Table 3.

Plaque type classification using MRI compared with histology (Reader 1).

MRI\Histology	Type I,II (13)	Type III (69)	Type IV–V(96)	Type VII (10)	Type VIII (19)
Type I,II (8)	8	0	0	0	0
Type III (62)	5	52	2	0	3
Type IV–V (118)	0	17	91	0	10
Type VII (10)	0	0	0	10	0
Type VIII (9)	0	0	3	0	6

Type I,II: near normal wall thickness; Type III: diffuse intimal thickening or small eccentric plaque with no calcification;

Type IV–V: plaque with a lipid or necrotic core surrounded by fibrous tissue with possible calcification; Type VII: calcified plaque;

Type VIII: fibrotic plaque without lipid core and with possible small calcifications.