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European Radiology

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https://www.readbyqxmd.com/read/27913913/improved-image-quality-in-abdominal-ct-in-patients-who-underwent-treatment-for-hepatocellular-carcinoma-with-small-metal-implants-using-a-raw-data-based-metal-artifact-reduction-algorithm
#1
Keitaro Sofue, Takeshi Yoshikawa, Yoshiharu Ohno, Noriyuki Negi, Hiroyasu Inokawa, Naoki Sugihara, Kazuro Sugimura
OBJECTIVES: To determine the value of a raw data-based metal artifact reduction (SEMAR) algorithm for image quality improvement in abdominal CT for patients with small metal implants. METHODS: Fifty-eight patients with small metal implants (3-15 mm in size) who underwent treatment for hepatocellular carcinoma were imaged with CT. CT data were reconstructed by filtered back projection with and without SEMAR algorithm in axial and coronal planes. To evaluate metal artefact reduction, mean CT number (HU and SD) and artefact index (AI) values within the liver were calculated...
December 2, 2016: European Radiology
https://www.readbyqxmd.com/read/27900505/subsequent-haemorrhage-in-children-with-untreated-brain-arteriovenous-malformation-higher-risk-with-unbalanced-inflow-and-outflow-angioarchitecture
#2
Li Ma, Xiao-Lin Chen, Yu Chen, Chun-Xue Wu, Jun Ma, Yuan-Li Zhao
OBJECTIVES: Children with brain arteriovenous malformations (bAVMs) are at risk of life-threatening haemorrhage in their early lives. Our aim was to analyse various angioarchitectural features of bAVM to predict the risk of subsequent haemorrhage during follow-up in children. METHODS: We identified all consecutive children admitted to our institution for bAVMs between July 2009 and September 2015. Children with at least 1 month of treatment-free follow-up after diagnosis were included in further analysis...
November 29, 2016: European Radiology
https://www.readbyqxmd.com/read/27896471/contrast-enhanced-spectral-mammography-vs-mammography-and-mri-clinical-performance-in-a-multi-reader-evaluation
#3
Eva M Fallenberg, Florian F Schmitzberger, Heba Amer, Barbara Ingold-Heppner, Corinne Balleyguier, Felix Diekmann, Florian Engelken, Ritse M Mann, Diane M Renz, Ulrich Bick, Bernd Hamm, Clarisse Dromain
OBJECTIVES: To compare the diagnostic performance of contrast-enhanced spectral mammography (CESM) to digital mammography (MG) and magnetic resonance imaging (MRI) in a prospective two-centre, multi-reader study. METHODS: One hundred seventy-eight women (mean age 53 years) with invasive breast cancer and/or DCIS were included after ethics board approval. MG, CESM and CESM + MG were evaluated by three blinded radiologists based on amended ACR BI-RADS criteria...
November 28, 2016: European Radiology
https://www.readbyqxmd.com/read/27896470/erratum-to-high-rates-of-clinically-relevant-incidental-findings-by-total-body-ct-scanning-in-trauma-patients-results-of-the-react-2-trial
#4
K Treskes, S A Bos, L F M Beenen, J C Sierink, M J R Edwards, B J A Beuker, G S R Muradin, J Hohmann, J S K Luitse, M W Hollmann, M G W Dijkgraaf, J C Goslings
No abstract text is available yet for this article.
November 28, 2016: European Radiology
https://www.readbyqxmd.com/read/27896469/ct-evaluation-after-neoadjuvant-folfirinox-chemotherapy-for-borderline-and-locally-advanced-pancreatic-adenocarcinoma
#5
Mathilde Wagner, Celia Antunes, Daniel Pietrasz, Christophe Cassinotto, Magaly Zappa, Antonio Sa Cunha, Oliver Lucidarme, Jean-Baptiste Bachet
AIM: To assess anatomic changes on computed tomography (CT) after neoadjuvant FOLFIRINOX (5-fluorouracil/leucovorin/irinotecan/oxaliplatin) chemotherapy for secondary resected borderline resectable (BR) and locally advanced (LA) pancreatic adenocarcinoma and their accuracy to predict resectability and pathological response. METHODS: Thirty-six patients with secondary resected BR/LA pancreatic adenocarcinoma after neoadjuvant FOLFIRINOX chemotherapy (± chemoradiotherapy) were retrospectively included...
November 28, 2016: European Radiology
https://www.readbyqxmd.com/read/27885414/clinical-implementation-of-an-emergency-department-coronary-computed-tomographic-angiography-protocol-for-triage-of-patients-with-suspected-acute-coronary-syndrome
#6
Brian B Ghoshhajra, Richard A P Takx, Pedro V Staziaki, Harshna Vadvala, Phillip Kim, Tomas G Neilan, Nandini M Meyersohn, Daniel Bittner, Sumbal A Janjua, Thomas Mayrhofer, Jeffrey L Greenwald, Quyhn A Truong, Suhny Abbara, David F M Brown, James L Januzzi, Sanjeev Francis, John T Nagurney, Udo Hoffmann
OBJECTIVES: To evaluate the efficiency and safety of emergency department (ED) coronary computed tomography angiography (CTA) during a 3-year clinical experience. METHODS: Single-center registry of coronary CTA in consecutive ED patients with suspicion of acute coronary syndrome (ACS). The primary outcome was efficiency of coronary CTA defined as the length of hospitalization. Secondary endpoints of safety were defined as the rate of downstream testing, normalcy rates of invasive coronary angiography (ICA), absence of missed ACS, and major adverse cardiac events (MACE) during follow-up, and index radiation exposure...
November 24, 2016: European Radiology
https://www.readbyqxmd.com/read/27882427/improved-mdct-monitoring-of-pelvic-myeloma-bone-disease-through-the-use-of-a-novel-longitudinal-bone-subtraction-post-processing-algorithm
#7
Marius Horger, Wolfgang M Thaiss, Hendrik Ditt, Katja Weisel, Jan Fritz, Konstantin Nikolaou, Shu Liao, Christopher Kloth
PURPOSE: To evaluate the diagnostic performance of a novel CT post-processing software that generates subtraction maps of baseline and follow-up CT examinations in the course of myeloma bone lesions. MATERIALS AND METHODS: This study included 61 consecutive myeloma patients who underwent repeated whole-body reduced-dose MDCT at our institution between November 2013 and June 2015. CT subtraction maps classified a progressive disease (PD) vs. stable disease (SD)/remission...
November 23, 2016: European Radiology
https://www.readbyqxmd.com/read/27882426/dual-energy-ct-of-the-brain-comparison-between-dect-angiography-derived-virtual-unenhanced-images-and-true-unenhanced-images-in-the-detection-of-intracranial-haemorrhage
#8
Matteo Bonatti, Fabio Lombardo, Giulia A Zamboni, Patrizia Pernter, Roberto Pozzi Mucelli, Giampietro Bonatti
OBJECTIVE: To evaluate the diagnostic performance of virtual non-contrast (VNC) images in detecting intracranial haemorrhages (ICHs). METHODS: Sixty-seven consecutive patients with and 67 without ICH who underwent unenhanced brain CT and DECT angiography were included. Two radiologists independently evaluated VNC and true non-contrast (TNC) images for ICH presence and type. Inter-observer agreement for VNC and TNC image evaluation was calculated. Sensitivity and specificity of VNC images for ICH detection were calculated using Fisher's exact test...
November 23, 2016: European Radiology
https://www.readbyqxmd.com/read/27882425/assessment-of-regional-emphysema-air-trapping-and-xenon-ventilation-using-dual-energy-computed-tomography-in-chronic-obstructive-pulmonary-disease-patients
#9
Sang Min Lee, Joon Beom Seo, Hye Jeon Hwang, Namkug Kim, Sang Young Oh, Jae Seung Lee, Sei Won Lee, Yeon-Mok Oh, Tae Hoon Kim
OBJECTIVES: To compare the parenchymal attenuation change between inspiration/expiration CTs with dynamic ventilation change between xenon wash-in (WI) inspiration and wash-out (WO) expiration CTs. METHODS: 52 prospectively enrolled COPD patients underwent xenon ventilation dual-energy CT during WI and WO periods and pulmonary function tests (PFTs). The parenchymal attenuation parameters (emphysema index (EI), gas-trapping index (GTI) and air-trapping index (ATI)) and xenon ventilation parameters (xenon in WI (Xe-WI), xenon in WO (Xe-WO) and xenon dynamic (Xe-Dyna)) of whole lung and three divided areas (emphysema, hyperinflation and normal) were calculated on virtual non-contrast images and ventilation images...
November 23, 2016: European Radiology
https://www.readbyqxmd.com/read/27878584/altered-intrinsic-brain-activity-after-chemotherapy-in-patients-with-gastric-cancer-a-preliminary-study
#10
Hyun Gi Kim, Na-Young Shin, Yunjin Bak, Kyung Ran Kim, Young-Chul Jung, Kyunghwa Han, Seung-Koo Lee, Soo Mee Lim
OBJECTIVES: To characterize the pattern of altered intrinsic brain activity in gastric cancer patients after chemotherapy (CTx). METHODS: Patients before and after CTx (n = 14) and control subjects (n = 11) underwent resting-state functional MRI (rsfMRI) at baseline and 3 months after CTx. Regional homogeneity (ReHo), amplitude of low-frequency fluctuation (ALFF), and fractional ALFF (fALFF) were calculated and compared between the groups using the two-sample t test...
November 23, 2016: European Radiology
https://www.readbyqxmd.com/read/27878373/restrictive-allograft-syndrome-after-lung-transplantation-new-radiological-insights
#11
Adriana Dubbeldam, Caroline Barthels, Johan Coolen, Johny A Verschakelen, Stijn E Verleden, Robin Vos, Geert M Verleden, Walter De Wever
OBJECTIVES: To describe the CT changes in patients with restrictive allograft syndrome (RAS) after lung transplantation, before and after clinical diagnosis. METHODS: This retrospective study included 22 patients with clinical diagnosis of RAS. Diagnosis was based on a combination of forced expiratory volume (FEV1) decline (≥20 %) and total lung capacity (TLC) decline (≥10 %). All available CT scans after transplantation were analyzed for the appearance and evolution of lung abnormalities...
November 22, 2016: European Radiology
https://www.readbyqxmd.com/read/27864607/computed-tomography-versus-invasive-coronary-angiography-design-and-methods-of-the-pragmatic-randomised-multicentre-discharge-trial
#12
Adriane E Napp, Robert Haase, Michael Laule, Georg M Schuetz, Matthias Rief, Henryk Dreger, Gudrun Feuchtner, Guy Friedrich, Miloslav Špaček, Vojtěch Suchánek, Klaus Fuglsang Kofoed, Thomas Engstroem, Stephen Schroeder, Tanja Drosch, Matthias Gutberlet, Michael Woinke, Pál Maurovich-Horvat, Béla Merkely, Patrick Donnelly, Peter Ball, Jonathan D Dodd, Martin Quinn, Luca Saba, Maurizio Porcu, Marco Francone, Massimo Mancone, Andrejs Erglis, Ligita Zvaigzne, Antanas Jankauskas, Gintare Sakalyte, Tomasz Harań, Malgorzata Ilnicka-Suckiel, Nuno Bettencourt, Vasco Gama-Ribeiro, Sebastian Condrea, Imre Benedek, Nada Čemerlić Adjić, Oto Adjić, José Rodriguez-Palomares, Bruno Garcia Del Blanco, Giles Roditi, Colin Berry, Gershan Davis, Erica Thwaite, Juhani Knuuti, Mikko Pietilä, Cezary Kępka, Mariusz Kruk, Radosav Vidakovic, Aleksandar N Neskovic, Ignacio Díez, Iñigo Lecumberri, Jacob Geleijns, Christine Kubiak, Anke Strenge-Hesse, The-Hoang Do, Felix Frömel, Iñaki Gutiérrez-Ibarluzea, Gaizka Benguria-Arrate, Hans Keiding, Christoph Katzer, Jacqueline Müller-Nordhorn, Nina Rieckmann, Mario Walther, Peter Schlattmann, Marc Dewey
OBJECTIVES: More than 3.5 million invasive coronary angiographies (ICA) are performed in Europe annually. Approximately 2 million of these invasive procedures might be reduced by noninvasive tests because no coronary intervention is performed. Computed tomography (CT) is the most accurate noninvasive test for detection and exclusion of coronary artery disease (CAD). To investigate the comparative effectiveness of CT and ICA, we designed the European pragmatic multicentre DISCHARGE trial funded by the 7th Framework Programme of the European Union (EC-GA 603266)...
November 18, 2016: European Radiology
https://www.readbyqxmd.com/read/27858213/prognostic-relevance-of-gemistocytic-grade-ii-astrocytoma-gemistocytic-component-and-mr-imaging-features-compared-to-non-gemistocytic-grade-ii-astrocytoma
#13
Young Jin Heo, Ji Eun Park, Ho Sung Kim, Ji Ye Lee, Soo Jeong Nam, Seung Chai Jung, Choong Gon Choi, Sang Joon Kim
OBJECTIVES: To determine if gemistocytic grade II astrocytoma (GemA) and its MR imaging characteristics are associated with a shorter time-to-progression (TTP) compared with non-gemistocytic grade II astrocytoma (non-GemA). MATERIALS AND METHODS: We enrolled 78 patients who were followed up more than 5 years (29 pathologically proven GemA and 49 non-GemA) during a 10-year period. Contrast-enhanced T1-weighted, diffusion-weighted imaging (DWI), dynamic susceptibility contrast (DSC), and MR spectroscopy (MRS) and clinical data were retrospectively reviewed...
November 17, 2016: European Radiology
https://www.readbyqxmd.com/read/27858212/hepatosplenic-volumetric-assessment-at-mdct-for-staging-liver-fibrosis
#14
Perry J Pickhardt, Kyle Malecki, Oliver F Hunt, Claire Beaumont, John Kloke, Timothy J Ziemlewicz, Meghan G Lubner
PURPOSE: To investigate hepatosplenic volumetry at MDCT for non-invasive prediction of hepatic fibrosis. METHODS: Hepatosplenic volume analysis in 624 patients (mean age, 48.8 years; 311 M/313 F) at MDCT was performed using dedicated software and compared against pathological fibrosis stage (F0 = 374; F1 = 48; F2 = 40; F3 = 65; F4 = 97). The liver segmental volume ratio (LSVR) was defined by Couinaud segments I-III over segments IV-VIII. All pre-cirrhotic fibrosis stages (METAVIR F1-F3) were based on liver biopsy within 1 year of MDCT...
November 17, 2016: European Radiology
https://www.readbyqxmd.com/read/27853813/radiation-injury-vs-recurrent-brain-metastasis-combining-textural-feature-radiomics-analysis-and-standard-parameters-may-increase-18-f-fet-pet-accuracy-without-dynamic-scans
#15
Philipp Lohmann, Gabriele Stoffels, Garry Ceccon, Marion Rapp, Michael Sabel, Christian P Filss, Marcel A Kamp, Carina Stegmayr, Bernd Neumaier, Nadim J Shah, Karl-Josef Langen, Norbert Galldiks
OBJECTIVES: We investigated the potential of textural feature analysis of O-(2-[(18)F]fluoroethyl)-L-tyrosine ((18)F-FET) PET to differentiate radiation injury from brain metastasis recurrence. METHODS: Forty-seven patients with contrast-enhancing brain lesions (n = 54) on MRI after radiotherapy of brain metastases underwent dynamic (18)F-FET PET. Tumour-to-brain ratios (TBRs) of (18)F-FET uptake and 62 textural parameters were determined on summed images 20-40 min post-injection...
November 16, 2016: European Radiology
https://www.readbyqxmd.com/read/27853812/ultrasound-guided-percutaneous-laser-ablation-of-unifocal-t1n0m0-papillary-thyroid-microcarcinoma-preliminary-results
#16
Wei Zhou, Shan Jiang, Weiwei Zhan, Jianqiao Zhou, Shangyan Xu, Lu Zhang
OBJECTIVES: To evaluate the efficacy and safety of percutaneous laser ablation (PLA) for unifocal T1N0M0 papillary thyroid microcarcinoma(PTMC). METHODS: A retrospective study was conducted in 30 patients with single PTMC which was diagnosed by fine-needle aspiration biopsy (FNAB). PLA was performed for proper time to achieve adequate ablation zones. The extent of ablation was assessed by contrast-enhanced ultrasound (CEUS) immediately and 7 days after PLA. Complications were recorded...
November 16, 2016: European Radiology
https://www.readbyqxmd.com/read/27847999/impact-of-iterative-reconstructions-on-objective-and-subjective-emphysema-assessment-with-computed-tomography-a-prospective-study
#17
Steve P Martin, Joanna Gariani, Anne-Lise Hachulla, Diomidis Botsikas, Dan Adler, Wolfram Karenovics, Christoph D Becker, Xavier Montet
OBJECTIVES: To prospectively evaluate the impact of iterative reconstruction (IR) algorithms on pulmonary emphysema assessment as compared to filtered back projection (FBP). METHODS: One hundred ten unenhanced chest CT examinations were obtained on two different scanners. Image reconstructions from a single acquisition were done with different levels of IR and compared with FBP on the basis of the emphysema index (EI), lung volume and voxel densities. Objective emphysema assessment was performed with 3D software provided by each manufacturer...
November 15, 2016: European Radiology
https://www.readbyqxmd.com/read/27844099/comparison-of-the-accuracy-of-us-guided-biopsy-of-breast-masses-performed-with-14-gauge-16-gauge-and-18-gauge-automated-cutting-needle-biopsy-devices-and-review-of-the-literature
#18
Monica L Huang, Kenneth Hess, Rosalind P Candelaria, Mohammad Eghtedari, Beatriz E Adrada, Nour Sneige, Bruno D Fornage
OBJECTIVE: To compare the diagnostic accuracy of ultrasound (US)-guided core needle biopsy (CNB) of breast masses performed with 14-gauge, 16-gauge and 18-gauge needles. METHODS: We retrospectively reviewed the charts of 1,112 patients who underwent US-guided breast CNB with 14-gauge, 16-gauge and 18-gauge needles. Cases with surgical excision or a minimum of 2 years of imaging follow-up were included. Rates of sample inadequacy, discordance with surgical or imaging findings and upgrade of DCIS to invasive cancer or high-risk lesion to in situ or invasive cancer were computed for each needle size...
November 14, 2016: European Radiology
https://www.readbyqxmd.com/read/27832312/penetration-and-distribution-of-gadolinium-based-contrast-agents-into-the-cerebrospinal-fluid-in-healthy-rats-a-potential-pathway-of-entry-into-the-brain-tissue
#19
Gregor Jost, Thomas Frenzel, Jessica Lohrke, Diana Constanze Lenhard, Shinji Naganawa, Hubertus Pietsch
OBJECTIVE: Signal hyperintensity on unenhanced MRI in certain brain regions has been reported after multiple administrations of some, but not all, gadolinium-based contrast agents (GBCAs). One potential initial pathway of GBCA entry into the brain, infiltration from blood into the cerebrospinal fluid (CSF), was systematically evaluated in this preclinical study. METHODS: GBCA infiltration and distribution in the CSF were investigated in healthy rats using repeated fluid-attenuated MRI up to 4 h after high-dose (1...
November 10, 2016: European Radiology
https://www.readbyqxmd.com/read/27832311/diagnostic-accuracy-of-transabdominal-high-resolution-us-for-staging-gallbladder-cancer-and-differential-diagnosis-of-neoplastic-polyps-compared-with-eus
#20
Jeong Sub Lee, Jung Hoon Kim, Yong Jae Kim, Ji Kon Ryu, Yong-Tae Kim, Jae Young Lee, Joon Koo Han
PURPOSE: To compare the diagnostic accuracy of transabdominal high-resolution ultrasound (HRUS) for staging gallbladder cancer and differential diagnosis of neoplastic polyps compared with endoscopic ultrasound (EUS) and pathology. MATERIALS AND METHODS: Among 125 patients who underwent both HRUS and EUS, we included 29 pathologically proven cancers (T1 = 7, T2 = 19, T3 = 3) including 15 polypoid cancers and 50 surgically proven polyps (neoplastic = 30, non-neoplastic = 20)...
November 10, 2016: European Radiology
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