Selective versus nonselective preparation pulses in two-dimensional MP-RAGE imaging of the liver
✍ Scribed by Eduard E. de Lange; John P. Mugler; James A. Bertolina; James R. Brookeman
- Book ID
- 102375531
- Publisher
- John Wiley and Sons
- Year
- 1992
- Tongue
- English
- Weight
- 420 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1053-1807
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The use of a section‐selective preparation pulse in two‐di‐mensional (2D) T1‐weighted magnetization‐prepared rapid gradient‐echo (MP‐RAGE) imaging of the liver was investigated. The images were compared with those obtained with a nonselective pulse. The performances of the sequences were evaluated in 11 patients with 12 focal liver lesions, and lesion‐liver and lesion‐vessel signal difference‐to‐noise ratios (SD/Ns) were calculated. With the section‐selective preparation pulse, small lesions were better differentiated from vessels, and multiple, consecutive images could be obtained at shorter intervals. The mean lesion‐liver SD/N was slightly but not signiticantly greater for images obtained with a selective pulse, while the lesion‐vessel SD/N was significantly greater (P < .01). It is concluded that a section‐selective preparation pulse can improve the clinical utility of the 2D MP‐RAGE sequence in the evaluation of focal liver disease.