Value of magnetic resonance imaging in patients with a recent myocardial infarction: comparison with planar thallium-201 scintigraphy

Cardiovascular and Interventional Radiology
X H KraussA V Bruschke

Abstract

The diagnostic accuracy of spin-echo Magnetic Resonance (MR) imaging in the detection and localization of a recent myocardial infarction (mean 4 days old) was compared to planar thallium-201 scintigraphy in 20 patients with a documented myocardial infarction. A control group of 10 subjects underwent a similar MR imaging procedure without thallium-201 scintigraphy. T1-weighted MR images (TE 30 msec) showed abnormal thinning of the infarcted left ventricular wall during systole (less than 50% of the opposite wall) in 11 patients (55%). On T2-weighted multi-echo MR images, (TE 30-60-90-120 msec) abnormally increased signal intensity was found in 17 patients and coincided with the location of the infarction. Thallium-201 scintigraphy detected the infarction in 18 patients. Comparison of T2-MR imaging and thallium-201 scintigraphy showed concordant findings in 82% of the left ventricular segments. In 9% of segments, thallium uptake was reduced with normal T2-MR and in 9% we found a normal thallium uptake with abnormal T2-MR findings. In all subjects of the control group, T1-MR images were normal, and only one subject showed increased signal intensity on T2-MR images. We conclude that the diagnostic accuracy of MR imaging in detectin...Continue Reading

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Apr 15, 2010·The International Journal of Cardiovascular Imaging·E E van der WallJ J Bax
Feb 23, 2010·The International Journal of Cardiovascular Imaging·E E van der Wall
Jan 1, 1994·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·M SaeedC B Higgins
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May 1, 1994·Journal of Magnetic Resonance Imaging : JMRI·M SaeedC B Higgins
Jan 1, 1996·Journal of Cardiovascular Pharmacology·E E van der WallA V Bruschke

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