1993年6月
AN ASYMMETRIC SLICE PROFILE - SPATIAL ALTERATION OF FLOW SIGNAL RESPONSE IN 3D TIME-OF-FLIGHT NMR ANGIOGRAPHY
MAGNETIC RESONANCE IN MEDICINE
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- 巻
- 29
- 号
- 6
- 開始ページ
- 783
- 終了ページ
- 789
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/mrm.1910290610
- 出版者・発行元
- WILLIAMS & WILKINS
We introduce an asymmetric slice profile technique, which alters the spatial response of the flow signal in 3D time-of-flight NMR angiography. By gradually increasing the flip angle from the inflow to the outflow portions of the slab, the inflow refreshment effect is distributed over a wide slab thickness. The asymmetric slice profile is simply produced by using a Gaussian RF excitation with an overlapping presaturation. The spatial distribution of steady flow signal in a phantom study demonstrated an essential agreement with a numerical simulation. 3D time-of-flight NMR angiography of volunteers' heads using this technique provided a smooth vascular depiction over a wide slab thickness.
- リンク情報
- ID情報
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- DOI : 10.1002/mrm.1910290610
- ISSN : 0740-3194
- PubMed ID : 8350721
- Web of Science ID : WOS:A1993LF39300009