Global and segmental myocardial deformation by 2D speckle tracking compared to visual assessment

Table 2 Intra-observer correlation and variability of segmental analysis by visual analysis and automatic function imaging

	Wall motion score			Speckle tracking (AFI)
	Total	GroupI	Group II	Total	GroupI	Group II
	(n = 55)	(n = 35)	(n = 20)	(n = 55)	(n = 35)	(n = 20)
1st reading	20.6 ± 6.4	24.9 ± 6.4	16.0 ± 0.0	-11.8 ± 6.7	-9.3 ± 7.1	-15.6 ± 3.7
2nd reading	22.6 ± 8.7	27.3 ± 5.9	17.7 ± 2.9	-13.6 ± 5.5	-11.3 ± 5.6	-15.6 ± 4.8
Correlation	R = 0.73, P = 0.03			R = 0.9, P < 0.0001
MD	2.1 ± 5.9	2.4 ± 5.9	1.7 ± 2.9	-0.02 ± 2.0	-0.0 ± 2.3	-0.0 ± 1.9

Data ara show as mean ± SD. MD: Mean difference; AFI: Automatic function imaging.