A Proposal of Removal Method for T2 Decay Effects in RARE sequence

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1343-1347
Number of pages5
JournalIEEE Transactions on Nuclear Science
Volume42
Issue number4
DOIs
Publication statusPublished - 1995
Externally publishedYes

Fingerprint

Image enhancement
artifacts
proposals
acquisition
image enhancement
augmentation
Fourier transformation
Computer simulation
decay
computerized simulation
filters

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering
  • Nuclear and High Energy Physics

Cite this

A Proposal of Removal Method for T2 Decay Effects in RARE sequence. / Takahashi, H.; Ogawa, K.; Oshio, Koichi; Momoshima, H.

In: IEEE Transactions on Nuclear Science, Vol. 42, No. 4, 1995, p. 1343-1347.

Research output: Contribution to journalArticle

Takahashi, H. ; Ogawa, K. ; Oshio, Koichi ; Momoshima, H. / A Proposal of Removal Method for T2 Decay Effects in RARE sequence. In: IEEE Transactions on Nuclear Science. 1995 ; Vol. 42, No. 4. pp. 1343-1347.
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