血管造影上描出不能な脳血管奇形に対する大量造影剤遅延CTの有用性

The Usefulness of Prolonged High Dose Delayed Contrast Computed Tomography for the Diagnosis of Intracranial Angiographically Occult Vascular Malformations

I．はじめに

　血管造影上描出不能な脳血管奇形は，Plain CTおよび通常のenhanced CTにて所見のない場合，その診断は非常に困難である．われわれは，大量造影剤遅延CTが診断上非常に有効であった7症例を経験したので，文献的考察を加え報告する．

It is difficult to diagnose angiographically occult vascular malformations. When conventional CT (plain & contrast enhancement) can not demonstrate the lesions, it was impossible to diagnose in the past. We developed a new technique which enabled us to diagnose them.

MATERIALS AND METHODS; Seven cases of spontaneous intracerebral hemorrhage, in which no abnormality was detected by repeated magnified serial angiography with subtraction technique and prolonged injection technique, were examined.