Fig. 5

Frequency of Unevaluable Segments of Coronary Arteries on Computed Tomography （CT） Among Three Electrocardiogram （ECG）-gating Methods （Modified from Reference 28）.

　In 35 subjects with heart rate （HR） ＞65 beats per minute, the percentage of unevaluable segments of coronary arteries among a total of 560 segments on CT were significantly higher in virtual prospective ECG gating without padding （13.6±27.9%） than in virtual prospective ECG gating with padding （0.7±3.1%）, and retrospective ECG gating （0.7±3.1%） （both P＝0.012）.