Optimization of Three-dimensional Triple IR Fast Spoiled Gradient Recalled Acquisition in the Steady State(FSPGR)to Decrease Vascular Artifact at 3.0 Tesla

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  • Fujiwara Yasuhiro
    Department of Radiology, University of Fukui Hospital Division of Health Sciences, Graduate School of Medical Science, Kanazawa University
  • Matsuda Tsuyoshi
    GE Medical Systems, Imaging Application Tech Center
  • Ishimori Yoshiyuki
    Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences
  • Yamada Kazuhiro
    Department of Radiology, Ibaraki Iseikai Hospital
  • Fukuya Yuko
    Department of Radiology, University of Fukui Hospital
  • Yamaguchi Isao
    Department of Radiology, University of Fukui Hospital Division of Health Sciences, Graduate School of Medical Science, Kanazawa University
  • Kimura Hirohiko
    Department of Radiology, Faculty of Medical Sciences, University of Fukui
  • Miyati Tosiaki
    Division of Health Sciences, Graduate School of Medical Science, Kanazawa University

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  • 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
  • 3 0T MRI ソウチ オ モチイタ ケツエキ ノ アーチファクト ヨクセイ オ モクテキ ト シタ 3D Triple IR FSPGR ノ カイハツ

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Abstract

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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