脊髄動静脈奇形に対するSpinal dynamic CTの応用

Application of Spinal Dynamic Computed Tomography in the Diagnosls of Spinal Cord Arteriovenous Malfomlation

I．はじめに

　脊髄動静脈奇形の診断には1960年代後半に発達した選択的脊髄血管造影が主に用いられてきた．本症の診断や治療にCTを利用した報告も散見されるが，いずれも症例数に限りがあり，いまだ系統的な検討はなされていない^1,4,6,7）．今回われわれは造影剤をbolus injectionすることによりdynamic CTを行い，脊髄動静脈奇形の三次元的imageを作成し検討したので以下に報告する．

Seventeen cases of spinal cord arteriovenous mal-formation (AVM) were evaluated by use of spinal dyna-mic computed tomography (CT) . In the intravenous in-jection method, contrast medium was injected bolusly into the median cubital vein. In the intraarterial injec-tion method, contrast medium was injected slowly into the feeding artery.

In both methods, lesions were demonstrated in all cases. Three-dimensional localization of the lesions were more clearly demonstrated in the intraarterial in-jection method. Intravenous injection method was use-ful in the postoperative follow-up study due to its noninvasiveness.