小児におけるMetrizamide CT CisternographyおよびCT Ventriculography

PEDIATRIC METRIZAMIDE CT CISTERNOGRAHY AND CT VENTRICULOGRAPHY

I．はじめに

　Computed tomography （CT）^1,11）は，小児頭蓋内疾患の診断にも極めて大きな役割を果しつつあるが，水溶性陽性造影剤metrizamideによる"CSF enhancement"を行つたCTの小児における報告は未だ稀である^3,6）。本法は1974年Greitz　＆　Hindmarshによつて，はじめて報告され^7），CT cisternography （CTC）と称するが，従来のCT，すなわちplain CTおよび静脈内enhan—cementによるCTではみられなかつた脳脊髄液循環動態（CSF dynamics）と，脳室系，脳槽・クモ膜下腔のより詳細な形態の分析を可能にした^6,10）。われわれは37例の小児に本法を施行し，種々の小児頭蓋内病変の診断的価値について検討した（Table 1）。

We have studied the diagnostic value of com-puted tomography with metrizamide CSF enhance-ment in 37 infants.

According to the method of injection, we called CT cisternography, CT ventriculography and CT cystography. These methods were useful for the morphologic and dynamic evaluation of the CSF pathways. We used them especially for the eva-luation of hydrocephalus, skull base tumor, infantile subdural hematoma and its allied diseases, or con-genital cystic lesion such as Dandy-Walker syn-drome.

The side effects in children are much less than those in adults.