. Author manuscript; available in PMC: 2019 Aug 1.

Published in final edited form as: Circ Cardiovasc Imaging. 2018 Aug;11(8):e007657. doi: 10.1161/CIRCIMAGING.118.007657

Table 2.

Quantitative coronary plaque measurements of culprit and non-culprit plaque in 32 patients with acute coronary syndrome

	Culprit-Plaque (n=35)	Nonculprit-Plaque (n=172)	p value
	Median (Q1;Q3)	Median (Q1;Q3)
IVUS-based measures
Remodeling index	1.19 (0.93-1.35)	1.02 (0.91-1.16)	0.004
Minimal luminal area (mm²)	0.64 (0.12-3.02)	4.05 (2.17-6.37)	<0.001
Plaque burden (%)	67.1 (55.6-72.1)	48.4 (41.3-56.7)	<0.001
TCFA equivalent – Low HU plaque volume <30 HU (mm³)	2.34 (0.45-5.61)	0.19 (0.00-1.07)	0.003
Other measures
Diameter stenosis (%)	65.1 (33.7-83.3)	13.8 (5.3-30.7)	<0.001
Lesion length (mm)	16.5 (8.0-21.1)	7.5 (3.8-13.0)	<0.001

IVUS = Intravascular Ultrasound; Q1;Q3 = 25th percentile, 75th percentile; Remodeling index (calculated as the ratio of the outer vessel wall area at the site of the minimal luminal area and the vessel area defined by the vessel wall reference at that location); Plaque burden (plaque area in % of the total vessel area derived from a cross-sectional view); TCFA = thin cap fibroatheroma; HU = Hounsfield Units; Lesion length (calculated as the centerline distance from the proximal to distal end of the plaque.