Correlation between Doppler, Manual Morphometry, and Histopathology Based Morphometry of Radial Artery as a Conduit in Coronary Artery Bypass Grafting

Table 4

Comparison of USG and histology based morphometry; IMTRD: intima-media thickness ratio distal, IMTR: intima-media thickness ratio proximal, ITD: intimal thickness distal, ITP: intimal thickness proximal, MTD: medial thickness distal, and MTP: medial thickness proximal.

	Intraclass correlation coefficient (ICC)	Mean difference	Limit of agreement (upper and lower limit with 95% limits of agreement)
USG ITP and morpho-ITP	0.91	−0.001	−0.003 to 0.002
USG ITD and morpho-ITD	0.90	−0.004	−0.014 to 0.006
USG MTP and morpho-MTP	0.91	−0.004	−0.020 to 0.012
USG MTD and morpho-MTD	0.89	−0.002	−0.006 to 0.001
USG IMTRP and morpho-IMTRP	0.89	0.009	−0.039 to 0.057
USG IMTRD and morpho-IMTRD	0.92	−0.015	−0.063 to 0.033