Table 2.

Linearity and gradient of transmural v₁ and v₃ helix angle (HA) and transverse angle (TA) profiles in a mid-myocardial slice in lateral (L), anterior (A), septal (S) and posterior (P) LV and RV myocardial walls (Refer to Fig. 1 for segmentation) in a slack and contractured heart.

			v1 HA		v1 TA		v3 HA		v3 TA
Linearity	Gradient (°/mm)	Linearity	Gradient (°/mm)	Linearity	Gradient (°/mm)	Linearity	Gradient (°/mm)
Slack state	LV	L	0.986	20.5	0.954	10.0	0.973	21.2	0.946	42.9
A	0.971	23.6	0.430	−4.0	0.945	22.8	0.622	17.9
S	0.967	18.3	0.943	−9.2	0.950	21.4	0.825	−33.4
P	0.941	18.2	0.817	10.7	0.975	21.1	0.792	16.3
RV	A	0.766	64.0	0.757	−55.6	0.760	74.5	0.005	2.0
L	0.946	37.7	0.701	−23.5	0.199	13.3	0.302	59.9
P	0.964	41.4	0.751	−55.0	0.977	42.2	0.000	0.5
Contractured state	LV	L	0.963	24.2	0.404	17.5	0.958	24.9	0.475	−25.6
A	0.987	19.2	0.971	−13.9	0.923	13.7	0.267	−6.8
S	0.973	22.0	0.113	4.0	0.973	21.8	0.102	−3.2
P	0.941	19.6	0.785	15.2	0.942	24.0	0.879	27.7
RV	A	0.947	31.2	0.963	−16.6	0.607	62.4	0.681	−47.2
L	0.942	29.8	0.283	−16.3	0.922	28.7	0.438	−15.7
P	0.983	28.3	0.867	28.0	0.983	27.6	0.837	38.0