A magnetic resonance (MR) angiographic protocol was evaluated in the carotid bifurcation with use of a pulse sequence for time-resolved three-dimensional imaging of contrast material kinetics. The enhancement ratio, a quantitative measure of contrast enhancement, indicated that all studies included an image obtained near the peak of the intraarterial concentration of contrast agent (enhancement ratio, 90% ± 9 [standard deviation]). Studies acquired at a higher frame rate (4.1-4.9 seconds) exhibited less venous enhancement (enhancement ratio, 25% ± 16) than studies acquired with slower (6.0-9.6-second) frame rates (enhancement ratio, 46% ± 25).
|Original language||English (US)|
|Number of pages||8|
|State||Published - Jan 1 2001|
- Carotid arteries, MR
- Magnetic resonance (MR), technology
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging