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High-resolution diffusion imaging using phase-corrected segmented echo-planar imaging

Brockstedt, Sara LU ; Moore, J R; Thomsen, C; Holtås, Stig LU and Ståhlberg, Freddy LU (2000) In Magnetic Resonance Imaging 18(6). p.649-657
Abstract
Diffusion magnetic resonance imaging (MRI) was performed with a high-resolution segmented echo-planar imaging technique, which provided images with substantially less susceptibility artifacts than images obtained with single-shot echo-planar imaging (EPI). Diffusion imaging performed with any multishot pulse sequence is inherently sensitive to motion artifacts and in order to reduce motion artifacts, the presented method utilizes navigator echo phase corrections, performed after a one-dimensional Fourier transform along the frequency-encoding direction. Navigator echo phases were fitted to a straight line prior to phase correction to avoid errors from internal motion. In vivo imaging was performed using electro cardiographic (ECG)... (More)
Diffusion magnetic resonance imaging (MRI) was performed with a high-resolution segmented echo-planar imaging technique, which provided images with substantially less susceptibility artifacts than images obtained with single-shot echo-planar imaging (EPI). Diffusion imaging performed with any multishot pulse sequence is inherently sensitive to motion artifacts and in order to reduce motion artifacts, the presented method utilizes navigator echo phase corrections, performed after a one-dimensional Fourier transform along the frequency-encoding direction. Navigator echo phases were fitted to a straight line prior to phase correction to avoid errors from internal motion. In vivo imaging was performed using electro cardiographic (ECG) triggering. Apparent diffusion coefficient (ADC) maps were calculated on a pixel-by-pixel basis using up to seven diffusion sensitivities, ranging from b = 0 to 1129 x 10(6) s/m(2). (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Phase corrections, High resolution, Diffusion imaging, Segmented EPI, Ischemic stroke
in
Magnetic Resonance Imaging
volume
18
issue
6
pages
649 - 657
publisher
Elsevier
external identifiers
  • pmid:10930774
  • scopus:0033870313
ISSN
1873-5894
DOI
10.1016/S0730-725X(00)00159-4
language
English
LU publication?
yes
id
1089cc44-e388-4a1f-9c1c-2013d4315d76 (old id 1117059)
date added to LUP
2008-07-02 15:53:09
date last changed
2017-03-12 03:32:10
@article{1089cc44-e388-4a1f-9c1c-2013d4315d76,
  abstract     = {Diffusion magnetic resonance imaging (MRI) was performed with a high-resolution segmented echo-planar imaging technique, which provided images with substantially less susceptibility artifacts than images obtained with single-shot echo-planar imaging (EPI). Diffusion imaging performed with any multishot pulse sequence is inherently sensitive to motion artifacts and in order to reduce motion artifacts, the presented method utilizes navigator echo phase corrections, performed after a one-dimensional Fourier transform along the frequency-encoding direction. Navigator echo phases were fitted to a straight line prior to phase correction to avoid errors from internal motion. In vivo imaging was performed using electro cardiographic (ECG) triggering. Apparent diffusion coefficient (ADC) maps were calculated on a pixel-by-pixel basis using up to seven diffusion sensitivities, ranging from b = 0 to 1129 x 10(6) s/m(2).},
  author       = {Brockstedt, Sara and Moore, J R and Thomsen, C and Holtås, Stig and Ståhlberg, Freddy},
  issn         = {1873-5894},
  keyword      = {Phase corrections,High resolution,Diffusion imaging,Segmented EPI,Ischemic stroke},
  language     = {eng},
  number       = {6},
  pages        = {649--657},
  publisher    = {Elsevier},
  series       = {Magnetic Resonance Imaging},
  title        = {High-resolution diffusion imaging using phase-corrected segmented echo-planar imaging},
  url          = {http://dx.doi.org/10.1016/S0730-725X(00)00159-4},
  volume       = {18},
  year         = {2000},
}