin, Wei Meng, Xi-Yi Huang, Hai-Xiong Chen, Shao-Ming Yang, Qiu-Gen Hu
OBJECTIVES: The aim of this study was to develop an ultrasound-based nomogram to improve the diagnostic accuracy of the identification of malignant thyroid nodules. METHODS: A total of 1675 histologically proven thyroid nodules (1169 benign, 506 malignant) were included in this study. The nodules were grouped into the training dataset (n = 700), internal validation dataset (n = 479), or external validation dataset (n = 496). The grayscale ultrasound features included the nodule size, shape, aspect ratio, echogenicity, margins, and calcification pattern...
September 12, 2018: European Radiology
https://www.readbyqxmd.com/read/30209591/comparison-of-full-iodine-conventional-ct-and-half-iodine-virtual-monochromatic-imaging-advantages-and-disadvantages
#7
Haruto Sugawara, Shigeru Suzuki, Yoshiaki Katada, Takuya Ishikawa, Rika Fukui, Yuzo Yamamoto, Osamu Abe
PURPOSE: To compare image quality of abdominal arteries between full-iodine-dose conventional CT and half-iodine-dose virtual monochromatic imaging (VMI). MATERIALS AND METHODS: We retrospectively evaluated images of 21 patients (10 men, 11 women; mean age, 73.9 years) who underwent both full-iodine (600 mg/kg) conventional CT and half-iodine (300 mg/kg) VMI. For each patient, we measured and compared CT attenuation and the contrast-to-noise ratio (CNR) of the aorta, celiac artery, and superior mesenteric artery (SMA)...
September 12, 2018: European Radiology
https://www.readbyqxmd.com/read/30194473/comparison-of-radiographs-tomosynthesis-and-ct-with-metal-artifact-reduction-for-the-detection-of-hip-prosthetic-loosening
#8
Romain Gillet, Pedro Teixeira, Chloé Bonarelli, Henry Coudane, François Sirveaux, Mathias Louis, Alain Blum
OBJECTIVES: To evaluate the diagnostic performance of digital tomosynthesis (DTS) for the diagnosis of hip prosthesis loosening (PL) compared with conventional radiographs and CT with metal artifact reduction (CT-MAR). METHODS: Forty-nine patients with painful hip prosthesis were prospectively included and underwent anteroposterior and lateral radiographs, anteroposterior DTS and CT-MAR of the hip. This study was approved by the local ethics committee, and all patients signed an informed consent form...
September 7, 2018: European Radiology
https://www.readbyqxmd.com/read/30194472/inter-observer-variability-of-manual-contour-delineation-of-structures-in-ct
#9
Leo Joskowicz, D Cohen, N Caplan, J Sosna
PURPOSE: To quantify the inter-observer variability of manual delineation of lesions and organ contours in CT to establish a reference standard for volumetric measurements for clinical decision making and for the evaluation of automatic segmentation algorithms. MATERIALS AND METHODS: Eleven radiologists manually delineated 3193 contours of liver tumours (896), lung tumours (1085), kidney contours (434) and brain hematomas (497) on 490 slices of clinical CT scans...
September 7, 2018: European Radiology
https://www.readbyqxmd.com/read/30187117/carotid-stiffness-and-atherosclerotic-risk-non-invasive-quantification-with-ultrafast-ultrasound-pulse-wave-velocity
#10
Zheng-Qiu Zhu, Ling-Shan Chen, Han Wang, Fu-Ming Liu, Yun Luan, Lin-Lin Wu, Niu Liu, Pin Wang, Hui Huang
OBJECTIVES: To evaluate the value of ultrafast pulse wave velocity (ufPWV) for the quantitative assessment of carotid stiffness and its associated with atherosclerosis (AS) risk. METHODS: The present study included 233 patients with hyperlipoidaemia (AS risk group) and 114 healthy adults as the control group. The carotid (n = 694) intima-media thickness (cIMT), pulse wave velocity-beginning of systole (PWV-BS) and pulse wave velocity-end of systole (PWV-ES) were measured on sample images...
September 5, 2018: European Radiology
https://www.readbyqxmd.com/read/30178144/ultrashort-time-to-echo-quantitative-magnetic-resonance-imaging-of-the-triangular-fibrocartilage-differences-in-position
#11
Akitaka Fujisaki, Takatoshi Aoki, Hidekuni Narimatsu, Chie Kuwahara, Atsushi Nozaki, Kunitaka Menuki, Akinori Sakai, Yukunori Korogi
PURPOSE: To compare T2* values of the triangular fibrocartilage (TFC) obtained by ultrashort time-to-echo (UTE) techniques at the neutral position, ulnar flexion of the wrist, and pronation of the forearm. MATERIALS AND METHODS: MR imaging was performed in ten healthy volunteers with a 3-T MR system by using an eight-channel knee coil. Coronal wrist T2* maps from three-dimensional cone UTE pulse sequences were obtained at the neutral, ulnar flexion, and pronation positions (TR: 19 ms, TE: 0...
September 3, 2018: European Radiology
https://www.readbyqxmd.com/read/30178143/multiparametric-ultrasomics-of-significant-liver-fibrosis-a-machine-learning-based-analysis
#12
Wei Li, Yang Huang, Bo-Wen Zhuang, Guang-Jian Liu, Hang-Tong Hu, Xin Li, Jin-Yu Liang, Zhu Wang, Xiao-Wen Huang, Chu-Qing Zhang, Si-Min Ruan, Xiao-Yan Xie, Ming Kuang, Ming-De Lu, Li-Da Chen, Wei Wang
OBJECTIVE: To assess significant liver fibrosis by multiparametric ultrasomics data using machine learning. MATERIALS AND METHODS: This prospective study consisted of 144 patients with chronic hepatitis B. Ultrasomics-high-throughput quantitative data from ultrasound imaging of liver fibrosis-were generated using conventional radiomics, original radiofrequency (ORF) and contrast-enhanced micro-flow (CEMF) features. Three categories of features were explored using pairwise correlation and hierarchical clustering...
September 3, 2018: European Radiology
https://www.readbyqxmd.com/read/30171360/tace-with-degradable-starch-microspheres-dsm-tace-as-second-line-treatment-in-hcc-patients-dismissing-or-ineligible-for-sorafenib
#13
Roberto Iezzi, Maurizio Pompili, Emanuele Rinninella, Eleonora Annicchiarico, Matteo Garcovich, Lucia Cerrito, Francesca Ponziani, AnnaMaria De Gaetano, Massimo Siciliano, Michele Basso, Maria Assunta Zocco, GianLodovico Rapaccini, Alessandro Posa, Francesca Carchesio, Marco Biolato, Felice Giuliante, Antonio Gasbarrini, Riccardo Manfredi
OBJECTIVES: To date, there is no approved second-line treatment for patients dismissing sorafenib or ineligible for this treatment, so it would be useful to find an effective alternative treatment option. The aim of our study was to evaluate safety, feasibility and effectiveness of transarterial chemoembolisation with degradable starch microspheres (DSM-TACE) in the treatment of patients with advanced hepatocellular carcinoma (HCC) dismissing or ineligible for multikinase-inhibitor chemotherapy administration (sorafenib) due to unbearable side effects or clinical contraindications...
August 31, 2018: European Radiology
https://www.readbyqxmd.com/read/30167812/clear-cell-renal-cell-carcinoma-machine-learning-based-quantitative-computed-tomography-texture-analysis-for-prediction-of-fuhrman-nuclear-grade
#14
Ceyda Turan Bektas, Burak Kocak, Aytul Hande Yardimci, Mehmet Hamza Turkcanoglu, Ugur Yucetas, Sevim Baykal Koca, Cagri Erdim, Ozgur Kilickesmez
OBJECTIVE: To evaluate the performance of quantitative computed tomography (CT) texture analysis using different machine learning (ML) classifiers for discriminating low and high nuclear grade clear cell renal cell carcinomas (cc-RCCs). MATERIALS AND METHODS: This retrospective study included 53 patients with pathologically proven 54 cc-RCCs (31 low-grade [grade 1 or 2]; 23 high-grade [grade 3 or 4]). In one patient, two synchronous cc-RCCs were included in the analysis...
August 30, 2018: European Radiology
https://www.readbyqxmd.com/read/30167811/mr-imaging-based-fractal-analysis-for-differentiating-primary-cns-lymphoma-and-glioblastoma
#15
Shuai Liu, Xing Fan, Chuanbao Zhang, Zheng Wang, Shaowu Li, Yinyan Wang, Xiaoguang Qiu, Tao Jiang
OBJECTIVES: The aim of this study was to differentiate primary central nervous system lymphoma (PCNSL) from glioblastomas (GBM) using the fractal analysis of conventional MRI data. MATERIALS AND METHODS: Sixty patients with PCNSL and 107 patients with GBM with MRI data available were enrolled. Fractal dimension (FD) and lacunarity values of the tumour region were calculated using fractal analysis. A predictive model combining fractal parameters and anatomical characteristics was built using logistic regression...
August 30, 2018: European Radiology
https://www.readbyqxmd.com/read/30167810/correction-to-patient-dose-reference-levels-in-surgery-a-multicenter-study
#16
J Greffier, C Etard, O Mares, F Pereira, D Defez, C Duverger, P Branchereau, J P Beregi, R Coulomb, A Larbi
The original version of this article, published on 01 August 2018, unfortunately contained two mistakes.
August 30, 2018: European Radiology
https://www.readbyqxmd.com/read/30159623/accessory-cavitated-uterine-mass-mri-features-and-surgical-correlations-of-a-rare-but-under-recognised-entity
#17
N Peyron, E Jacquemier, M Charlot, M Devouassoux, D Raudrant, F Golfier, P Rousset
OBJECTIVES: To describe MRI features of accessory cavitated uterine mass (ACUM) with surgical correlations. METHODS: Eleven young women with an ACUM at pathology underwent preoperative pelvic MRI. Two experienced radiologists retrospectively analysed MR images in consensus to determine the lesion location within the uterus, its size, morphology (shape and boundaries), and structure reporting the signal and enhancement of its different parts compared to myometrium...
August 29, 2018: European Radiology
https://www.readbyqxmd.com/read/30159622/correlation-of-native-t1-mapping-with-right-ventricular-function-and-pulmonary-haemodynamics-in-patients-with-chronic-thromboembolic-pulmonary-hypertension-before-and-after-balloon-pulmonary-angioplasty
#18
F C Roller, S Kriechbaum, A Breithecker, C Liebetrau, M Haas, C Schneider, A Rolf, S Guth, E Mayer, C Hamm, G A Krombach, C B Wiedenroth
OBJECTIVES: The aim of this study was to assess native T1 mapping in patients with inoperable chronic thromboembolic pulmonary hypertension (CTEPH) before and 6 months after balloon pulmonary angioplasty (BPA) and compare the results with right heart function and pulmonary haemodynamics. METHODS: Magnetic resonance imaging at 1.5 T and right heart catheterisation were performed in 21 consecutive inoperable CTEPH patients before and 6 months after BPA. T1 values were measured within the septal myocardium, the upper and lower right ventricular insertion points, and the lateral wall at the basal short-axis section...
August 29, 2018: European Radiology
https://www.readbyqxmd.com/read/30159621/hepatocellular-carcinoma-ct-texture-analysis-as-a-predictor-of-survival-after-surgical-resection
#19
Lucie Brenet Defour, Sébastien Mulé, Arthur Tenenhaus, Tullio Piardi, Daniele Sommacale, Christine Hoeffel, Gérard Thiéfin
OBJECTIVES: To determine whether image texture parameters analysed on pre-operative contrast-enhanced computed tomography (CT) can predict overall survival and recurrence-free survival in patients with hepatocellular carcinoma (HCC) treated by surgical resection. METHODS: We retrospectively included all patients operated for HCC who had liver contrast-enhanced CT within 3 months prior to treatment in our centre between 2010 and 2015. The following texture parameters were evaluated on late-arterial and portal-venous phases: mean grey-level, standard deviation, kurtosis, skewness and entropy...
August 29, 2018: European Radiology
https://www.readbyqxmd.com/read/30159620/a-randomized-controlled-trial-of-digital-breast-tomosynthesis-versus-digital-mammography-in-population-based-screening-in-bergen-interim-analysis-of-performance-indicators-from-the-to-be-trial
#20
Hildegunn S Aase, Åsne S Holen, Kristin Pedersen, Nehmat Houssami, Ingfrid S Haldorsen, Sofie Sebuødegård, Berit Hanestad, Solveig Hofvind
OBJECTIVES: To describe a randomized controlled trial (RCT) of digital breast tomosynthesis including synthesized two-dimensional mammograms (DBT) versus digital mammography (DM) in a population-based screening program for breast cancer and to compare selected secondary screening outcomes for the two techniques. METHODS: This RCT, performed in Bergen as part of BreastScreen Norway, was approved by the Regional Committees for Medical Health Research Ethics. All screening attendees in Bergen were invited to participate, of which 89% (14,274/15,976) concented during the first year, and were randomized to DBT (n = 7155) or DM (n = 7119)...
August 29, 2018: European Radiology
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