A New Methodology for Multiscale Myocardial Deformation and Strain Analysis Based on Tagging MRI

Table 1

Spatial average and standard deviation of strains from three healthy volunteers (labels I, II, III) over base, mid, and apex short-axis cross-sectional ROIs at that time frame at which 𝐸_𝑚𝑎𝑥 has attained its maximum in mid-slice (𝑡_𝐼=16, 𝑡_𝐼𝐼=15, 𝑡_𝐼𝐼𝐼=14). Rows correspond to, from top to bottom, 𝐸_cc, 𝐸_rr, 𝐸_cr, 𝐸_max, and 𝐸_min.

Base			MID			APEX
I	II	III	I	II	III	I	II	III
−0.16±0.13	−0.17 ± 0.11	−0.19 ± 0.11	−0.19 ± 0.09	−0.17 ± 0.08	−0.15 ± 0.09	−0.16 ± 0.16	−0.20 ± 0.09	−0.19 ± 0.13
0.20 ± 0.25	0.16 ± 0.21	0.14 ± 0.25	0.04 ± 0.20	0.14 ± 0.15	0.03 ± 0.15	0.07 ± 0.23	0.20 ± 0.23	−0.02 ± 0.18
0.02 ± 0.15	−0.04 ± 0.12	−0.07 ± 0.13	0.01 ± 0.07	−0.02 ± 0.09	−0.06 ± 0.11	0.07 ± 0.14	−0.03 ± 0.11	−0.05 ± 0.12
0.25 ± 0.22	0.19 ± 0.20	0.18 ± 0.23	0.07 ± 0.17	0.16 ± 0.15	0.09 ± 0.16	0.15 ± 0.21	0.22 ± 0.22	0.05 ± 0.19
−0.22 ± 0.11	−0.21 ± 0.09	−0.24 ± 0.09	−0.23 ± 0.09	−0.19 ± 0.08	−0.21 ± 0.07	−0.26 ± 0.12	−0.23 ± 0.09	−0.27 ± 0.09