Image quality and radiation dose of ECG-triggered High-Pitch Dual-Source cardiac computed tomography angiography in children for the evaluation of central vascular stents

2019 ◽  
Vol 35 (2) ◽  
pp. 367-374 ◽  
Author(s):  
Christian A. Barrera ◽  
Hansel J. Otero ◽  
Ammie M. White ◽  
David Saul ◽  
David M. Biko
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Radiation Dose ◽  
Computed Tomography Angiography ◽  
Cardiac Computed Tomography ◽  
High Pitch ◽  
Cardiac Computed Tomography Angiography ◽  
Vascular Stents ◽  
Dual Source

Radiation Dose and Image Quality in Pediatric Cardiac Computed Tomography: A Comparison Between Sequential and Third-Generation Dual-Source High-Pitch Spiral Techniques

2016 ◽  
Vol 37 (8) ◽  
pp. 1397-1403 ◽  
Author(s):  
Huiliang Koh ◽  
Ching Ching Ong ◽  
Yun Song Choo ◽  
Chong Ri Liang ◽  
Grace Hui Zhen Tan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Radiation Dose ◽  
Cardiac Computed Tomography ◽  
Third Generation ◽  
High Pitch ◽  
Dual Source

scholarly journals Computed Tomography Angiography with a 192-slice Dual-source Computed Tomography System: Improvements in Image Quality and Radiation Dose

2016 ◽  
Vol 6 ◽  
pp. 44 ◽  
Author(s):  
Philip V M Linsen ◽  
Adriaan Coenen ◽  
Marisa M Lubbers ◽  
Marcel L Dijkshoorn ◽  
Mohamed Ouhlous ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Heart Rate ◽  
Image Quality ◽  
Radiation Dose ◽  
Computed Tomography Angiography ◽  
Signal To Noise Ratio ◽  
High Pitch ◽  
Subjective Image Quality ◽  
Dual Source ◽  
Noise Ratio

Purpose: This study aims to compare image quality, radiation dose, and the influence of the heart rate on image quality of high-pitch spiral coronary computed tomography angiography (CCTA) using 128-slice (second generation) dual-source CT (DSCT) and a 192-slice DSCT (third generation) scanner. Materials and Methods: Two consecutive cohorts of fifty patients underwent CCTA by high-pitch spiral scan mode using 128 or 192-slice DSCT. The 192-slice DSCT system has a more powerful roentgen tube (2 × 120 kW) that allows CCTA acquisition at lower tube voltages, wider longitudinal coverage for faster table speed (732 m/s), and the use of iterative reconstruction. Objective image quality was measured as the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). Subjective image quality was evaluated using a Likert scale. Results: While the effective dose was lower with 192-slice DSCT (1.2 ± 0.5 vs. 0.6 ± 0.3 mSv; P < 0.001), the SNR (18.9 ± 4.3 vs. 11.0 ± 2.9; P < 0.001) and CNR (23.5 ± 4.8 vs. 14.3 ± 4.1; P < 0.001) were superior to 128-slice DSCT. Although patients scanned with 192-slice DSCT had a faster heart rate (59 ± 7 vs. 56 ± 6; P = 0.045), subjective image quality was scored higher (4.2 ± 0.8 vs. 3.0 ± 0.7; P < 0.001) compared to 128-slice DSCT. Conclusions: High-pitch spiral CCTA by 192-slice DSCT provides better image quality, despite a higher average heart rate, at lower radiation doses compared to 128-slice DSCT.

Radiation Dose and Image Quality of Prospective Triggering With Dual-Source Cardiac Computed Tomography

2009 ◽  
Vol 103 (8) ◽  
pp. 1168-1173 ◽  
Author(s):  
Ron Blankstein ◽  
Amar Shah ◽  
Rodrigo Pale ◽  
Suhny Abbara ◽  
Hiram Bezerra ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Quality ◽  
Radiation Dose ◽  
Cardiac Computed Tomography ◽  
Dual Source ◽  
Prospective Triggering
Sign in / Sign up

Export Citation Format

Share Document