title: [A comparison of ultrafast computed tomography, magnetic resonance angiography and selective angiography for the detection of coronary bypass patency].
abstract: OBJECTIVE
  Validation of ultrafast-CT and MR-angiography (MRA) in comparison with angiography for detection of early postsurgical arterial and venous coronary artery bypass graft (CABG) patency.
  
  
  METHODS
  21 patients with a total of 55 CABG (34 venous and 21 arterial) were studied with angiography, ultrafast-CT (EBT), and MRA.
  
  
  RESULTS
  With EBT, patency of 43/45 angiographically patent CABG could be correctly assessed (sensitivity: 96%). With MRA 26 CABG (17 venous and 9 arterial) were identified as patent (sensitivity: 67%). It was not possible to quantify proximal stenosis of three grafts (> 40%) and to evaluate the distal bypass anastomosis with both EBT and MRA.
  
  
  CONCLUSIONS
  Ultrafast-CT is a promising minimal invasive screening method for the evaluation of venous and arterial CABG patency. The diagnostic significance of MRA is remarkably reduced.
authors.affiliation: Institut für Radiologische Diagnostik, Ludwig-Maximilians-Universität, München Grosshadern.
authors.forename: A
authors.initials: A
authors.lastname: von Smekal
authors.forename: A
authors.initials: A
authors.lastname: Knez
authors.forename: K C
authors.initials: KC
authors.lastname: Seelos
authors.forename: R
authors.initials: R
authors.lastname: Haberl
authors.forename: F
authors.initials: F
authors.lastname: Spiegl
authors.forename: B
authors.initials: B
authors.lastname: Reichart
authors.forename: G
authors.initials: G
authors.lastname: Steinbeck
authors.forename: M
authors.initials: M
authors.lastname: Reiser
mesh_terms: D000368:Aged; D017023:Coronary Angiography / Q000379:methods*; D001026:Coronary Artery Bypass; D003331:Coronary Vessels / Q000473:pathology*; D005069:Evaluation Studies as Topic; D006801:Humans; D007387:Internal Mammary-Coronary Artery Anastomosis; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D011184:Postoperative Period; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014654:Vascular Patency
vernacular_title: Vergleich von ultraschneller Computertomographie, Magnetresonanzangiographie und selektiver Angiographie zum Nachweis der Durchgängigkeit koronarer Bypasses.