Comparison of gated single-photon emission computed tomography with magnetic resonance imaging for evaluation of left

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MRI and PET in Mouse Models of Myocardial Infarction
10:46

MRI and PET in Mouse Models of Myocardial Infarction

Published on: December 19, 2013

J J Bax1, H Lamb, P Dibbets

  • 1Department of Cardiology, Leiden University Medical Center, The Netherlands. Bax@cardio.azl.nl

The American Journal of Cardiology
|December 13, 2000
PubMed

Insights

Magnetic resonance imaging (MRI) and gated single-photon emission computed tomography (SPECT) show excellent agreement for evaluating left ventricular (LV) function and wall motion in patients with ischemic cardiomyopathy.

Area of Science:

  • Cardiology
  • Medical Imaging

Background:

  • Ischemic cardiomyopathy often leads to left ventricular (LV) dysfunction.
  • Accurate assessment of LV function and regional wall motion is crucial for patient management.
  • Magnetic resonance imaging (MRI) and gated single-photon emission computed tomography (SPECT) are non-invasive imaging modalities used for cardiac evaluation.

Purpose of the Study:

  • To compare the diagnostic accuracy of MRI and gated SPECT in assessing LV function and regional wall motion.
  • To evaluate LV ejection fraction (LVEF), LV volumes, and regional wall motion using both imaging techniques.

Main Methods:

  • A study involving 22 patients with chronic coronary artery disease and LV dysfunction.
  • Echoplanar MRI and quantitative gated SPECT were performed on all participants.
  • Analysis included LV end-systolic volume, LV end-diastolic volume, LVEF, and regional wall motion using a 13-segment model.

Main Results:

  • Both MRI and gated SPECT demonstrated strong correlations for LVEF (r=0.90), LV end-systolic volume (r=0.87), and LV end-diastolic volume (r=0.84).
  • Regional wall motion analysis showed excellent agreement between the two techniques, with an exact agreement of 83% and a kappa statistic of 0.77.
  • Summed wall motion scores also showed a significant correlation (r=0.88).

Conclusions:

  • MRI and gated SPECT provide comparable and accurate assessments of LV function and regional wall motion in patients with ischemic cardiomyopathy.
  • The findings suggest that both modalities can be reliably used for evaluating cardiac function in this patient population.

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