[Magnetic resonance in the characterization of atherosclerotic lesions].
Fifty-one patients with occlusive and dilating vascular diseases were evaluated with MR imaging, using T1 and T2-weighted sequences and an 0.5 T superconducting magnet. Atheromatous plaques were detected in the carotids and on the aortic walls. Fatty lesions had high signal intensity on T1-weighted sequences and could be well distinguished from older thrombotic depositions which presented with medium signal intensity on T1-weighted scans and low signal on T2-weighted images. Thrombotic depositions in aneurysmal dilatation of the aorta and carotid arteries could be distinguished from patent internal lumen; inside them, areas of different signal intensity were demonstrated, which were related to the paramagnetic effect of hemoglobin degradation products (hemosiderin and methemoglobin).
Di Cesare
E
E
Cattedra di Radiologia, Centro Interdipartimentale di RMN.
Pavone
P
P
Di Renzi
P
P
Simonetti
C
C
Marino
G
G
Ventura
M
M
Gallucci
M
M
Passariello
R
R
Di Rienzi
P
P
D001012:Aorta, Abdominal; D001014:Aortic Aneurysm / Q000175:diagnosis; D001018:Aortic Diseases / Q000175:diagnosis*; D001161:Arteriosclerosis / Q000175:diagnosis*; D002340:Carotid Artery Diseases / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004691:Endarterectomy; D006485:Hemosiderin / Q000032:analysis; D006801:Humans; D008279:Magnetic Resonance Imaging; D008706:Methemoglobin / Q000032:analysis; D013927:Thrombosis / Q000175:diagnosis
D008706:Methemoglobin; D006485:Hemosiderin
La risonanza magnetica nella caratterizzazione delle lesioni aterosclerotiche.