Correction of off resonance-related distortion in echo-planar imaging using EPI-based field maps

Paul J. Reber; Eric C. Wong; Richard B. Buxton; Lawrence R. Frank

doi:10.1002/mrm.1910390223

Correction of off resonance-related distortion in echo-planar imaging using EPI-based field maps

Paul J. Reber, Eric C. Wong^*, Richard B. Buxton, Lawrence R. Frank

^*Corresponding author for this work

Psychology

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

193 Scopus citations

Abstract

We present, here, a simple method for measurement and correction of off- resonance related geometric distortion in echo-planar imaging (EPI). This method uses high signal-to-noise ratio (SNR) EPI-based field maps, rapidly acquired using a series of gradient recalled images collected across a range of TE values. This field map is distorted in the same manner as the EPI images to be unwarped, providing a direct look-up table for the correct location of each pixel of data. This method adds very little scan time and is robust and easy to implement.

Original language	English (US)
Pages (from-to)	328-330
Number of pages	3
Journal	Magnetic resonance in medicine
Volume	39
Issue number	2
DOIs	https://doi.org/10.1002/mrm.1910390223
State	Published - Feb 1998

Keywords

Echo-planar imaging
Field map correction
Geometric distortion

ASJC Scopus subject areas

Radiology Nuclear Medicine and imaging

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10.1002/mrm.1910390223

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title = "Correction of off resonance-related distortion in echo-planar imaging using EPI-based field maps",

abstract = "We present, here, a simple method for measurement and correction of off- resonance related geometric distortion in echo-planar imaging (EPI). This method uses high signal-to-noise ratio (SNR) EPI-based field maps, rapidly acquired using a series of gradient recalled images collected across a range of TE values. This field map is distorted in the same manner as the EPI images to be unwarped, providing a direct look-up table for the correct location of each pixel of data. This method adds very little scan time and is robust and easy to implement.",

keywords = "Echo-planar imaging, Field map correction, Geometric distortion",

author = "Reber, {Paul J.} and Wong, {Eric C.} and Buxton, {Richard B.} and Frank, {Lawrence R.}",

year = "1998",

month = feb,

doi = "10.1002/mrm.1910390223",

language = "English (US)",

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T1 - Correction of off resonance-related distortion in echo-planar imaging using EPI-based field maps

AU - Reber, Paul J.

AU - Wong, Eric C.

AU - Buxton, Richard B.

AU - Frank, Lawrence R.

PY - 1998/2

Y1 - 1998/2

N2 - We present, here, a simple method for measurement and correction of off- resonance related geometric distortion in echo-planar imaging (EPI). This method uses high signal-to-noise ratio (SNR) EPI-based field maps, rapidly acquired using a series of gradient recalled images collected across a range of TE values. This field map is distorted in the same manner as the EPI images to be unwarped, providing a direct look-up table for the correct location of each pixel of data. This method adds very little scan time and is robust and easy to implement.

AB - We present, here, a simple method for measurement and correction of off- resonance related geometric distortion in echo-planar imaging (EPI). This method uses high signal-to-noise ratio (SNR) EPI-based field maps, rapidly acquired using a series of gradient recalled images collected across a range of TE values. This field map is distorted in the same manner as the EPI images to be unwarped, providing a direct look-up table for the correct location of each pixel of data. This method adds very little scan time and is robust and easy to implement.

KW - Echo-planar imaging

KW - Field map correction

KW - Geometric distortion

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JO - Magnetic resonance in medicine

JF - Magnetic resonance in medicine

IS - 2

ER -

Correction of off resonance-related distortion in echo-planar imaging using EPI-based field maps

Abstract

Keywords

ASJC Scopus subject areas

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