scholarly journals Value of detecting peri‐device leak and incomplete endothelialization by cardiac CT angiography in atrial fibrillation patients post Watchman LAAC combined with radiofrequency ablation

2021 ◽  
Vol 32 (10) ◽  
pp. 2655-2664
Author(s):  
Ming‐Zhe Zhao ◽  
Run‐Min Chi ◽  
Ying Yu ◽  
Qun‐Shan Wang ◽  
Jian Sun ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Radiofrequency Ablation ◽  
Ct Angiography ◽  
Cardiac Ct ◽  
Cardiac Ct Angiography

Dose performance and image quality: Dual source CT versus single source CT in cardiac CT angiography

2009 ◽  
Vol 72 (3) ◽  
pp. 396-400 ◽  
Author(s):  
Min Wang ◽  
Heng-Tao Qi ◽  
Xi-Ming Wang ◽  
Tao Wang ◽  
Jiu-Hong Chen ◽  
...  
Keyword(s):  
Image Quality ◽  
Ct Angiography ◽  
Cardiac Ct ◽  
Dual Source Ct ◽  
Single Source ◽  
Cardiac Ct Angiography ◽  
Dual Source

Prevalence of obstructive coronary artery disease in an outpatient cardiac CT angiography environment

2008 ◽  
Vol 129 (1) ◽  
pp. 32-36 ◽  
Author(s):  
Matthew J. Budoff ◽  
Ambarish Gopal ◽  
Khawar M. Gul ◽  
Song S. Mao ◽  
Hans Fischer ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Ct Angiography ◽  
Cardiac Ct ◽  
Obstructive Coronary Artery Disease ◽  
Cardiac Ct Angiography ◽  
Artery Disease

Cardiac CT Angiography

2014 ◽  
pp. 68-78
Author(s):  
Rishi Agrawal ◽  
Suhny Abbara
Keyword(s):  
Ct Angiography ◽  
Cardiac Ct ◽  
Cardiac Ct Angiography

scholarly journals Deep Learning Analysis of Coronary Arteries in Cardiac CT Angiography for Detection of Patients Requiring Invasive Coronary Angiography

2020 ◽  
Vol 39 (5) ◽  
pp. 1545-1557 ◽  
Author(s):  
Majd Zreik ◽  
Robbert W. van Hamersvelt ◽  
Nadieh Khalili ◽  
Jelmer M. Wolterink ◽  
Michiel Voskuil ◽  
...  
Keyword(s):  
Deep Learning ◽  
Coronary Angiography ◽  
Ct Angiography ◽  
Coronary Arteries ◽  
Cardiac Ct ◽  
Invasive Coronary Angiography ◽  
Cardiac Ct Angiography ◽  
Learning Analysis

scholarly journals The associated factors for radiation dose variation in cardiac CT angiography

2019 ◽  
Vol 92 (1096) ◽  
pp. 20180793 ◽  
Author(s):  
Ali B Alhailiy ◽  
Ernest U Ekpo ◽  
Peter L Kench ◽  
Elaine A Ryan ◽  
Patrick C Brennan ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Ct Angiography ◽  
Associated Factors ◽  
Stepwise Regression ◽  
Cardiac Ct ◽  
Strong Positive Correlation ◽  
Positive Correlation ◽  
Cardiac Ct Angiography ◽  
Significant Difference ◽  
Dose Variation

Objective: This study aimed to examine the associated factors for dose variation and influence cardiac CT angiography (CCTA) dose benchmarks in current CT imaging centres. Methods: A questionnaire was distributed to CT centres across Australia and Saudi Arabia. All participating centres collected data for adults who underwent a CCTA procedure. The questionnaire gathered information about the examination protocol, scanning parameters, patient parameters, and volume CT dose index (CTDI vol) and dose–length product (DLP). A stepwise regression analysis was performed to assess the contribution of tube voltage (kV), padding time technique, cross-sectional area (CSA) of chest and weight to DLP. Results: A total of 17 CT centres provided data for 423 CCTA examinations. The median CTDIvol, DLP and effective dose were 18 mGy, 256 mGy.cm and 5.2 mSv respectively. There was a statistically significant difference in DLP between retrospective and prospective ECG-gating modes (p = 0.001). Median DLP from CCTA using padding technique was 61% higher than CCTA without padding (p = 0.001). The stepwise regression showed that kV was the most significant predictor of DLP followed by padding technique then CSA while patient weight did not statistically significantly predict DLP. Correlation analysis showed a strong positive correlation between weight and CSA (r = 0.78), and there was a moderate positive correlation between weight and DLP (r = 0.42), as well as CSA and DLP (r = 0.48). Conclusion: Findings show radiation dose variations for CCTA. The associated factors for dose variation found in this study are scanning mode, kV, padding time technique and CSA of the chest. This results support the need to include CSA measurements in future dose survey and for setting DRLs. Advances in knowledge: The study provides baseline information that helps to understand the associated factors for dose variations and high doses within and between centres performing CCTA.

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