日本放射線技術学会雑誌
Online ISSN : 1881-4883
Print ISSN : 0369-4305
ISSN-L : 0369-4305
原著
3.0T MRI装置を用いた血液のアーチファクト抑制を目的とした3D Triple IR FSPGRの開発
藤原 康博松田 豪石森 佳幸山田 和弘福屋 裕子山口 功木村 浩彦宮地 利明
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ジャーナル フリー

2006 年 62 巻 11 号 p. 1560-1565

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抄録

The purpose of this study was to decrease vascular artifacts caused by the in-flow effect in three-dimensional inversion recovery prepared fast spoiled gradient recalled acquisition in the steady state (3D IR FSPGR) at 3.0 Tesla. We developed 3D triple IR (3IR) FSPGR and examined the signal characteristics of the new sequence. We have optimized scan parameters based on simulation, phantom, and in-vivo studies. As a result, optimized parameters (1st TI=600 ms, 3rd TI=500 ms) successfully have produced the vessel signal at more than 40% reduction, while gray-white matter contrast was preserved. Moreover, the reduced artifact was also confirmed by visual inspection of the in-vivo images for which this condition was used. Thus, 3D 3IR FSPGR was a useful sequence for the acquisition of T1-weighted images at 3.0 Tesla.

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© 2006 公益社団法人 日本放射線技術学会
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