Percutaneous transluminal cerebral angioplasty: serial angiographic follow-up after successful dilatation.
The purposes of this study were to determine the optimal time for initial follow-up angiography, the restenosis rate after successful intracranial percutaneous transluminal cerebral angioplasty (PTCBA), and finally to identify lesion-specific characteristics for predicting successful angioplasty. Thirty-five patients underwent PTCBA with follow-up angiography 3 and 12 months later. Although 27 lesions were adequately dilated, permanent complications occurred in 3 patients. The restenosis rate at 3 months was 29.6 %; patients without restenosis at 3 months remained free from vessel narrowing at 12 months. Restenosis occurred on severe, eccentric lesions, total occlusions or extremely angulated lesions. There was a strong correlation between sufficient dilatation and lower restenosis rate, and concentric and short lesions (type A). We conclude that the optimal time for initial angiographic follow-up is 3 months after PTCBA. PTCBA is most suitable for type A lesions with higher success, lower morbidity and lower restenosis rates.
Mori
T
T
Department of Neurosurgery, Kochi Medical School, Nankoku-city, Japan.
Mori
K
K
Fukuoka
M
M
Arisawa
M
M
Honda
S
S
D000328:Adult; D000368:Aged; D000800:Angioplasty, Balloon; D001921:Brain / Q000098:blood supply; D002545:Brain Ischemia / Q000000981:diagnostic imaging / Q000628:therapy*; D016893:Carotid Stenosis / Q000000981:diagnostic imaging / Q000628:therapy*; D002533:Cerebral Angiography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002537:Intracranial Arteriosclerosis / Q000000981:diagnostic imaging / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D012008:Recurrence; D012039:Regional Blood Flow / Q000502:physiology; D014715:Vertebrobasilar Insufficiency / Q000000981:diagnostic imaging / Q000628:therapy*