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320 slice cta

Futoshi Yamanaka, Koki Shishido, Tomoki Ochiai, Noriaki Moriyama, Kazuki Tobita, Tomoyuki Tani, Kyosuke Furuhashi, Kazuya Sugitatsu, Daisuke Hachinohe, Tadashi Wada, Shingo Mizuno, Hidetaka Suenaga, Yutaka Tanaka, Masato Murakami, Junya Matsumi, Saeko Takahashi, Takeshi Akasaka, Shinji Tanaka, Shigeru Saito
OBJECTIVE: Multi-slice computed tomography (MSCT) coronary angiography has been reported as an effective alternative to invasive conventional coronary angiography (CCA) for the diagnosis of coronary artery disease (CAD). However, in previous reports, the diagnostic accuracy of MSCT has not been significant enough to be of benefit in symptomatic patients. The aim of this study was to identify the usefulness of 320-slice computed tomography coronary angiography (320-CTA) for symptomatic patients in terms of the diagnostic accuracy of 320-CTA and the prevalence of vasospastic angina pectoris (VSAP) within the study cohort...
September 29, 2016: European Journal of Internal Medicine
Olivier Ghekiere, Alain Nchimi, Julien Djekic, Mounia El Hachemi, Isabelle Mancini, Dominique Hansen, Piet Vanhoenacker, Albert de Roos, Paul Dendale
PURPOSE: To investigate the diagnostic confidence of Coronary Computed Tomography Angiography (CCTA) and the effect of patient-related factors on CCTA image quality using a second-generation 320-slice scanner. METHODS AND RESULTS: 200 consecutive patients (mean age 60±12years; 109 men) prospectively underwent CCTA. The mean body mass index (BMI) was 27.1±4.9kg/m(2); the median heart rate (HR) was 60.0 (interquartile range (IQR), 53.9-66.1) beats per minute (bpm)...
October 15, 2016: International Journal of Cardiology
Todd C Pulerwitz, Omar K Khalique, Tamim N Nazif, Anna Rozenshtein, Gregory D N Pearson, Rebecca T Hahn, Torsten P Vahl, Susheel K Kodali, Isaac George, Martin B Leon, Belinda D'Souza, Ming Jack Po, Andrew J Einstein
BACKGROUND: Transcatheter aortic valve replacement (TAVR) is a lifesaving procedure for many patients high risk for surgical aortic valve replacement. The prevalence of chronic kidney disease (CKD) is high in this population, and thus a very low contrast volume (VLCV) computed tomography angiography (CTA) protocol providing comprehensive cardiac and vascular imaging would be valuable. METHODS: 52 patients with severe, symptomatic aortic valve disease, undergoing pre-TAVR CTA assessment from 2013-4 at Columbia University Medical Center were studied, including all 26 patients with CKD (eGFR<30 mL/min) who underwent a novel VLCV protocol (20 mL of iohexol at 2...
July 2016: Journal of Cardiovascular Computed Tomography
Joseph Gabriel, Stefan Klimach, Peter Lang, David Hildick-Smith
Invasive coronary angiography (ICA) has long been the established gold standard in assessing graft patency following coronary artery bypass graft (CABG). Over the past decade or so however, improvements in computed tomography angiography (CTA) technology have allowed its emergence as a useful clinical tool in graft assessment. The recent introduction of 64-slice and now 128-slice scanners into widespread distribution, and the development of 320-detector row technology allowing volumetric imaging of the entire heart at single points in time within one cardiac cycle, has increased the potential of CTA to supersede ICA in this capacity...
August 2015: Interactive Cardiovascular and Thoracic Surgery
D Ippolito, C Talei Franzesi, D Fior, P A Bonaffini, O Minutolo, S Sironi
OBJECTIVE: To assess the diagnostic quality of low dose (100 kV) CT angiography (CTA), by using ultra-low contrast medium volume (30 ml), for thoracic and abdominal aorta evaluation. METHODS: 67 patients with thoracic or abdominal vascular disease underwent multidetector CT study using a 256 slice scanner, with low dose radiation protocol (automated tube current modulation, 100 kV) and low contrast medium volume (30 ml; 4 ml s(-1)). Density measurements were performed on ascending, arch, descending thoracic aorta, anonymous branch, abdominal aorta, and renal and common iliac arteries...
May 2015: British Journal of Radiology
Ricardo C Cury, Therese M Kitt, Kathleen Feaheny, Ron Blankstein, Brian B Ghoshhajra, Matthew J Budoff, Jonathon Leipsic, James K Min, Jamie Akin, Richard T George
BACKGROUND: Myocardial CT perfusion (CTP) is a promising tool for the detection of myocardial ischemia. We hypothesize that regadenoson CTP is noninferior to regadenoson single photon emission CT (SPECT) for detecting or excluding myocardial ischemia. METHODS: Patients (men ≥ 45 years; women ≥ 50 years) with known or suspected coronary artery disease (n = 124) were randomized to 1 of 2 diagnostic sequences: rest and regadenoson SPECT on day 1, then regadenoson CTP and rest CTP (and coronary CT angiography [CTA]) (CTA; same acquisition) on day 2 or regadenoson CTP and rest CTP (and CTA) on Day 1, then rest and regadenoson SPECT on day 2...
March 2015: Journal of Cardiovascular Computed Tomography
Suhua Li, Jinlai Liu, Long Peng, Ruimin Dong, Huilan Wu, Chenlin Wang, Qiongqiong Ni, Yanting Luo, Jieming Zhu, Lin Chen
OBJECTIVE: To investigate qualitatively and quantitatively the diagnostic performance of 320-slice CT for detection of coronary artery disease with respect to different atherosclerotic plaque characteristics. METHODS: A retrospective search was performed for inpatients underwent both coronary CT and further coronary angiography (CAG) from December 1, 2008 to December 31, 2012. The diagnostic performance of 320-slice CTA for detecting significant stenosis ( ≥ 50% diameter) with respect to atherosclerotic plaque characteristics were analyzed by calculating sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), accuracy, kappa index (κ), and area under the receiver operating characteristic curve (AUC)...
October 28, 2014: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Xiao-Yan Li, Guo-Ming Zhang, Hong-Ming Zhang, Gang Sun, Shu-Fang Han, Hong Tan, Yu-Qi Gao, Qun Jin, Yan-Min Li, Jie Fang
UNLABELLED: The global coronary calcium score has been widely used in the evaluation of coronary plaque burden and cardiovascular disease events. In this study, we investigated the value of segmental coronary calcium score (SCCS) on the diagnosis and interventional treatment. We studied 87 patients with coronary angiography (CAG) and coronary CT angiography (CTA) by 320-slice dynamic volume CT (DVCT). SCCS was determined for each segmental separately. All lesions which SCCS was greater than 0 were enrolled, and were divided into three groups, mild calcification group (SCCS were less than 80), Moderate calcification group (SCCS were more than 80 and less than 200) and Severe calcification group (SCCS were more than 200)...
2014: International Journal of Clinical and Experimental Medicine
Elyas Ghariq, Adriënne M Mendrik, Peter W A Willems, Raoul M S Joemai, Eidrees Ghariq, Evert-jan Vonken, Matthias J P van Osch, Marianne A A van Walderveen
Background and Purposes. The 320-detector row CT scanner enables visualization of whole-brain hemodynamic information (dynamic CT angiography (CTA) derived from CT perfusion scans). However, arterial image quality in dynamic CTA (dCTA) is inferior to arterial image quality in standard CTA. This study evaluates whether the arterial image quality can be improved by using a total bolus extraction (ToBE) method. Materials and Methods. DCTAs of 15 patients, who presented with signs of acute cerebral ischemia, were derived from 320-slice CT perfusion scans using both the standard subtraction method and the proposed ToBE method...
2014: BioMed Research International
Ashkan A Malayeri, Stefan L Zimmerman, Spencer T Lake, Elliot K Fishman, Pamela T Johnson
This study aims to correlate coronary artery enhancement levels with quality of vessel visualization and calcified plaque visualization using a 128-slice dual-source CT (DSCT) scanner. Coronary CT angiography exams from 52 patients, mean age of 55 years (range, 22-90) and mean weight of 184 lbs (range, 120-320 lbs), were reviewed retrospectively. Contrast infusion rates ranged from 4.5 to 7 mL/s (mean, 5.8 mL/s). Postcontrast density of the largest calcified plaque and postcontrast density of the left main (LM) and right coronary arteries (RCA) were recorded...
October 2014: Emergency Radiology
Xiao-yan Li, Guo-ming Zhang, Gang Sun, Juan Liu, Qing Sun, Li Li, Min Li, Qi-meng Wang
OBJECTIVE: To compare the characteristics of lesions with consistent and inconsistent judgments of coronary stenosis on 320-slice dynamic volume computed tomography (DVCT) versus coronary angiography (CAG). METHODS: Ninety-two patients (265 lesions) with CAG and DVCT within 2 weeks from January 2011 to May 2012 were enrolled. According to the matching degree of stenotic judgment, all lesions were divided into consistent and inconsistent groups. The position of lesions, degree of bending, plaque morphology and calcification proportion were analyzed...
August 20, 2013: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Matthias Rief, Elke Zimmermann, Fabian Stenzel, Peter Martus, Karl Stangl, Johannes Greupner, Fabian Knebel, Anisha Kranz, Peter Schlattmann, Michael Laule, Marc Dewey
OBJECTIVES: This study sought to determine whether adding myocardial computed tomography perfusion (CTP) to computed tomography angiography (CTA) improves diagnostic performance for coronary stents. BACKGROUND: CTA of coronary stents has been limited by nondiagnostic studies caused by metallic stent material and coronary motion. METHODS: CTA and CTP were performed in 91 consecutive patients with stents before quantitative coronary angiography, the reference standard for obstructive stenosis (≥50%)...
October 15, 2013: Journal of the American College of Cardiology
Yukihiro Nagatani, Masashi Takahashi, Hiroshi Sakai, Norihisa Nitta, Hiromitsu Noda, Yasutaka Nakano, Hideji Otani, Akinaga Sonoda, Kiyoshi Murata
SESSION TYPE: COPD: Severity and Risk PredictorsPRESENTED ON: Monday, October 22, 2012 at 11:15 AM - 12:30 PMPURPOSE: To assess the relationship between the total cross-sectional area (CSA) of small pulmonary vessels on computed tomography (CT) images and both coronary arterial calcification index and extent of significant stenotic coronary segments in COPD patientsMETHODS: Study group consisted of 46 COPD patients and 25 emphysema patients without airflow limitation who underwent both coronary CT angiography (CTA) and low-dose chest CT by 320-row scanner...
October 1, 2012: Chest
Suhua Li, Qiongqiong Ni, Huilan Wu, Long Peng, Ruimin Dong, Lin Chen, Jinlai Liu
OBJECTIVE: This study aims to review the recent literatures on the diagnostic accuracy of 320-slice computed tomography angiography (CTA) for detection of coronary artery stenosis, with invasive coronary angiography (ICA) as the reference standard. METHODS: A PubMed and EMBASE cross-search of the literatures on use of 320-slice CTA compared with ICA for detection of coronary artery stenosis, with publication date limited to January 1, 2008 to December 31, 2012. Individual and pooled sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were calculated at the patient-, vessel- and segment-level...
October 3, 2013: International Journal of Cardiology
T C H Hoogenboom, R M J van Beurden, B van Teylingen, B Schenk, P W A Willems
Time resolved whole brain CT angiography (4D-CTA) is a novel imaging technology providing information regarding blood flow. One of the factors that influence the diagnostic value of this examination is the temporal resolution, which is affected by the gantry rotation speed during acquisition and the reconstruction interval during post-processing. Post-processing determines the time spacing between two reconstructed volumes and, unlike rotation speed, does not affect radiation burden. The data sets of six patients who underwent a cranial 4D-CTA were used for this study...
December 2012: Interventional Neuroradiology
Yuan Fang, Xiao-chun Meng, Jie Qin, Kang-shun Zhu, Pei-yi Xie, Li Quan, Hong Shan
OBJECTIVE: To investigate the value of 320-rows CT perfusion (CTP) imaging in the study of hepatic hemodynamic characters in ischemic-type biliary lesions (ITBL) after liver transplantation. METHODS: A total of 11 ITBL patients received 320-slice CT angiography (CTA) and CTP after liver transplantation scheduled at 5-10 min away. Four patients underwent liver biopsy While 7 patients with normal liver after transplantation were selected as the control group. The parameters of hepatic artery perfusion (HAP), portal vein perfusion (PVP), total hepatic perfusion (TLP) and hepatic arterial perfusion index (HPI) were measured and compared for all patients...
August 21, 2012: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Juan Ding, Gang Sun, Yang Lu, Bing-bing Yu, Min Li, Li Li, Guo-ying Li, Zhao-hui Peng, Xu-ping Zhang
OBJECTIVE: To explore the usefulness of 320-slice CT angiography (CTA) for evaluating the course of the anterior ethmoidal artery (AEA) and its relationship with adjacent structures by using three-dimensional (3D) spin digital subtraction angiography (DSA) as standard reference. MATERIALS AND METHODS: From December 2008 to December 2010, 32 patients with cerebrovascular disease, who underwent both cranial 3D spin DSA and 320-slice CTA within a 30 day period from each other, were retrospectively reviewed...
November 2012: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
(no author information available yet)
In July 2009, the Medical Advisory Secretariat (MAS) began work on Non-Invasive Cardiac Imaging Technologies for the Diagnosis of Coronary Artery Disease (CAD), an evidence-based review of the literature surrounding different cardiac imaging modalities to ensure that appropriate technologies are accessed by patients suspected of having CAD. This project came about when the Health Services Branch at the Ministry of Health and Long-Term Care asked MAS to provide an evidentiary platform on effectiveness and cost-effectiveness of non-invasive cardiac imaging modalities...
2010: Ontario Health Technology Assessment Series
Jian Wang, Xiao-min Chen, Sheng-huang Wang, Hong-hua Ye, Han-bin Cui, Wei-ping Du, Hong-lin Zhou, Ming-jun Feng, Yu-ning Pan, Shao-yi Lin
OBJECTIVE: To evaluate the diagnostic accuracy of 320-slice CT coronary angiography (CTA) in the evaluation of in-stent restenosis (ISR, ≥50% luminal narrowing) in comparison with quantitative coronary angiography (CAG). METHODS: A total of 69 patients with previous stent implantation who underwent both CTA and CAG were prospectively included. We assessed diagnostic valve for ISR with CTA in comparison with CAG. RESULTS: A total of 110 stents were implanted in these patients...
June 2012: Zhonghua Xin Xue Guan Bing za Zhi
Shinichiro Fujimoto, Takeshi Kondo, Takahide Kodama, Tadaaki Orihara, Junichi Sugiyama, Makoto Kondo, Akira Endo, Hiroshi Fukazawa, Hideki Nagaoka, Akitsugu Oida, Takanori Ikeda, Junichi Yamazaki, Shinichi Takase, Jagat Narula
BACKGROUND:  Coronary computed tomography angiography (CTA) findings of positive vessel remodeling and low-attenuation plaque, referred to as computed tomography-verified high-risk plaque (CT-HRP), have been reported to be associated with the development of subsequent acute coronary syndromes. The aim of this study was to examine the usefulness of coronary CTA for coronary risk re-stratification of patients with asymptomatic and atypical chest symptoms. METHODS AND RESULTS:  A total of 1,139 subjects (M/F 602/537; mean age, 61...
2012: Circulation Journal: Official Journal of the Japanese Circulation Society
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