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European Radiology

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https://www.readbyqxmd.com/read/28929333/late-iodine-enhancement-computed-tomography-with-image-subtraction-for-assessment-of-myocardial-infarction
#1
Yuki Tanabe, Teruhito Kido, Akira Kurata, Takanori Kouchi, Naoki Fukuyama, Takahiro Yokoi, Teruyoshi Uetani, Natsumi Yamashita, Masao Miyagawa, Teruhito Mochizuki
OBJECTIVE: To evaluate the feasibility of image subtraction in late iodine enhancement CT (LIE-CT) for assessment of myocardial infarction (MI). METHODS: A comprehensive cardiac CT protocol and late gadolinium enhancement MRI (LGE-MRI) was used to assess coronary artery disease in 27 patients. LIE-CT was performed after stress CT perfusion (CTP) and CT angiography. Subtraction LIE-CT was created by subtracting the mask volume of the left ventricle (LV) cavity from the original LIE-CT using CTP dataset...
September 19, 2017: European Radiology
https://www.readbyqxmd.com/read/28929243/discrimination-between-benign-and-malignant-breast-lesions-using-volumetric-quantitative-dynamic-contrast-enhanced-mr-imaging
#2
Ziliang Cheng, Zhuo Wu, Guangzi Shi, Zhilong Yi, Mingwei Xie, Weike Zeng, Chao Song, Chushan Zheng, Jun Shen
OBJECTIVE: To determine the diagnostic performance of volumetric quantitative dynamic contrast-enhanced MRI (qDCE-MRI) in differentiation between malignant and benign breast lesions. METHODS: DCE-MRI was performed in 124 patients with 136 breast lesions. Quantitative pharmacokinetic parameters K(trans), Kep, Ve, Vp and semi-quantitative parameters TTP, MaxCon, MaxSlope, AUC were obtained by using a two-compartment extended Tofts model and three-dimensional volume of interest...
September 19, 2017: European Radiology
https://www.readbyqxmd.com/read/28929225/prediction-of-survival-by-texture-based-automated-quantitative-assessment-of-regional-disease-patterns-on-ct-in-idiopathic-pulmonary-fibrosis
#3
Sang Min Lee, Joon Beom Seo, Sang Young Oh, Tae Hoon Kim, Jin Woo Song, Sang Min Lee, Namkug Kim
OBJECTIVES: To retrospectively investigate whether the baseline extent and 1-year change in regional disease patterns on CT can predict survival of patients with idiopathic pulmonary fibrosis (IPF). METHODS: A total of 144 IPF patients with CT scans at the time of diagnosis and 1 year later were included. The extents of five regional disease patterns were quantified using an in-house texture-based automated system. The fibrosis score was defined as the sum of the extent of honeycombing and reticular opacity...
September 19, 2017: European Radiology
https://www.readbyqxmd.com/read/28929210/discrimination-of-malignant-versus-benign-mediastinal-lymph-nodes-using-diffusion-mri-with-an-ivim-model
#4
Li-Ping Qi, Wan-Pu Yan, Ke-Neng Chen, Zheng Zhong, Xiao-Ting Li, Kejia Cai, Ying-Shi Sun, Xiaohong Joe Zhou
OBJECTIVES: To investigate the value of an intravoxel incoherent motion (IVIM) diffusion model for discriminating malignant versus benign mediastinal lymph nodes (MLN). METHODS: Thirty-five subjects with enlarged MLN were scanned at 1.5 Tesla. Diffusion-weighted imaging was performed with eight b-values. IVIM parameters D, D*, and f, as well as apparent diffusion coefficient (ADC) from a mono-exponential model were obtained. 91 nodes (49 malignant and 42 benign) were analysed with pathologic (n=90) or radiologic (n=1) confirmations...
September 19, 2017: European Radiology
https://www.readbyqxmd.com/read/28900662/erratum-to-tubulin-related-cerebellar-dysplasia-definition-of-a-distinct-pattern-of-cerebellar-malformation
#5
Romina Romaniello, Filippo Arrigoni, Elena Panzeri, Andrea Poretti, Alessia Micalizzi, Andrea Citterio, Maria Francesca Bedeschi, Angela Berardinelli, Raffaella Cusmai, Stefano D'Arrigo, Alessandro Ferraris, Annette Hackenberg, Alma Kuechler, Margherita Mancardi, Sara Nuovo, Barbara Oehl-Jaschkowitz, Andrea Rossi, Sabrina Signorini, Frank Tüttelmann, Dagmar Wahl, Ute Hehr, Eugen Boltshauser, Maria Teresa Bassi, Enza Maria Valente, Renato Borgatti
No abstract text is available yet for this article.
September 12, 2017: European Radiology
https://www.readbyqxmd.com/read/28894937/gadoxetate-disodium-induced-tachypnoea-and-the-effect-of-dilution-method-a-proof-of-concept-study-in-mice
#6
Hiroyuki Akai, Koichiro Yasaka, Masanori Nojima, Akira Kunimatsu, Yusuke Inoue, Osamu Abe, Kuni Ohtomo, Shigeru Kiryu
OBJECTIVES: To directly investigate the rapid respiratory effect of gadoxetate disodium in an experimental study using mice. METHODS: After confirming the steady respiratory state under general anaesthesia, eight mice were injected with all test agents in the following order: phosphate-buffered saline (A, control group), 1.25 mmol/kg of gadoteridol (B) or gadopentetate dimeglumine (C), or 0.31 mmol/kg of gadoxetate disodium (D, E). The experimenter was not blinded to the agents...
September 11, 2017: European Radiology
https://www.readbyqxmd.com/read/28894936/thermal-ablation-of-thyroid-nodules-are-radiofrequency-ablation-microwave-ablation-and-high-intensity-focused-ultrasound-equally-safe-and-effective-methods
#7
Yücel Korkusuz, Daniel Gröner, Natascha Raczynski, Oleg Relin, Yasmina Kingeter, Frank Grünwald, Christian Happel
OBJECTIVES: This study compares volume reduction of benign thyroid nodules three months after Radiofrequency Ablation (RFA), Microwave Ablation (MWA) or High Intensity Focused Ultrasound (HIFU) to evaluate which of these methods is the most effective and safe alternative to thyroidectomy or radioiodine therapy. MATERIAL AND METHODS: Ninety-four patients (39 male, 55 female) with a total of 118 benign, symptomatic thyroid nodules were divided into three subgroups...
September 11, 2017: European Radiology
https://www.readbyqxmd.com/read/28894933/particulate-versus-non-particulate-corticosteroids-for-transforaminal-nerve-root-blocks-comparison-of-outcomes-in-494-patients-with-lumbar-radiculopathy
#8
Susanne Bensler, Reto Sutter, Christian W A Pfirrmann, Cynthia K Peterson
PURPOSE: We set out to compare outcomes in CT-guided lumbar transforaminal nerve root block patients receiving either particulate or non-particulate corticosteroids. MATERIALS AND METHODS: This was a retrospective comparative effectiveness outcomes study on two cohorts of lumbar radiculopathy patients. 321 received particulate and 173 non-particulate corticosteroids at CT-guided transforaminal lumbar nerve root injections. The particulate steroid was used from October 2009 until May 2014 and the non-particulate steroid was used from May 2014...
September 11, 2017: European Radiology
https://www.readbyqxmd.com/read/28894927/how-to-differentiate-acute-pelvic-inflammatory-disease-from-acute-appendicitis-a-decision-tree-based-on-ct-findings
#9
Kim El Hentour, Ingrid Millet, Emmanuelle Pages-Bouic, Fernanda Curros-Doyon, Nicolas Molinari, Patrice Taourel
PURPOSE: To construct a decision tree based on CT findings to differentiate acute pelvic inflammatory disease (PID) from acute appendicitis (AA) in women with lower abdominal pain and inflammatory syndrome. MATERIALS AND METHODS: This retrospective study was approved by our institutional review board and informed consent was waived. Contrast-enhanced CT studies of 109 women with acute PID and 218 age-matched women with AA were retrospectively and independently reviewed by two radiologists to identify CT findings predictive of PID or AA...
September 11, 2017: European Radiology
https://www.readbyqxmd.com/read/28894923/differences-in-myocardial-strain-between-pectus-excavatum-patients-and-healthy-subjects-assessed-by-cardiac-mri-a-pilot-study
#10
André Lollert, Tilman Emrich, Jakob Eichstädt, Christoph Kampmann, Tariq Abu-Tair, Salmai Turial, Christoph Düber, Karl-Friedrich Kreitner, Gundula Staatz
OBJECTIVES: To evaluate differences in myocardial strain between pectus excavatum (PE) patients and healthy subjects (HS) assessed by cardiac MRI using the feature-tracking algorithm. METHODS: Cardiac MRI was performed in 14 PE patients and 14 HS (9:5 male to female in each group; age 11-30 years) using a 3T scanner. Post-examination analysis included manual biventricular contouring with volumetry and ejection fraction measurement by two independent radiologists...
September 11, 2017: European Radiology
https://www.readbyqxmd.com/read/28894912/optimisation-of-the-mr-protocol-in-pregnant-women-with-suspected-acute-appendicitis
#11
Ilah Shin, Yong Eun Chung, Chansik An, Hye Sun Lee, Honsoul Kim, Joon Seok Lim, Myeong-Jin Kim
PURPOSE: To investigate the optimal magnetic resonance (MR) imaging protocol in pregnant women suspected of having acute appendicitis. MATERIALS AND METHODS: One hundred and forty-six pregnant women with suspected appendicitis were included. MR images were reviewed by two radiologists in three separate sessions. In session 1, only axial single-shot turbo spin echo (SSH-TSE) T2-weighted images (WI) were included with other routine sequences. In sessions 2 and 3, coronal and sagittal T2WI were sequentially added...
September 11, 2017: European Radiology
https://www.readbyqxmd.com/read/28894901/imaging-features-of-microvascular-invasion-in-hepatocellular-carcinoma-developed-after-direct-acting-antiviral-therapy-in-hcv-related-cirrhosis
#12
Matteo Renzulli, Federica Buonfiglioli, Fabio Conti, Stefano Brocchi, Ilaria Serio, Francesco Giuseppe Foschi, Paolo Caraceni, Giuseppe Mazzella, Gabriella Verucchi, Rita Golfieri, Pietro Andreone, Stefano Brillanti
OBJECTIVES: To evaluate imaging features of microvascular invasion (MVI) in hepatocellular carcinoma (HCC) developed after direct-acting antiviral (DAA) therapy in HCV-related cirrhosis. METHODS: Retrospective cohort study on 344 consecutive patients with HCV-related cirrhosis treated with DAA and followed for 48-74 weeks. Using established imaging criteria for MVI, HCC features were analysed and compared with those in nodules not occurring after DAA. RESULTS: After DAA, HCC developed in 29 patients (single nodule, 18 and multinodular, 11)...
September 11, 2017: European Radiology
https://www.readbyqxmd.com/read/28894898/effective-collateral-circulation-may-indicate-improved-perfusion-territory-restoration-after-carotid-endarterectomy
#13
Tianye Lin, Zhichao Lai, Yuelei Lv, Jianxun Qu, Zhentao Zuo, Hui You, Bing Wu, Bo Hou, Changwei Liu, Feng Feng
OBJECTIVES: To investigate the relationship between the level of collateral circulation and perfusion territory normalisation after carotid endarterectomy (CEA). METHODS: This study enrolled 22 patients with severe carotid stenosis that underwent CEA and 54 volunteers without significant carotid stenosis. All patients were scanned with ASL and t-ASL within 1 month before and 1 week after CEA. Collateral circulation was assessed on preoperative ASL images based on the presence of ATA...
September 11, 2017: European Radiology
https://www.readbyqxmd.com/read/28887662/coronary-artery-assessment-using-self-navigated-free-breathing-radial-whole-heart-magnetic-resonance-angiography-in-patients-with-congenital-heart-disease
#14
Moritz H Albrecht, Akos Varga-Szemes, U Joseph Schoepf, Georg Apfaltrer, Jiaqian Xu, Kwang-Nam Jin, Anthony M Hlavacek, Shahryar M Chowdhury, Pal Suranyi, Christian Tesche, Carlo N De Cecco, Davide Piccini, Matthias Stuber, Giulia Ginami, Thomas J Vogl, Arni Nutting
OBJECTIVES: To evaluate a self-navigated free-breathing three-dimensional (SNFB3D) radial whole-heart MRA technique for assessment of main coronary arteries (CAs) and side branches in patients with congenital heart disease (CHD). METHODS: SNFB3D-MRA datasets of 109 patients (20.1±11.8 years) were included. Three readers assessed the depiction of CA segments, diagnostic confidence in determining CA dominance, overall image quality and the ability to freeze cardiac and respiratory motion...
September 8, 2017: European Radiology
https://www.readbyqxmd.com/read/28887589/assessment-of-ct-dose-to-the-fetus-and-pregnant-female-patient-using-patient-specific-computational-models
#15
Tianwu Xie, Pierre-Alexandre Poletti, Alexandra Platon, Christoph D Becker, Habib Zaidi
PURPOSE: This work provides detailed estimates of the foetal dose from diagnostic CT imaging of pregnant patients to enable the assessment of the diagnostic benefits considering the associated radiation risks. MATERIALS AND METHODS: To produce realistic biological and physical representations of pregnant patients and the embedded foetus, we developed a methodology for construction of patient-specific voxel-based computational phantoms based on existing standardised hybrid computational pregnant female phantoms...
September 8, 2017: European Radiology
https://www.readbyqxmd.com/read/28884356/diagnostic-value-of-mri-based-3d-texture-analysis-for-tissue-characterisation-and-discrimination-of-low-grade-chondrosarcoma-from-enchondroma-a-pilot-study
#16
Catharina S Lisson, Christoph G Lisson, Kerstin Flosdorf, Regine Mayer-Steinacker, Markus Schultheiss, Alexandra von Baer, Thomas F E Barth, Ambros J Beer, Matthias Baumhauer, Reinhard Meier, Meinrad Beer, Stefan A Schmidt
OBJECTIVES: To explore the diagnostic value of MRI-based 3D texture analysis to identify texture features that can be used for discrimination of low-grade chondrosarcoma from enchondroma. METHODS: Eleven patients with low-grade chondrosarcoma and 11 patients with enchondroma were retrospectively evaluated. Texture analysis was performed using mint Lesion: Kurtosis, entropy, skewness, mean of positive pixels (MPP) and uniformity of positive pixel distribution (UPP) were obtained in four MRI sequences and correlated with histopathology...
September 7, 2017: European Radiology
https://www.readbyqxmd.com/read/28884296/an-open-label-prospective-observational-study-of-the-efficacy-of-bisphosphonate-therapy-for-painful-osteoid-osteoma
#17
Valérie Bousson, Tifenn Leturcq, Hang-Korng Ea, Olivier Hauger, Nadia Mehsen-Cetre, Bassam Hamzé, Caroline Parlier-Cuau, Jean-Denis Laredo, Thierry Schaeverbeke, Philippe Orcel
OBJECTIVES: To assess the efficacy of bisphosphonate therapy on bone pain in patients with osteoid osteoma (OO) (main objective), and to describe bisphosphonate-induced changes in nidus mineralisation and regional bone-marrow oedema (BMO). METHODS: A prospective, observational study was conducted from 2011 to 2014. Patients with risk factors for complications of percutaneous or surgical ablation or recurrence after ablation, were offered once monthly intravenous bisphosphonate treatment until significant pain alleviation was achieved...
September 7, 2017: European Radiology
https://www.readbyqxmd.com/read/28884222/diagnostic-feasibility-and-safety-of-ct-guided-core-biopsy-for-lung-nodules-less-than-or-equal-to-8-mm-a-single-institution-experience
#18
Ying-Yueh Chang, Chun-Ku Chen, Yi-Chen Yeh, Mei-Han Wu
OBJECTIVES: This retrospective study evaluated the diagnostic yield and safety of CT-guided core biopsy of pulmonary nodules ≤8 mm. METHODS: We determined the diagnostic yield and safety profile of CT-guided lung biopsies for 125 pulmonary nodules ≤8 mm. Pathological diagnoses were made by a combination of histopathological examination and imprint cytology. Results were compared with biopsy results for 134 pulmonary nodules >8 and ≤10 mm. RESULTS: Final diagnoses were established in 94 nodules ≤8 mm...
September 7, 2017: European Radiology
https://www.readbyqxmd.com/read/28884215/effect-of-smoking-cessation-on-quantitative-computed-tomography-in-smokers-at-risk-in-a-lung-cancer-screening-population
#19
Bertram J Jobst, Oliver Weinheimer, Mila Trauth, Nikolaus Becker, Erna Motsch, Marie-Luise Groß, Jan Tremper, Stefan Delorme, Anke Eigentopf, Monika Eichinger, Hans-Ulrich Kauczor, Mark O Wielpütz
OBJECTIVE: To longitudinally evaluate effects of smoking cessation on quantitative CT in a lung cancer screening cohort of heavy smokers over 4 years. METHODS: After 4 years, low-dose chest CT was available for 314 long-term ex-smokers (ES), 404 continuous smokers (CS) and 39 recent quitters (RQ) who quitted smoking within 2 years after baseline CT. CT acquired at baseline and after 3 and 4 years was subjected to well-evaluated densitometry software, computing mean lung density (MLD) and 15th percentile of the lung density histogram (15TH)...
September 7, 2017: European Radiology
https://www.readbyqxmd.com/read/28875364/age-and-sex-based-resource-utilisation-and-costs-in-patients-with-acute-chest-pain-undergoing-cardiac-ct-angiography-pooled-evidence-from-romicat-ii-and-acrin-pa-trials
#20
Fabian Bamberg, Thomas Mayrhofer, Maros Ferencik, Daniel O Bittner, Travis R Hallett, Sumbal Janjua, Christopher L Schlett, John T Nagurney, James E Udelson, Quynh A Truong, Pamela K Woodard, Judd E Hollander, Harold Litt, Udo Hoffmann
OBJECTIVES: To determine resource utilisation according to age and gender-specific subgroups in two large randomized diagnostic trials. METHODS: We pooled patient-specific data from ACRIN-PA 4005 and ROMICAT II that enrolled subjects with acute chest pain at 14 US sites. Subjects were randomized between a standard work-up and a pathway utilizing cardiac computed tomography angiography (CCTA) and followed for the occurrence of acute coronary syndrome (ACS) and resource utilisation during index hospitalisation and 1-month follow-up...
September 5, 2017: European Radiology
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