Advanced

Optimizing conventional cardiac MRI in the rabbit at 0.3 T

Malmgren, N; Laurin, Sven LU ; Ståhlberg, Freddy LU and Holtås, Stig LU (1993) In Pediatric Radiology 23(6). p.439-441
Abstract
The aim of this study was to define the most efficient way of performing cardiac MRI for anatomic information in small experimental animals, using a vertical magnetic field with a strength of 0.3 T (FONAR beta-3000M). This information may be used to improve cardiac MRI in infants and small children, since the size of a rabbit is considered comparable to that of a neonate. Experimental axial cardiac MRI studies were performed in a rabbit under general anesthesia in order to study the effects on image quality of changing various imaging parameters. These are ECG-gating, number of excitations (averages), number of warp levels, echo time (TE) and repetition time (TR). The effects of changing the size of the field of view (FOV), the slice... (More)
The aim of this study was to define the most efficient way of performing cardiac MRI for anatomic information in small experimental animals, using a vertical magnetic field with a strength of 0.3 T (FONAR beta-3000M). This information may be used to improve cardiac MRI in infants and small children, since the size of a rabbit is considered comparable to that of a neonate. Experimental axial cardiac MRI studies were performed in a rabbit under general anesthesia in order to study the effects on image quality of changing various imaging parameters. These are ECG-gating, number of excitations (averages), number of warp levels, echo time (TE) and repetition time (TR). The effects of changing the size of the field of view (FOV), the slice thickness and the phase-encoding direction were also studied. We found that ECG-gating was crucial and that three excitations, TE 16 ms, and 257 vertical phase-encoding warp levels were adequate. Five-millimeter slice thickness and FOV 20 cm were preferred. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Pediatric Radiology
volume
23
issue
6
pages
439 - 441
publisher
Springer
external identifiers
  • pmid:8255646
  • scopus:0027453482
ISSN
1432-1998
DOI
10.1007/BF02012443
language
English
LU publication?
yes
id
ba45bc37-b40c-4aac-b80d-f5606414d188 (old id 1107137)
date added to LUP
2008-07-30 12:10:59
date last changed
2017-01-01 07:00:38
@article{ba45bc37-b40c-4aac-b80d-f5606414d188,
  abstract     = {The aim of this study was to define the most efficient way of performing cardiac MRI for anatomic information in small experimental animals, using a vertical magnetic field with a strength of 0.3 T (FONAR beta-3000M). This information may be used to improve cardiac MRI in infants and small children, since the size of a rabbit is considered comparable to that of a neonate. Experimental axial cardiac MRI studies were performed in a rabbit under general anesthesia in order to study the effects on image quality of changing various imaging parameters. These are ECG-gating, number of excitations (averages), number of warp levels, echo time (TE) and repetition time (TR). The effects of changing the size of the field of view (FOV), the slice thickness and the phase-encoding direction were also studied. We found that ECG-gating was crucial and that three excitations, TE 16 ms, and 257 vertical phase-encoding warp levels were adequate. Five-millimeter slice thickness and FOV 20 cm were preferred.},
  author       = {Malmgren, N and Laurin, Sven and Ståhlberg, Freddy and Holtås, Stig},
  issn         = {1432-1998},
  language     = {eng},
  number       = {6},
  pages        = {439--441},
  publisher    = {Springer},
  series       = {Pediatric Radiology},
  title        = {Optimizing conventional cardiac MRI in the rabbit at 0.3 T},
  url          = {http://dx.doi.org/10.1007/BF02012443},
  volume       = {23},
  year         = {1993},
}