[Magnitude contrast angiography in peripheral arterial occlusive disease of the lower extremities].
OBJECTIVE
To assess the clinical value of magnitude contrast angiography in arteriosclerosis of the lower limb.


METHODS
187 examinations were done in 105 patients with arteriosclerotic lesions of the femoropopliteal vessels. The MRA results were compared to DSA and conventional angiography. 36 patients were investigated before and after angioplasty.


RESULTS
Occlusions were detected correctly in all cases. In mild and moderate stenoses there was 90% agreement. High-grade stenoses may simulate occlusions. All interruptions of the signal with a length of 1 to 10 mm have to be read as high-grade stenoses (MRA sensitivity was 0.96 and specificity 0.94). In patients with low cardiac output MRA may be advantageous in comparison to DSA: collaterals and vessels distal to occlusions were visualized better in MRA. Axial scans show morphology of stenoses and occlusions and influenced the choice of treatment in 6 cases. In 3 cases, thrombotic material and calcified plaque were distinguished. After angioplasty vessel wall lesions such as dissection of the intima or compressed plaque inside the vessel wall were well visualized. Agreement was 92% with MRA as opposed to lesser values with DSA.
Boos
M
M
Radiologische Klinik im Klinikum Wuppertal-Barmen.
Schlegel
E
E
Cramer
B M
BM
D015901:Angiography, Digital Subtraction / Q000379:methods; D000800:Angioplasty, Balloon; D001157:Arterial Occlusive Diseases / Q000175:diagnosis* / Q000628:therapy; D005263:Femoral Artery / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D007866:Leg / Q000098:blood supply*; D018810:Magnetic Resonance Angiography / Q000295:instrumentation / Q000379:methods*; D011150:Popliteal Artery / Q000000981:diagnostic imaging / Q000473:pathology; D012189:Retrospective Studies; D015912:Thrombolytic Therapy
Magnitude-Contrast-Angiographie bei peripherer arterieller Verschlusskrankheit der unteren Extremitäten.