Abstract
In studies of transmural myocardial function, acquisitions of high spatial and temporal resolution tagged cardiac images often exceed the practical time limit for breath-hold fast imaging techniques. Therefore, a dual cardiac-respiratory gating device has been constructed to acquire SPAMM- tagged cardiac MR images at or near end-expiration during spontaneous breathing, by providing an external trigger to a conventional MRI system. Combined cardiac and respiratory gating essentially eliminates the respiratory motion artifacts in tagged cardiac MR images. Compared to cardiac-gated images obtained during intermittent breath-holds, cardiac- respiratory gated images show improved tag-myocardium contrast due to magnetization recovery during inspiration. (C) 2000 Wiley-Liss, Inc.
Original language | English (US) |
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Pages (from-to) | 314-318 |
Number of pages | 5 |
Journal | Magnetic resonance in medicine |
Volume | 43 |
Issue number | 2 |
DOIs | |
State | Published - 2000 |
Keywords
- Cardiac and respiratory gating
- Cardiac imaging
- Motion artifacts
- Tagging
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging