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Collateral flow in coarctation of the aorta with magnetic resonance velocity mapping: correlation to morphological imaging of collateral vessels.

Holmqvist, Catarina LU ; Ståhlberg, Freddy LU ; Hanséus, Katarina LU ; Hochbergs, Peter LU ; Sandström, Staffan LU ; Larsson, Elna-Marie LU and Laurin, Sven LU (2002) In Journal of Magnetic Resonance Imaging 15(1). p.39-46
Abstract
PURPOSE: To correlate quantification of collateral flow in aortic coarctation with the morphological visualization of the collateral vessels and to compare different approaches to measurement of collateral flow. MATERIALS AND METHODS: Thirteen children with coarctation were examined with T1-weighted spin-echo (T1-W SE) imaging and 3D contrast-enhanced magnetic resonance angiography (MRA). MR velocity mapping was performed at four levels in the descending aorta. RESULTS: The flow immediately above and below the coarctation did not differ significantly. Measuring within the coarctation resulted in flow overestimation. The increase of flow from proximal to distal aorta was 12 +/- 21% in patients with no or uncertain collaterals and 69 +/- 55%... (More)
PURPOSE: To correlate quantification of collateral flow in aortic coarctation with the morphological visualization of the collateral vessels and to compare different approaches to measurement of collateral flow. MATERIALS AND METHODS: Thirteen children with coarctation were examined with T1-weighted spin-echo (T1-W SE) imaging and 3D contrast-enhanced magnetic resonance angiography (MRA). MR velocity mapping was performed at four levels in the descending aorta. RESULTS: The flow immediately above and below the coarctation did not differ significantly. Measuring within the coarctation resulted in flow overestimation. The increase of flow from proximal to distal aorta was 12 +/- 21% in patients with no or uncertain collaterals and 69 +/- 55% in patients with pronounced collaterals. Spin-echo images and MRA were comparable in visualizing collateral vessels. The visual estimation of collaterals correlated reasonably well with flow quantification MR velocity mapping. CONCLUSION: Collateral flow assessment with MR velocity mapping is an accurate technique for evaluating the hemodynamic importance of a coarctation and is recommended if abundant collaterals are not visualized with spin echo or MRA. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
Infant, Three-Dimensional, Imaging, Computer-Assisted, Image Processing, Human, Female, Contrast Media, Collateral Circulation/*physiology, Preschool, Child, Blood Flow Velocity, Nonparametric, Aortic Coarctation/*physiopathology, Newborn, Linear Models, Magnetic Resonance Angiography/*methods, Male, Statistics
in
Journal of Magnetic Resonance Imaging
volume
15
issue
1
pages
39 - 46
publisher
John Wiley & Sons
external identifiers
  • wos:000174759400006
  • pmid:11793455
  • scopus:0036134660
ISSN
1522-2586
DOI
10.1002/jmri.10036
language
English
LU publication?
yes
id
85ded94e-004a-4a22-946b-a9ef37ca7294 (old id 106611)
alternative location
http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11793455&dopt=Abstract
date added to LUP
2007-07-18 14:10:31
date last changed
2017-06-11 03:54:59
@article{85ded94e-004a-4a22-946b-a9ef37ca7294,
  abstract     = {PURPOSE: To correlate quantification of collateral flow in aortic coarctation with the morphological visualization of the collateral vessels and to compare different approaches to measurement of collateral flow. MATERIALS AND METHODS: Thirteen children with coarctation were examined with T1-weighted spin-echo (T1-W SE) imaging and 3D contrast-enhanced magnetic resonance angiography (MRA). MR velocity mapping was performed at four levels in the descending aorta. RESULTS: The flow immediately above and below the coarctation did not differ significantly. Measuring within the coarctation resulted in flow overestimation. The increase of flow from proximal to distal aorta was 12 +/- 21% in patients with no or uncertain collaterals and 69 +/- 55% in patients with pronounced collaterals. Spin-echo images and MRA were comparable in visualizing collateral vessels. The visual estimation of collaterals correlated reasonably well with flow quantification MR velocity mapping. CONCLUSION: Collateral flow assessment with MR velocity mapping is an accurate technique for evaluating the hemodynamic importance of a coarctation and is recommended if abundant collaterals are not visualized with spin echo or MRA.},
  author       = {Holmqvist, Catarina and Ståhlberg, Freddy and Hanséus, Katarina and Hochbergs, Peter and Sandström, Staffan and Larsson, Elna-Marie and Laurin, Sven},
  issn         = {1522-2586},
  keyword      = {Infant,Three-Dimensional,Imaging,Computer-Assisted,Image Processing,Human,Female,Contrast Media,Collateral Circulation/*physiology,Preschool,Child,Blood Flow Velocity,Nonparametric,Aortic Coarctation/*physiopathology,Newborn,Linear Models,Magnetic Resonance Angiography/*methods,Male,Statistics},
  language     = {eng},
  number       = {1},
  pages        = {39--46},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Magnetic Resonance Imaging},
  title        = {Collateral flow in coarctation of the aorta with magnetic resonance velocity mapping: correlation to morphological imaging of collateral vessels.},
  url          = {http://dx.doi.org/10.1002/jmri.10036},
  volume       = {15},
  year         = {2002},
}