title: Coarctation of the aorta: collateral flow assessment with phase-contrast MR angiography.
abstract: OBJECTIVE
  The purpose of this report is to describe a new use of MR imaging in coarctation of the aorta. The specific question addressed was how well collateral blood flow in intercostal arteries, as determined by phase-contrast MR angiography, correlated with findings during surgery or catheterization in patients with coarctation of the aorta.
  
  
  CONCLUSIONS
  Phase-contrast MR angiography is an excellent technique for detecting the presence or absence of collateral blood flow in the intercostal arteries of patients with coarctation of the aorta. Knowing whether collateral blood flow is present in patients with narrowing of the juxtaductal aorta should help assess the clinical hemodynamic significance of the coarctation.
authors.affiliation: Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: P R
authors.initials: PR
authors.lastname: Julsrud
authors.forename: J F
authors.initials: JF
authors.lastname: Breen
authors.forename: J P
authors.initials: JP
authors.lastname: Felmlee
authors.forename: C A
authors.initials: CA
authors.lastname: Warnes
authors.forename: H M
authors.initials: HM
authors.lastname: Connolly
authors.forename: H V
authors.initials: HV
authors.lastname: Schaff
mesh_terms: D000328:Adult; D000368:Aged; D001017:Aortic Coarctation / Q000473:pathology / Q000503:physiopathology*; D003097:Collateral Circulation / Q000502:physiology*; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged