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MAPSE (Mitral Annular Plane Systolic Excursion) Calculator

MAPSE (Mitral Annular Plane Systolic Excursion): explanation, clinical significance and references MAPSE measures the longitudinal displacement of the mitral annulus toward the apex during systole; it is commonly measured by M-mode at the septal and lateral annulus and reported in millimetres. Typical average values reported in contemporary reference studies are approximately 12–15 mm; lower values indicate reduced l

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Myocardial Perfusion Index (MPI) Calculator

Myocardial Perfusion Index (MPI): Explanation and Clinical Context The Myocardial Perfusion Index (MPI) quantifies the ratio of myocardial blood flow during stress to resting myocardial blood flow, serving as a non-invasive marker of coronary microvascular function and myocardial perfusion reserve. An MPI value near 2.0–3.0 is generally considered normal, reflecting adequate perfusion reserve. Reduced MPI values indi

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Myocardial Strain MRI (FT Strain) Calculator

Myocardial Strain MRI (Feature Tracking, FT) : Explanation and Clinical Context Myocardial strain imaging using cardiac MRI feature tracking (FT) allows non-invasive quantification of myocardial deformation in three directions: longitudinal (GLS), circumferential (GCS), and radial (GRS). It provides early detection of subclinical myocardial dysfunction even when left ventricular ejection fraction (LVEF) is preserved.