Table 1.

Summary of the studies investigating normal values for SENC in the right and left ventricle of the heart in healthy subjects

First author, journal, and year of publication	Number of volunteers	Region of interest	Comparison with tagged MR	Single‐heartbeat acquisitions	Mean longitudinal strain values	Mean circumferential strain values
Garot et al., Radiology, 2004	5	Left ventricle	Yes	No	10.6 ± 0.5b	NA
Ibrahim et al., JMRI, 2007	10	Left ventricle	Yes	No	17.8 ± 1.3	21.0 ± 1.2
Korosoglou et al., JMRI, 2008	12	Left ventricle	Yes	Yes	NA	21.7 ± 2.7
Neizel et al., JMRI, 2009	75	Left ventricle	Yes	No	19.5 ± 2.9 to 24.3 ± 3.2a	19.5 ± 3.2 to 23.7 ± 3.1a
Hamdan et al., JMRI, 2009	16	Left ventricle	No	No	16.4 ± 1.6 to 22.3 ± 1.8a	14.% ± 1.8% to 22.0 ± 3.0a
Youssef et al., JCMR, 2008	21	Right ventricle	No	No	NA	18.7 ± 4.3
Shehata et al., MRM, 2010	11	Right ventricle	Yes	Yes	21.8 ± 2.0 for the RV basec	21.8 ± 1.9 for the RV basec
Korosoglou et al., Circulation CVI, 2009	17	Left ventricled	No	No	NA	21.5 ± 2.2
Korosoglou et al., JACC CVI, 2010	18	Left ventricled	No	No	19.2 ± 3.4	21.8 ± 3.8

MR, magnetic resonance; NA, not applicable; RV, right ventricular.

Strain values are given as absolute values.

^aRegional heterogeneity was observed with different values among different segments. The value for the segments with the lowest and the highest strain values is provided, respectively.

^bLongitudinal SENC values in this study are lower than those measured in all other subsequent studies, which may be attributed to an older implementation of the SENC pulse sequence at that time point.

^cIncreasing values of absolute strain were observed from the base to the apex of the right ventricle.

^dStudies performed at baseline and during inotropic stimulation with dobutamine.