title: Diagnostic performance of digital subtraction angiography (DSA) and magnetic resonance angiography (MRA): preliminary results in vascular occlusive disease of the abdominal and lower-extremity arteries.
abstract: Fifty-nine patients with occlusive disease of the aorto-iliac and femoro-popliteal arteries were investigated prospectively by intravenous (IV) or intraarterial (IA) digital subtraction angiography (DSA) and magnetic resonance angiography (MRA). This was accomplished using a two-dimensional (2D) Inflow- (59 patients) and a 2D Phase Contrast- (RSE--rapid sequential excitation) sequence (29 patients). The spectrum of pathology included stenoses < 50%, stenoses 50-89%, stenoses 90-99%, occlusions, aneurysms and status following reconstructive surgery. MRA- and DSA-examinations were evaluated by four radiologists. The diagnoses were made by consent decisions of a radiologist and a vascular surgeon based on clinical and radiological findings. Diagnostic performance of IA-DSA was superior to all other imaging modalities. Vascular delineation of 2D Inflow-MRA was comparable to that of IV-DSA. The image quality of RSE-MRA was not adequate for diagnosis. In conclusion, 2D Inflow-MRA is a promising method for evaluating abdominal and peripheral arteriosclerotic disease. Interpretation of MR-angiograms, however, requires profound knowledge of MRA-techniques, X-ray angiography and hemodynamics.
authors.affiliation: Department of Radiology, University of Cologne, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Krug
authors.forename: H
authors.initials: H
authors.lastname: Kugel
authors.forename: U
authors.initials: U
authors.lastname: Harnischmacher
authors.forename: W
authors.initials: W
authors.lastname: Heindel
authors.forename: R
authors.initials: R
authors.lastname: Fischbach
authors.forename: A
authors.initials: A
authors.lastname: Altenburg
authors.forename: F
authors.initials: F
authors.lastname: Krings
mesh_terms: D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction; D001012:Aorta, Abdominal; D001018:Aortic Diseases / Q000175:diagnosis*; D001157:Arterial Occlusive Diseases / Q000175:diagnosis*; D003251:Constriction, Pathologic / Q000175:diagnosis; D005069:Evaluation Studies as Topic; D005263:Femoral Artery; D006801:Humans; D007083:Iliac Artery; D018810:Magnetic Resonance Angiography; D008875:Middle Aged; D015588:Observer Variation; D011150:Popliteal Artery; D011446:Prospective Studies