Comparison of Image Quality of Coronary CT Angiography between 16 and 64 Slices MDCT
Thanongchai Siriapisith MD*, Jitladda Wasinrat MD*
Affiliation : * Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok
Objective : To compare the image quality and visibility of coronary arteries that were performed by 16 slices
and 64 slices multidetector row CT (MDCT).
Study design: Descriptive analysis.
Material and Method: Twenty-eight patients suspected of hearing coronary artery disease had noninvasive
coronary CT angiography performed by 16 slices MDCT and 64 slices MDCT. Data were retrospectively
analyzed and reviewed by two radiologists. Image quality was assessed by using a grading scale from excellent
(4) to non-assessable (0) and the rate of displayed coronary branches was calculated.
Results : Four hundred twenty coronary CT angiography segments in 28 patients were evaluated.
Conclusion : Coronary CT angiography using 64 slices multi-detector row CT provides a significantly higher
image quality of coronary arteries and their branches compared with 16 slices multi-detector row CT.
Keywords : Coronary artery, CT angiography, Multidetector row CT, Image quality, Cardiac imaging
