Table 1

Five-Point System for Grading of the Severity of Coronary Artery Luminal Diameter Stenosis by CT Angiography

CCTA Grade
0No stenosis
1<25% stenosis
225%–49% stenosis
350%–69% stenosis
470%–89% stenosis
5≥90% stenosis

CCTA = coronary computed tomographic angiography; CT = computed tomography.