Quantification of Biventricular Myocardial Strain Using CMR Feature Tracking: Reproducibility in Small Animals

Table 1

Demographic, volumetric, and functional characteristics of nexilin knockout heterozygous and wild-type mice. MRI data are issued from the first reading.

Parameters	Heterozygous	Wild-type	value
Study population ()	6	6	—
HR			0.07
LVEDV (μl)			<0.001
LVESV (μl)			<0.0001
LVSV (μl)			0.87
LVEF (%)			<0.0001
CO (ml/min)			0.06
LVMES (mg)			0.93
LVMED (mg)			0.98
RVEDV (μl)			0.55
RVESV (μl)			<0.05
RVSV (μl)			0.26
RVEF (%)			<0.001

Results are shown as the . HR: heart rate; EDV/ESV: end-diastolic/systolic volume; SV: stroke volume; EF: ejection fraction; CO: cardiac output; LV: left ventricle; RV: right ventricle; LVMED/ES: end-diastolic/systolic left ventricular mass.