頭蓋底部腫瘍におけるMetrizamide CT cisternographyの検討

Metrizamide CT Cisternography in Skull Base Tumors

Ⅰ．はじめに

　GreitzとHindmarsh^9）が1974年に水溶性非イオン性造影剤のMetrizamideをCT-cisternography（以下CTCと略す）に応用して以来，本検査法が髄液循環動態異常や頭蓋底部腫瘍の検出に有効であることが報告されてきた．

　われわれは頭蓋底部腫瘍を疑った23例にMetrizamideによるCTCを施行し，その診断的価値を検討し若干の問題点について考察を加えた．

Twenty-three cases suspected of skull base tumors were examined by CT cisternography (CTC) with CT scanner (EMI 1010) from April, 1977 to March, 1978. The lesions in 20 cases were diagnosed as positive and confirmed by operation and/or autopsies. These include five acoustic neurinomas, six pituitary adenomas, two craniopharyngiomas, two skull base meningiomas, one arachnoid cyst and miscellaneous tumors. Isotonic Metrizamide solution four of 2-10 ml was injected via lumbar route. Patients were kept in 30° Trendelenburg position for 60 minutes until the first scanning.