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Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking
07:21

Magnetic Resonance Derived Myocardial Strain Assessment Using Feature Tracking

Published on: February 12, 2011

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Left ventricular myocardial strain in ventricular arrhythmia without structural heart disease using cardiac magnetic

Xuepei Tang1, Sisi Yu1, Yaohan Yu1

  • 1Department of MRI, The Second Affiliated Hospital of Nanchang UniversityNanchang, Jiangxi, China.

American Journal of Translational Research
|July 4, 2017
PubMed

Insights

Ventricular arrhythmia (VA) in structurally normal hearts can impair left ventricular (LV) function. Cardiac magnetic resonance feature tracking (CMR-FT) effectively detects abnormal LV myocardial strain in VA patients, indicating potential for early intervention.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Ventricular arrhythmias (VA) in structurally normal hearts were considered benign.
  • Recent evidence suggests VA can induce left ventricular (LV) dysfunction.
  • No effective methods currently exist to detect abnormal myocardial systolic function in VA patients.

Purpose of the Study:

  • To investigate LV myocardial strain in VA patients using cardiac magnetic resonance feature tracking (CMR-FT).
  • To assess the efficacy of CMR-FT in detecting systolic function abnormalities in VA patients without known heart disease.

Main Methods:

  • Utilized CMR-FT on balanced steady-state free precession (SSFP) cine images.
  • Analyzed LV myocardial strain in 42 VA patients and 29 healthy volunteers.
  • Compared peak strain values (radial, circumferential, longitudinal) and segmental strain patterns between groups.

Main Results:

  • VA patients exhibited lower peak radial and circumferential strain in basal and middle LV segments compared to controls.
  • Longitudinal strain was decreased in the middle LV segments of VA patients.
  • Reduced strain was more pronounced in anterior, inferoseptal, and anterolateral segments, particularly in patients with frequent premature ventricular complexes.

Conclusions:

  • VA in structurally normal hearts is associated with abnormal LV segmental wall motion.
  • CMR-FT strain analysis is an effective method for detecting these abnormalities.
  • Early clinical management is recommended to prevent symptom progression in VA patients.

Keywords:
Ventricular arrhythmiacardiac magnetic resonance

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