Usefulness of two-dimensional time-of-flight MR angiography combined with surface anatomy scanning for convexity lesions.
Thirty-eight patients with convexity lesions were studied prospectively with the two-dimensional time-of-flight (2D-TOF) magnetic resonance angiography (MRA) method. Of these 21 cases had additional surface anatomy scanning (SAS) and 7 cases had three-dimensional phase contrast (3D-PC) MRA. The findings were compared during surgery and the predictability of 2D-TOF evaluated. 2D-TOF was obtained with 2 mm slice thickness after the administration of contrast media for routine magnetic resonance imaging (MRI). Cortical veins were visualized with a good resolution with a scan time of only 5 minutes. The tumor was also visible in the background, due to enhancement, and thus the tumor-vessels relation was shown. Slow-flow vessels were also adequately seen. SAS was done at the same sitting with fast spin echo (FSE) with a scan time of 3 minutes. Once both images were incorporated, information on gyri and their relation to the lesions and vasculature could be obtained from a single image. We found 2D-TOF alone, or at times in combination with SAS, useful for planning of operation for convexity lesions.
Pant
B
B
Department of Neurosurgery, Hiroshima University School of Medicine, Japan.
Sumida
M
M
Kurisu
K
K
Arita
K
K
Ikawa
F
F
Migita
K
K
Kutsuna
M
M
Uozumi
T
T
D000293:Adolescent; D000328:Adult; D000368:Aged; D000465:Algorithms; D001783:Blood Flow Velocity / Q000502:physiology; D001932:Brain Neoplasms / Q000098:blood supply* / Q000175:diagnosis / Q000556:secondary; D002550:Cerebral Veins / Q000473:pathology; D002648:Child; D002675:Child, Preschool; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D005909:Glioblastoma / Q000098:blood supply / Q000175:diagnosis; D006392:Hemangioma, Cavernous / Q000098:blood supply / Q000175:diagnosis; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation*; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis; D018810:Magnetic Resonance Angiography / Q000295:instrumentation*; D008297:Male; D008577:Meningeal Neoplasms / Q000098:blood supply / Q000175:diagnosis; D008579:Meningioma / Q000098:blood supply / Q000175:diagnosis; D008875:Middle Aged; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives
D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D019786:Gadolinium DTPA