Radiation doses from phantom measurements at high-pitch dual-source computed tomography coronary angiography

2012 ◽  
Vol 81 (4) ◽  
pp. 773-779 ◽  
Author(s):  
Robert Goetti ◽  
Sebastian Leschka ◽  
Markus Boschung ◽  
Sabine Mayer ◽  
Christophe Wyss ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Angiography ◽  
Computed Tomography Coronary Angiography ◽  
Radiation Doses ◽  
High Pitch ◽  
Phantom Measurements ◽  
Dual Source ◽  
Dual Source Computed Tomography

scholarly journals Image Quality and Dose Reduction by Dual Source Computed Tomography Coronary Angiography: Protocol Comparison

Dose-Response ◽  
2018 ◽  
Vol 16 (4) ◽  
pp. 155932581880583 ◽  
Author(s):  
Ernesto Forte ◽  
Serena Monti ◽  
Chiara Anna Parente ◽  
Lukas Beyer ◽  
Roberto De Rosa ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Coronary Angiography ◽  
Effective Dose ◽  
Computed Tomography Coronary Angiography ◽  
Correct Selection ◽  
Dual Source ◽  
Group A ◽  
Noise Ratio ◽  
Dual Source Computed Tomography

Purpose: To compare image quality and radiation dose among different protocols in patients who underwent a 128-slice dual source computed tomography coronary angiography (DSCT-CTCA). Methods: Ninety patients were retrospectively grouped according to heart rate (HR): 26 patients (group A) with stable HR ≤60 bpm were acquired using high pitch spiral mode (FLASH); 48 patients (group B) with irregular HR ≤60 bpm or stable HR between 60 and 70 bpm using step and shoot mode; and 16 patients (group C) with irregular HR >60 bpm or stable HR ≥70 bpm by retrospective electrocardiogram pulsing acquisition. Signal to noise ratio (SNR) and contrast to noise ratio (CNR) were measured for the main vascular structures. Moreover, the dose-length product and the effective dose were assessed. Results: Both SNR and CNR were higher in group A compared to group C (18.27 ± 0.32 vs 11.22 ± 0.50 and 16.75 ± 0.32 vs 10.17 ± 0.50; P = .001). The effective dose was lower in groups A and B (2.09 ± 1.27 mSv and 4.60 ± 2.78 mSv, respectively) compared to group C (9.61 ± 5.95 mSv) P < .0001. Conclusion: The correct selection of a low-dose, HR-matched CTCA scan protocol with a DSCT scanner provides substantial reduction of radiation exposure and better SNR and CNR.

Dual-source computed tomography coronary angiography in patients with high heart rate

2013 ◽  
Vol 29 (4) ◽  
pp. 443-448 ◽  
Author(s):  
Tatsuhiro Fujimura ◽  
Toshiro Miura ◽  
Tomoko Nao ◽  
Masayuki Yoshimura ◽  
Yoshiteru Nakashima ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Heart Rate ◽  
Coronary Angiography ◽  
Computed Tomography Coronary Angiography ◽  
High Heart Rate ◽  
Dual Source ◽  
Dual Source Computed Tomography

Mono- Versus Bisegment Reconstruction Algorithms for Dual-Source Computed Tomography Coronary Angiography

2008 ◽  
Vol 43 (10) ◽  
pp. 703-711 ◽  
Author(s):  
Sebastian Leschka ◽  
Hatem Alkadhi ◽  
Paul Stolzmann ◽  
Florian T. Schmid ◽  
Simon C. Leschka ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Angiography ◽  
Computed Tomography Coronary Angiography ◽  
Reconstruction Algorithms ◽  
Dual Source ◽  
Dual Source Computed Tomography

scholarly journals Influence of Heart Rate on the Diagnostic Accuracy of Dual-Source Computed Tomography Coronary Angiography

2007 ◽  
Vol 50 (25) ◽  
pp. 2393-2398 ◽  
Author(s):  
Ulrike Ropers ◽  
Dieter Ropers ◽  
Tobias Pflederer ◽  
Katharina Anders ◽  
Axel Kuettner ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Heart Rate ◽  
Coronary Angiography ◽  
Diagnostic Accuracy ◽  
Computed Tomography Coronary Angiography ◽  
Dual Source ◽  
Dual Source Computed Tomography
Sign in / Sign up

Export Citation Format

Share Document