Abstract
Purpose: To develop and test a delayed-enhancement imaging method for improving the contrast between myocardial infarction (MI) and blood pool. Materials and Methods: The T2 of blood Is significantly longer than that of acute or chronic MI. The proposed multicontrast delayed-enhancement (MCODE) Imaging method produces a series of images with both T1 and T2 weightings, which provides both excellent contrast between normal and infarcted myocardium, and between blood and MI. Results: The subendocardial border between MI and blood pool was easily discriminated in the T 2-weighted image. The measured MI-to-blood contrast-to-noise ratio (CNR) was better in the T2-weighted image than in the T 1-weighted Image (22.5 ± 8.7 vs. 2.9 ± 3.1, mean ± SD, N = 11, P <0.001, for TrueFISP, and 19.4 ± 10.8 vs. 3.9 ± 2.3, N = 11, P <0.001, for TurboFLASH). Conclusion: The MCODE method provides a significant improvement in the ability to easily discriminate subendocardial MI by providing a T2-weighted image with high contrast between blood and MI. MCODE should improve both the detection and accurate sizing of MI.
Original language | English (US) |
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Pages (from-to) | 605-613 |
Number of pages | 9 |
Journal | Journal of Magnetic Resonance Imaging |
Volume | 22 |
Issue number | 5 |
DOIs | |
State | Published - Nov 2005 |
Externally published | Yes |
Keywords
- Delayed enhancement
- Inversion recovery
- MRI
- Myocardial infarction
- Parallel MRI
- Phase-sensitive
- SENSE
- T-weighted
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Radiological and Ultrasound Technology