[High resolution tridimensional study of the blood vessels of the neck and the intracranial circulation with magnetic resonance angiography].
Magnetic Resonance Angiography (MRA) is a modern vascular imaging technique which allows the noninvasive and direct imaging of vessels. The authors aimed at evaluating the diagnostic accuracy of MRA in the study of pathologic conditions in the neck and intracranial vessels; spatial resolution of the technique was also investigated. Twenty-four healthy volunteers and 82 patients suffering from various diseases of the head and neck vessels were included in the study. First of all, MRA capabilities were investigated in visualizing normal vessels of both neck and intracranial circle. The diagnostic accuracy of the method was then evaluated in the study of vascular diseases, and the results compared with conventional/digital angiographic findings. The comparison demonstrated how stenoses and atherosclerotic plaques tend to be overestimated by MRA because of technical artifacts inherent to the technique itself, whereas vascular ulcerations and aneurysms are frequently underestimated. However, this data was steady and therefore evaluable--the exact knowledge of the artifacts making diagnosis reliable. The diagnostic and technical problems relative to the various vascular diseases are discussed. Finally, several hypotheses of diagnostic iter are suggested.
Villa
A
A
Istituto di Radiologia dell'Università, Pavia.
Di Guglielmo
L
L
Martelli
A
A
Cecchini
A
A
Petsch
R
R
Campani
R
R
Tagliabue
A
A
Rodriguez y Baena
R
R
Nicolato
A
A
D'Amato
M
M
D015901:Angiography, Digital Subtraction; D001488:Basilar Artery / Q000000981:diagnostic imaging / Q000473:pathology*; D002339:Carotid Arteries / Q000000981:diagnostic imaging / Q000473:pathology*; D002533:Cerebral Angiography; D002536:Cerebral Arteries / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009333:Neck / Q000098:blood supply; D014652:Vascular Diseases / Q000175:diagnosis; D014711:Vertebral Artery / Q000000981:diagnostic imaging / Q000473:pathology*
Studio tridimensionale ad alta risoluzione dei vasi del collo e del circolo intracranico con angiografia a risonanza magnetica.