Elimination of T2 artifacts caused by RARE sequence in MRI

H. Takahashi, K. Ogawa, K. Oshio, H. Momoshima

研究成果: Paper査読

抄録

This paper proposes a new method which removes artifacts due to T2 relaxation in Rapid Acquisition with Relaxation Enhancement (RARE) images. The method removes the artifacts by dividing the average of two Hermitian symmetric data points in k-space by a hyperbolic cosine function prior to inverse Fourier transformation. In order to evaluate the effectiveness of the method, computer simulations were done in which T2 distribution was spatially variant. The results showed that the proposed method worked well for spatially variant T2 decay and was less sensitive to noise than the conventional method using the geometric mean of two symmetric points and that using an exponential filter. In addition, the method yielded good results for a wide range of T2 values.

本文言語English
ページ1457-1460
ページ数4
出版ステータスPublished - 1995
外部発表はい
イベントProceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4) - Norfolk, VA, USA
継続期間: 1994 10月 301994 11月 5

Other

OtherProceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4)
CityNorfolk, VA, USA
Period94/10/3094/11/5

ASJC Scopus subject areas

  • 放射線
  • 核物理学および高エネルギー物理学
  • 放射線学、核医学およびイメージング

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