Centrally fat-saturated three-dimensional magnetic resonance angiography of the abdomen using selective central fat-saturation of k-space
✍ Scribed by Yasuo Amano; Katsuya Takahama; Tsuyoshi Matsuda; Maki Amano; Tatsuo Kumazaki
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 260 KB
- Volume
- 18
- Category
- Article
- ISSN
- 1053-1807
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✦ Synopsis
Abstract
Purpose
To assess the usefulness of centrally fat‐saturated three‐dimensional magnetic resonance (MR) angiography of the abdomen using an elliptical centric view order and selective placement of fat‐saturation pulses in the central 30% portion of the k‐space in terms of fat signal reduction, image contrast of post‐contrast images, and breath‐holding time.
Methods
Fat signal in abdomen and breath‐holding time were compared between centrally fat‐saturated three‐dimensional sequence and partially fat‐saturated three‐dimensional sequence or conventional fat‐saturated three‐dimensional sequence. Abdominal contrast‐enhanced centrally fat‐saturated three‐dimensional MR angiography was obtained at arterial and equilibrium phases, and image quality was quantitatively and visually evaluated.
Results
Centrally fat‐saturated three‐dimensional sequence suppressed fat signal, as did the conventional fat‐saturated three‐dimensional sequence, and the breath‐hold was prolonged only by 1.5 seconds compared to the partially fat‐saturated three‐dimensional sequence. Contrast‐enhanced centrally fat‐saturated three‐dimensional MR angiography provided abdominal MR arteriography with large signal difference between vessels and fat, while venous signal was insufficient at equilibrium phase.
Conclusion
Abdominal contrast‐enhanced centrally fat‐saturated three‐dimensional MR angiography using an elliptical centric view order and selective central fat‐saturation of k‐space reduced fat signal comparable to conventional fat‐saturated three‐dimensional sequence, and provided contrast‐enhanced MR arteriography with high vascular contrast and minimum prolongation of breath‐hold. J. Magn. Reson. Imaging 2003;18:567–574. © 2003 Wiley‐Liss, Inc.