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

Table 1 Baseline criteria of all patients

	Total (n = 55)	GroupI(n = 35)	Group II (n = 20)	P value
Age	59.4 ± 13.6	61.0 ± 9.9	57.7 ± 16.9	0.4
Gender, n (%)				0.8
Male	29 (72.5%)	14 (70%)	15 (75%)
Female	11 (27.5%)	6 (30%)	5 (25%)
IVS (mm)	10.3 ± 2.4	9.4 ± 2.1	11.3 ± 2.4	0.01
PW (mm)	9.8 ± 1.7	9.4 ± 1.5	10.2 ± 1.9	0.1
LV mass	245.4 ± 99.5	254.9 ± 108.9	235.3 ± 90.6	0.5
LA diameter (mm)	38.3 ± 6.6	40.2 ± 6.4	36.3 ± 6.3	0.07
LVDD (mm)	51.2 ± 9.8	55.2 ± 11.6	49.0 ± 5.1	0.009
LVSD (mm)	36.4 ± 11.9	41.3 ± 14.1	30.2 ± 5.3	0.008
LV-FS (%)	30.0 ± 11.1	26.4 ± 11.9	34.9 ± 7.1	0.03
LVDV (mL)	119.4 ± 65.7	137.9 ± 85.8	99.9 ± 20.8	0.07
LVSV (mL)	65.7 ± 60.8	87.3 ± 77.3	40.9 ± 20.1	0.02
LV-EF (%)	49.9 ± 15.0	41.9 ± 14.1	59.7 ± 8.1	0.0001
WM score	20.6 ± 6.4	24.9 ± 6.4	16.0 ± 0.0	0.0001
WM score index	1.3 ± 0.4	1.6 ± 0.4	1.0 ± 0.0	0.0001
Global LS	-11.8 ± 6.7	-9.3 ± 7.1	-15.6 ± 3.7	0.02

Data ara show as mean ± SD. IVS: Interventricular septum; LA: Left atrium; LS: Longitudinal strain; LV: Left ventricle; LVDD: LV diastolic dimension; LVDV: LV diastolic volume; LV-EF: LV ejection fraction; LV-FS: LV fraction shortening; LVSD: LV systolic dimension; LVSV: LV systolic volume; PW: Posterior wall; WM: Wall motion.

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.

Table 3 Summarized comparison between automatic function imaging and visual analysis of wall motion abnormalities

	Visual analysis	AFI
Analysis time (min)	3.5 ± 1.9	3.9 ± 2.1
Complete analysis (%)	94.10	96.30
Intra-observer mean difference
Normal subjects	1.7 ± 2.9	-0.0 ± 1.9
Abnormal subjects	2.4 ± 5.9	-0.0 ± 2.3

Data ara show as mean ± SD. AFI: Automatic function imaging.