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Updated: Jun 25, 2026

Quantification of Mouse Heart Left Ventricular Function, Myocardial Strain, and Hemodynamic Forces by Cardiovascular Magnetic Resonance Imaging
11:13

Quantification of Mouse Heart Left Ventricular Function, Myocardial Strain, and Hemodynamic Forces by Cardiovascular Magnetic Resonance Imaging

Published on: May 24, 2021

Left ventricular diastolic function assessed with cardiovascular magnetic resonance imaging and exercise capacity in

Lukasz A Małek1, Lidia Chojnowska, Mariusz Kłopotowski

  • 1Klinika Choroby Wieńcowej, Instytut Kardiologii, ul. Alpejska 42, 04-628 Warszawa, Poland. lmalek@ikard.pl

Kardiologia Polska
|March 3, 2009
PubMed

Insights

Cardiovascular magnetic resonance (CMR) assessment of left ventricular (LV) diastolic function, specifically peak filling rate normalized to LV stroke volume index (PFR/LVSVI), is a useful marker for exercise capacity in non-obstructive hypertrophic cardiomyopathy (HCM) patients.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Exercise Physiology

Background:

  • Diastolic dysfunction significantly limits exercise capacity in non-obstructive hypertrophic cardiomyopathy (HCM) with preserved left ventricular (LV) systolic function.
  • Cardiovascular magnetic resonance (CMR) is a valuable tool for HCM diagnosis, risk stratification, and monitoring.

Purpose of the Study:

  • To evaluate the correlation between simple CMR-derived LV diastolic function parameters at rest and exercise capacity in non-obstructive HCM patients.
  • To determine if resting CMR parameters can predict exercise limitations in this patient group.

Main Methods:

  • 13 patients with non-obstructive HCM and preserved LV systolic function underwent treadmill cardiopulmonary exercise testing and CMR within one month.
  • Key diastolic parameters analyzed included LV mass index (LVMI), PFR/LVSVI, and time from end-systole to PFR normalized to heart rhythm (TPFR).

Main Results:

  • A significant positive correlation was found between resting PFR/LVSVI and peak oxygen uptake (V02peak) (r=0.64, p=0.02).
  • Patients with lower V02peak (<30 ml/kg/min) exhibited significantly reduced PFR/LVSVI compared to those with higher V02peak (p=0.035).
  • LVMI and TPFR did not correlate with exercise capacity; no significant correlations were observed between V02peak and age, LV ejection fraction, or normalized LV volumes.

Conclusions:

  • Resting CMR assessment of LV diastolic function, particularly PFR/LVSVI, serves as a practical and effective marker for gauging exercise capacity in patients with non-obstructive HCM and preserved LV systolic function.
  • This non-invasive imaging technique can aid in understanding exercise limitations in this specific HCM population.
Abstract

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