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KMID : 1103720070560010025
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Journal of the Korean Society of Radiology
2007 Volume.56 No. 1 p.25 ~ p.31
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The Usefulness of Stress Perfusion MR using Steady State Free Precession Sequence for Depiction of Significant Coronary Artery Stenosis
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Jeong Se-Young
Lee Whal
Park Jae-Hyung
Choi Sang-Il
Kim Dong-Hun
Choi Dong-Ju
Lim Chung
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Abstract
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Purpose: To evaluate the technical performance of stress myocardial perfusion magnetic resonance (MR) imaging using saturation-recovery steady-state free precession (SR- SSFP) and to assess the diagnostic accuracy of this examination for depiction of significant coronary artery stenosis.
Materials and Methods: 167 patients underwent stress myocardial perfusion MR imaging at rest and adenosine-induced stress by using a 1.5-T cardiac MR imaging unit. The first-pass MR perfusion was performed using SR-SSFP sequence. Coronary angiography was performed in 113 patients. Image analysis was performed to compare the diagnostic accuracy of MR imaging with that of coronary angiography.
Results: During the MR examination, minor side effects of adenosine-induced stress occurred, most commonly chest discomfort (29%), followed by dyspnea (4%), and facial flushing (0.8%). The overall sensitivity of MR imaging for depicting at least one coronary artery with significant stenosis was 91%. The sensitivities of MR imaging for depiction of stenoses were as follows: 80% for single-vessel stenosis, 81% for double-vessel stenosis, and 100% for triple-vessel stenosis.. The specificity of MR imaging for identification of patients with significant coronary artery stenosis was 78%.
Conclusion: Stress myocardial magnetic resonance (MR) perfusion imaging using SR-SSFP sequence is safe and useful for the detection of significant coronary artery disease.
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KEYWORD
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Myocardium, Magnetic resonance(MR), Coronary vessels, disease
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