Iterative estimation of T2 to correct echo planar magnetic resonance images

Manbir Singh; Koichi Oshio; R. Ricardo Brechner

doi:10.1109/23.106717

Iterative estimation of T2 to correct echo planar magnetic resonance images

Manbir Singh, Koichi Oshio, R. Ricardo Brechner

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

An iterative algorithm has been developed to correct for distortions in echo planar images caused by short T2 components. The values of T2 are initially estimated from a set of images produced by the inverse Fourier Transform of the geometric mean of Hermitian symmetric points. The estimated T2 values are then used to compute k-space data, which, when compared with the true data, provide error data sets and corresponding images to iteratively refine the estimates of T2. Images corrected for T2 decay are thereby generated at specified echo times. Computer simulation studies of several phantoms show good convergence under a variety of conditions. This procedure should enable wider data acquisition windows to be utilized in echo planar or spin echo images, leading to better resolution or better signal to noise ratio.

Original language	English
Pages (from-to)	795-799
Number of pages	5
Journal	IEEE Transactions on Nuclear Science
Volume	37
Issue number	2
DOIs	https://doi.org/10.1109/23.106717
Publication status	Published - 1990 Apr
Externally published	Yes

ASJC Scopus subject areas

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

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10.1109/23.106717

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title = "Iterative estimation of T2 to correct echo planar magnetic resonance images",

abstract = "An iterative algorithm has been developed to correct for distortions in echo planar images caused by short T2 components. The values of T2 are initially estimated from a set of images produced by the inverse Fourier Transform of the geometric mean of Hermitian symmetric points. The estimated T2 values are then used to compute k-space data, which, when compared with the true data, provide error data sets and corresponding images to iteratively refine the estimates of T2. Images corrected for T2 decay are thereby generated at specified echo times. Computer simulation studies of several phantoms show good convergence under a variety of conditions. This procedure should enable wider data acquisition windows to be utilized in echo planar or spin echo images, leading to better resolution or better signal to noise ratio.",

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year = "1990",

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AU - Oshio, Koichi

AU - Brechner, R. Ricardo

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N2 - An iterative algorithm has been developed to correct for distortions in echo planar images caused by short T2 components. The values of T2 are initially estimated from a set of images produced by the inverse Fourier Transform of the geometric mean of Hermitian symmetric points. The estimated T2 values are then used to compute k-space data, which, when compared with the true data, provide error data sets and corresponding images to iteratively refine the estimates of T2. Images corrected for T2 decay are thereby generated at specified echo times. Computer simulation studies of several phantoms show good convergence under a variety of conditions. This procedure should enable wider data acquisition windows to be utilized in echo planar or spin echo images, leading to better resolution or better signal to noise ratio.

AB - An iterative algorithm has been developed to correct for distortions in echo planar images caused by short T2 components. The values of T2 are initially estimated from a set of images produced by the inverse Fourier Transform of the geometric mean of Hermitian symmetric points. The estimated T2 values are then used to compute k-space data, which, when compared with the true data, provide error data sets and corresponding images to iteratively refine the estimates of T2. Images corrected for T2 decay are thereby generated at specified echo times. Computer simulation studies of several phantoms show good convergence under a variety of conditions. This procedure should enable wider data acquisition windows to be utilized in echo planar or spin echo images, leading to better resolution or better signal to noise ratio.

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Iterative estimation of T2 to correct echo planar magnetic resonance images

Abstract

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