Table 3.

Main vortex properties in NIDCM patients and control subjects

	NIDCM Patients	Control Subjects	P Value
Main vortex core
Vortex duration, %cycle	86 ± 13	81 ± 13	0.09
Mean radius, cm	1.1 ± 0.3	0.9 ± 1.1	0.2
Peak radius, cm	1.8 ± 0.5	1.4 ± 0.7	0.0004
Mean relative vortex area	0.09 ± 0.05	0.07 ± 0.06	0.02
Peak relative vortex area	0.25 ± 0.14	0.20 ± 0.12	0.02
Peak long-axis position (normalized)	0.55 ± 0.09	0.51 ± 0.14	0.07
Long-axis postion at AVO (normalized)	0.43 ± 0.14	0.28 ± 0.12	<0.0001
Peak short-axis position (normalized)	0.28 ± 0.18	0.30 ± 0.15	0.5
Mean circulation, m2/s	0.0144 ± 0.0046	0.0092 ± 0.0036	<0.0001
Mean normalized circulation, ×10−12 s−1)	3.2 ± 1.0	2.8 ± 1.1	0.05
Mean Reynolds number	3600 ± 1150	2300 ± 900	<0.0001
Mean in-plane energy, mJ/m	14 ± 8	8 ± 4	<0.0001
Secondary vortex core
Vortex duration, %cycle	55 ± 28	57 ± 29	0.79
Mean radius, cm	0.66 ± 0.55	0.54 ± 0.74	0.32
Peak radius, cm	1.23 ± 0.9	0.99 ± 0.57	0.08
Mean relative vortex area	0.06 ± 0.07	0.04 ± 0.04	0.115
Peak relative vortex area	0.13 ± 0.14	0.13 ± 0.13	0.82
Peak long-axis position (normalized)	0.46 ± 0.25	0.45 ± 0.26	0.9
LAx position at AVO	0.26 ± 0.30	0.33 ± 0.27	0.35
Peak short-axis position (normalized)	0.18 ± 0.17	0.21 ± 0.19	0.45
Mean circulation, m/s2	0.0081 ± 0.007	0.0055 ± 0.005	0.02
Mean normalized circulation, ×10−12 s−1	1.9 ± 1.8	1.7 ± 1.5	0.5
Mean Reynolds number	2025 ± 1750	1375 ± 1250	0.02
Mean in-plane energy, mJ/m	7 ± 8	5 ± 5	0.04
Global properties
Cases with new vortex during late filling			<0.0001
No. of subjects	14	50
Percent	23	80
Filling jet diameter at peak E wave, cm	3.3 ± 2.8	4.0 ± 2.5	0.14
Filling jet diameter at peak A wave, cm	2.6 ± 2.9	3.1 ± 2.8	0.38
Vortex symmetry	0.58 ± 0.54	0.63 ± 1.25	0.83

AVO, aortic valve opening.