Intracranial circulation: preliminary clinical results with three-dimensional (volume) MR angiography.
The authors assessed the clinical utility of a magnetic resonance angiography technique in the evaluation of intracranial circulation. Eighteen patients with a low likelihood of cerebrovascular disease (control group) and 40 patients with suspected cerebrovascular disease were imaged with a FISP (fast imaging with steady precession) sequence (repetition time of 50 msec, echo time of 15 msec, velocity compensation in the read and section-select directions with acceleration compensation in the read direction, 15 degrees anisotropic volume, and a 1.25-mm partition thickness). Ninety-four percent of images in the control group and 72% of images in the group with cerebrovascular disease were considered useful for diagnosis. This technique can provide accurate images of intracranial circulation and can be performed in conjunction with two-dimensional spin-echo or gradient-echo imaging. It was most useful in the evaluation of patent intracranial aneurysms, vessel displacement, and large-vessel occlusive disease. Disadvantages included limited field of view, persistent signal voids, limited spatial resolution, and inadequate depiction of lesions with slow flow.
Masaryk
T J
TJ
Department of Radiology, University Hospitals of Cleveland, Case Western Reserve University, OH 44106.
Modic
M T
MT
Ross
J S
JS
Ruggieri
P M
PM
Laub
G A
GA
Lenz
G W
GW
Haacke
E M
EM
Selman
W R
WR
Wiznitzer
M
M
Harik
S I
SI
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002536:Cerebral Arteries / Q000473:pathology; D002544:Cerebral Infarction / Q000175:diagnosis; D002560:Cerebrovascular Circulation; D002561:Cerebrovascular Disorders / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D002941:Circle of Willis / Q000473:pathology; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D002532:Intracranial Aneurysm / Q000175:diagnosis; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis; D002542:Intracranial Embolism and Thrombosis / Q000175:diagnosis; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008577:Meningeal Neoplasms / Q000175:diagnosis; D008579:Meningioma / Q000175:diagnosis; D008875:Middle Aged