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Volume rendering compared with maximum intensity projection for magnetic resonance angiography measurements of the abdominal aorta

Persson, A; Dahlstrom, N; Engellau, Lena LU ; Larsson, Elna-Marie LU ; Brismar, TB and Smedby, O (2004) In Acta Radiologica 45(4). p.453-459
Abstract
Purpose: To compare the volume rendering technique (VRT) with maximum intensity projection (MIP) for aortic diameter measurements in MR angiography (MRA) data sets. Material and Methods: Existing contrast-enhanced 3-dimensional MRA and digital subtraction angiography (DSA) data sets from 20 patients were analyzed. In each MRA data set, two aortic diameters were measured using MIP and VRT. Agreement with DSA measurements, dependence on rendering parameters, and interobserver agreement were assessed. Results: Diameters measured on MIP with fixed parameters showed no significant difference compared with DSA and with freely selected parameters a slight overestimation relative to DSA. Diameters measured on VRT were larger than on DSA. For both... (More)
Purpose: To compare the volume rendering technique (VRT) with maximum intensity projection (MIP) for aortic diameter measurements in MR angiography (MRA) data sets. Material and Methods: Existing contrast-enhanced 3-dimensional MRA and digital subtraction angiography (DSA) data sets from 20 patients were analyzed. In each MRA data set, two aortic diameters were measured using MIP and VRT. Agreement with DSA measurements, dependence on rendering parameters, and interobserver agreement were assessed. Results: Diameters measured on MIP with fixed parameters showed no significant difference compared with DSA and with freely selected parameters a slight overestimation relative to DSA. Diameters measured on VRT were larger than on DSA. For both MIP and VRT, the measurements depended on the chosen parameters. The error relative to DSA was larger for VRT than for MIP with fixed parameters but not with freely chosen parameters. Interobserver agreement did not differ significantly. Conclusions: VRT is not suitable for diameter measurements of the abdominal aorta with fixed parameter settings but may be useful with User-selected settings. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
angiography (MRA), magnetic resonance, abdominal aortic aneurysm (AAA), angiography, maximum intensity projection (MIP), user dependence, volume rendering technique (VRT)
in
Acta Radiologica
volume
45
issue
4
pages
453 - 459
publisher
John Wiley & Sons
external identifiers
  • pmid:15323400
  • wos:000222685500016
  • scopus:4444373628
ISSN
1600-0455
DOI
10.1080/02841850410006876
language
English
LU publication?
yes
id
ed14f5f1-015d-474e-a95b-0965e6384e1f (old id 272956)
date added to LUP
2007-10-29 14:59:59
date last changed
2017-11-19 04:14:05
@article{ed14f5f1-015d-474e-a95b-0965e6384e1f,
  abstract     = {Purpose: To compare the volume rendering technique (VRT) with maximum intensity projection (MIP) for aortic diameter measurements in MR angiography (MRA) data sets. Material and Methods: Existing contrast-enhanced 3-dimensional MRA and digital subtraction angiography (DSA) data sets from 20 patients were analyzed. In each MRA data set, two aortic diameters were measured using MIP and VRT. Agreement with DSA measurements, dependence on rendering parameters, and interobserver agreement were assessed. Results: Diameters measured on MIP with fixed parameters showed no significant difference compared with DSA and with freely selected parameters a slight overestimation relative to DSA. Diameters measured on VRT were larger than on DSA. For both MIP and VRT, the measurements depended on the chosen parameters. The error relative to DSA was larger for VRT than for MIP with fixed parameters but not with freely chosen parameters. Interobserver agreement did not differ significantly. Conclusions: VRT is not suitable for diameter measurements of the abdominal aorta with fixed parameter settings but may be useful with User-selected settings.},
  author       = {Persson, A and Dahlstrom, N and Engellau, Lena and Larsson, Elna-Marie and Brismar, TB and Smedby, O},
  issn         = {1600-0455},
  keyword      = {angiography (MRA),magnetic resonance,abdominal aortic aneurysm (AAA),angiography,maximum intensity projection (MIP),user dependence,volume rendering technique (VRT)},
  language     = {eng},
  number       = {4},
  pages        = {453--459},
  publisher    = {John Wiley & Sons},
  series       = {Acta Radiologica},
  title        = {Volume rendering compared with maximum intensity projection for magnetic resonance angiography measurements of the abdominal aorta},
  url          = {http://dx.doi.org/10.1080/02841850410006876},
  volume       = {45},
  year         = {2004},
}