title: MR angiography of the lower extremities with a moving-bed infusion-tracking technique.
abstract: OBJECTIVE
  To assess the value of MR angiography (MRA) with automatic table movement in a consecutive series of patients with peripheral arterial disease.
  
  
  METHODS
  Seventy-two patients underwent both conventional angiography (CA) and MRA for peripheral arterial occlusive disease. Both techniques were scored in a masked way. Consensus scoring for CA was compared with MRA scoring per observer. If there was a discrepancy in scoring of a segment on MRA and CA, the images were reviewed and a consensus arrived at.
  
  
  RESULTS
  Observer A found 7.4% and observer B found 6.5% of the segments could not be analyzed on MRA. Observer A scored 11.4% dissimilar on MRA and CA, observer B 15.2%. In the aortoiliac arteries, this was mainly caused by stents and overestimation of stenoses; in the crural arteries it resulted from underestimation of the stenoses on MRA. Overall sensitivity and specificity for the aortoiliac, femoropopliteal and crural vessels were respectively 90% and 91%, 90% and 96%, 59% and 96% for observer A, and 85% and 91%, 84% and 89%, 68% and 85% for observer B.
  
  
  CONCLUSIONS
  Although MRA of the lower extremities is a promising technique, improvements still need to be made. In particular, MRA below the knee is suboptimal for clinical use.
authors.affiliation: Department of Radiology, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.
authors.forename: W M
authors.initials: WM
authors.lastname: Klein
authors.forename: P M
authors.initials: PM
authors.lastname: Schlejen
authors.forename: B C
authors.initials: BC
authors.lastname: Eikelboom
authors.forename: Y
authors.initials: Y
authors.lastname: van der Graaf
authors.forename: W P T M
authors.initials: WP
authors.lastname: Mali
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007866:Leg / Q000098:blood supply*; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D016491:Peripheral Vascular Diseases / Q000175:diagnosis*; D012680:Sensitivity and Specificity