Abstract
Three-dimensional (3D) steady-state free precession (SSFP) MRI sequences are often applied to visualize both intra- and extracardiac pathologies. In the present study the contrast behavior of 3D true fast imaging with steady precession (True-FISP) sequences for cardiac imaging was optimized in numerical simulations and compared with measurements obtained in eight healthy volunteers on a 1.5 T whole-body scanner. Two SS preparation schemes in combination with and without a T2 preparation were assessed to improve contrast between blood and myocardium using a navigator-gated and ECG-triggered 3D True-FISP sequence. Numerical simulations and experimental studies in volunteers showed that an SS preparation using a constant flip angle (CFA) is preferable to a linear flip angle (LFA) preparation in terms of contrast between blood and myocardium. The optimized 3D True-FISP sequence provides a reliable, accurate, and time-efficient means of obtaining a morphological cardiac diagnosis.
Original language | English (US) |
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Pages (from-to) | 213-219 |
Number of pages | 7 |
Journal | Magnetic resonance in medicine |
Volume | 57 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2007 |
Keywords
- Blood-myocardial contrast
- Steady-state preparation
- T preparation
- True-FISP
- Whole-heart MRI
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging