Iterative estimation of T2 to correct echo planar magnetic resonance images

Manbir Singh, Koichi Oshio, R. Ricardo Brechner

Research output: Contribution to journalArticle

5 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 languageEnglish
Pages (from-to)795-799
Number of pages5
JournalIEEE Transactions on Nuclear Science
Volume37
Issue number1 pt 2
Publication statusPublished - 1990 Apr
Externally publishedYes

Fingerprint

Inverse transforms
Magnetic resonance
magnetic resonance
Data acquisition
Signal to noise ratio
echoes
Fourier transforms
Computer simulation
data acquisition
signal to noise ratios
computerized simulation
decay
estimates

ASJC Scopus subject areas

  • Nuclear Energy and Engineering

Cite this

Iterative estimation of T2 to correct echo planar magnetic resonance images. / Singh, Manbir; Oshio, Koichi; Brechner, R. Ricardo.

In: IEEE Transactions on Nuclear Science, Vol. 37, No. 1 pt 2, 04.1990, p. 795-799.

Research output: Contribution to journalArticle

Singh, Manbir ; Oshio, Koichi ; Brechner, R. Ricardo. / Iterative estimation of T2 to correct echo planar magnetic resonance images. In: IEEE Transactions on Nuclear Science. 1990 ; Vol. 37, No. 1 pt 2. pp. 795-799.
@article{32a21039a467415ca657cbd5a1eb0161,
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.",
author = "Manbir Singh and Koichi Oshio and Brechner, {R. Ricardo}",
year = "1990",
month = "4",
language = "English",
volume = "37",
pages = "795--799",
journal = "IEEE Transactions on Nuclear Science",
issn = "0018-9499",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "1 pt 2",

}

TY - JOUR

T1 - Iterative estimation of T2 to correct echo planar magnetic resonance images

AU - Singh, Manbir

AU - Oshio, Koichi

AU - Brechner, R. Ricardo

PY - 1990/4

Y1 - 1990/4

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.

UR - http://www.scopus.com/inward/record.url?scp=0025419554&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025419554&partnerID=8YFLogxK

M3 - Article

VL - 37

SP - 795

EP - 799

JO - IEEE Transactions on Nuclear Science

JF - IEEE Transactions on Nuclear Science

SN - 0018-9499

IS - 1 pt 2

ER -