[Evaluation of EC-IC bypass flow by MR angiography using the presaturation technique].
MR angiography studies using the presaturation technique were performed in 7 patients who had received extra-intracranial (EC-IC) bypass surgery. With presaturation on the bypass vessels, disappearance of intracranial vascular signals suggests bypass effect. In our studies, good bypass effect was shown in 3 cases and poor effect in 2 cases, which correlates well to concurrent angiography. In two cases, bypass effect was shown only in a few cortical branches of MCA, but angiography confirmed recanalization of occluded internal carotid artery in one case, and growth of large network of transdural anastomoses in the other.
Nambu
T
T
Department of Radiology, Kushiro Rosai Hospital.
Mabuchi
S
S
Itamoto
K
K
Isu
T
T
D000328:Adult; D000368:Aged; D002548:Cerebral Revascularization; D002560:Cerebrovascular Circulation / Q000502:physiology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged