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. Author manuscript; available in PMC: 2018 Sep 1.

Published in final edited form as: Magn Reson Med. 2018 Feb 9;80(3):1074–1087. doi: 10.1002/mrm.27107

TABLE 2.

Median and maximum likelihood eigenvector orientation metrics for two cardiac phases (population mean ± SD)

		N_avg = 1		N_avg = 5		N_avg = 10
		Median	ML	Median	ML	Median	ML
Midsystole	HA	3.8 ± 3.5°	11.0 ± 22.1°	1.9 ± 3.8°	5.5 ± 8.6°	1.6 ± 3.1°	8.8 ± 22.3°
	HA_pitch	−1.2 ± 0.2°/%	NA	−1.2 ± 0.2°/%	NA	−1.2 ± 0.2°/%	NA
	\|SA2\|	40.9 ± 5.7°	24.6 ± 30.6°	38.2 ± 5.5°	22.7 ± 20.1°	36.6 ± 6.0°	23.7 ± v26.8°
	\|SA3\|	61.7 ± 4.3°	79.4 ± 12.6°	65.2 ± 5.5°	82.4 ± 9.4°	66.5 ± 4.8°	81.7 ± 10.2°

Diastole	HA	4.2 ± 4.5°	32.5 ± 38.2°	1.9 ± 3.4°	18.9 ± v35.6°	1.1 ± 4.1°	11.0 ± v27.9°
	HA_pitch	−1.3 ± 0.2°/%	NA	−1.3 ± 0.3°/%	NA	−1.2 ± 0.1°/%	NA
	\|SA2\|	41.2 ± 7.5°	36.0 ± 39.0°	37.8 ± 9.9°	23.0 ± 36.3°	35.0 ± 10.7°	13.9 ± 30.0°
	\|SA3\|	64.7 ± 7.1°	88.5 ± 3.2°	67.8 ± 7.7°	86.9 ± 8.0°	68.9 ± 8.1°	87.4 ± 6.0°

HA, helix angle; ML, maximum likelihood. NA, not applicable.