label: Myocardial Performance Index
label_lc: myocardial performance index
description: "A calculated result that uses the following formula to quantify both systolic and diastolic ventricular function: MPI = IVCT + IVRT) / V ET, in which IVCT is isovolumetric contraction time, IVRT is isovolumetric relaxation time, and V ET is ventricular ejection time."