|
KMID : 1146220200280010021
|
|
Journal of Cardiovascular Imaging
2020 Volume.28 No. 1 p.21 ~ p.32
|
|
|
Simultaneous Assessment of Left Ventricular Function and Coronary Artery Anatomy by Third-generation Dual-source Computed Tomography Using a Low Radiation Dose
|
|
Lee Ji-Won
Nam Kyung-Jin
Kim Jin-You
Jeong Yeon-Joo
Lee Gee-Won
Park So-Min
Lim Soo-Jin
Choo Ki-Seok
|
|
|
Abstract
|
|
|
BACKGROUND: To assess left ventricular function and coronary artery simultaneously by third-generation dual-source computed tomography (CT) using a low radiation dose.
METHODS: A total of 48 patients (36 men, 12 women; mean age 57.0 ± 9.5 years) who underwent both electrocardiography-gated cardiac CT angiography (CCTA) using 70?90 kVp and echocardiography were included in this retrospective study. The correlation between left ventricular end-diastolic volume (LVEDV), left ventricular end-systolic volume (LVESV), and left ventricular ejection fraction (LVEF) measured using CCTA and echocardiography was determined. The quality of coronary artery images was analyzed using a 4-point scale (1, excellent; 4, poor). The effective radiation dose of CCTA was calculated.
RESULTS: Mean heart rate during the CT examination was 59.9 ± 9.9 bpm (range 38?79) and the body mass index of 48 patients was 24.5 ± 2.6 kg/m2 (range 17.0?29.4). LVEDV, LVESV, and LVEF measured using CCTA and echocardiography demonstrated a fair to moderate correlation (Pearson correlation coefficient: r = 0.395, p = 0.005 for LVEDV; r = 0.509. p < 0.001 for LVESV; r = 0.551, p < 0.001 for LVEF). Average image quality score of coronary arteries was 1.0 ± 0.1 (range 1?2). A total of 99.0% (783 of 791) of segments had an excellent image quality score, and 1.0% (8 of 791) of segments had a good score. Mean effective radiation dose was 2.2 ± 0.7 mSv.
CONCLUSIONS: Third-generation dual-source CT using a low tube voltage simultaneously provides information regarding LV function and coronary artery disease at a low radiation dose. It can serve as an alternative option for functional assessment, particularly when other imaging modalities are inadequate.
|
|
|
KEYWORD
|
|
|
Multidetector computed tomography, Echocardiography, Left ventricular function, Coronary vessels, Radiation dosage
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
  
|
|