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Motion associated susceptibility artifacts

Bach-Gansmo, T; Ericsson, A; Leander, Peter LU ; Fahlvik, A K and Hemmingsson, A (1992) In Acta Radiologica 33(6). p.606-610
Abstract
A bowel labeling agent is important for improving abdominal MR. Besides providing contrast between the bowel and other organs, the contrast agent itself is a potential source of artifacts. The artifacts created by superparamagnetic particles (SPP) subjected to motion have been studied in vitro at 0.5 T, and compared to artifacts created by a paramagnetic compound. Apart from the expected static effects of the SPP, movement induced additional artifacts were seen as signal displacements in the phase-encoding direction. The artifacts were obvious at an iron concentration of 1 mg Fe/ml, barely visible at 0.2 mg Fe/ml, and completely absent at 0.1 mg Fe/ml. Artifacts were also evident with the SPP outside the imaging slice. This further... (More)
A bowel labeling agent is important for improving abdominal MR. Besides providing contrast between the bowel and other organs, the contrast agent itself is a potential source of artifacts. The artifacts created by superparamagnetic particles (SPP) subjected to motion have been studied in vitro at 0.5 T, and compared to artifacts created by a paramagnetic compound. Apart from the expected static effects of the SPP, movement induced additional artifacts were seen as signal displacements in the phase-encoding direction. The artifacts were obvious at an iron concentration of 1 mg Fe/ml, barely visible at 0.2 mg Fe/ml, and completely absent at 0.1 mg Fe/ml. Artifacts were also evident with the SPP outside the imaging slice. This further emphasizes the importance of choosing the lowest effective dose when using SPP contrast agents. For the paramagnetic agent, motion propagated artifacts consisted of high and low signal regions in a mosaic pattern. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Radiologica
volume
33
issue
6
pages
606 - 610
publisher
John Wiley & Sons
external identifiers
  • pmid:1449890
  • scopus:0026490176
ISSN
1600-0455
language
English
LU publication?
yes
id
59d20c92-0028-4a21-a590-d5d4f6f68898 (old id 1106631)
date added to LUP
2008-07-31 09:37:48
date last changed
2017-01-01 07:18:33
@article{59d20c92-0028-4a21-a590-d5d4f6f68898,
  abstract     = {A bowel labeling agent is important for improving abdominal MR. Besides providing contrast between the bowel and other organs, the contrast agent itself is a potential source of artifacts. The artifacts created by superparamagnetic particles (SPP) subjected to motion have been studied in vitro at 0.5 T, and compared to artifacts created by a paramagnetic compound. Apart from the expected static effects of the SPP, movement induced additional artifacts were seen as signal displacements in the phase-encoding direction. The artifacts were obvious at an iron concentration of 1 mg Fe/ml, barely visible at 0.2 mg Fe/ml, and completely absent at 0.1 mg Fe/ml. Artifacts were also evident with the SPP outside the imaging slice. This further emphasizes the importance of choosing the lowest effective dose when using SPP contrast agents. For the paramagnetic agent, motion propagated artifacts consisted of high and low signal regions in a mosaic pattern.},
  author       = {Bach-Gansmo, T and Ericsson, A and Leander, Peter and Fahlvik, A K and Hemmingsson, A},
  issn         = {1600-0455},
  language     = {eng},
  number       = {6},
  pages        = {606--610},
  publisher    = {John Wiley & Sons},
  series       = {Acta Radiologica},
  title        = {Motion associated susceptibility artifacts},
  volume       = {33},
  year         = {1992},
}