Table 1.

IVOCT plaque features, including lesion length and feature groupings (4 lumen, 6 calcium, 15 FC, and 5 vulnerable plaque features). FC refers to the fibrous cap, and VP represents vulnerable plaque.

N	Features
1	Lesion length (mm)
2	Lumen	Minimum lumen area (mm2)
3		Average lumen area (mm2)
4		Minimum lumen diameter (mm)
5		Average lumen diameter (mm)
6	Calcium	Maximum calcium angle (°)
7		Minimum calcium angle (°)
8		Maximum calcium thickness (mm)
9		Minimum calcium thickness (mm)
10		Maximum calcium depth (mm)
11		Minimum calcium depth (mm)
12	FC	Maximum FC angle (°)
13		Minimum FC angle (°)
14		Minimum FC thickness (mm)
15		Maximum FC area-1 (mm2)
16		Maximum FC area-2 (mm2)
17		Maximum FC area-3 (mm2)
18		Maximum FC area-T (mm2)
19		FC Surface area-1 (mm2)
20		FC Surface area-2 (mm2)
21		FC Surface area-3 (mm2)
22		FC Surface area-T (mm2)
23		FC burden-1
24		FC burden-2
25		FC burden-3
26		FC burden-T
27	VP	Microchannel
28		Macrophage Infiltration
29		Cholesterol Crystal
30		Layered Plaque
31		Calcium Nodule