CTによる中脳水道撮影法 : 中脳水道・第四脳室近傍へのアプローチ

概要

論文の詳細を見る
The CT scan techniques appear to have been well established in the diagnosis of neurosurgical diseases. The assessment of the disease in the region of posterior cranial fossa or hydrocephalus often requires detailed information on the circulatory process of cerebrospinal fluid (CSF) from the third ventricle to the cisterna magna via the cerebral aqueduct. However, it is too difficult to visualize this part of the ventricular system on a slice view when the usual scan techniques are used. The purpose of this study is to develop a scan technique which can display the ventricular system from the third ventricle to the cisterna magna on the same slice level. The present study revealed that the aiming CT image is obtained by the following "overlapping" technique ; 5 mm-thick sections are taken every 1.5 mm between 2 and 3 cm posterior to the external auditory meatus with a scan angle of 65° to the Anthropological basal line (ABL). This technique is very useful in assessing patients with an abnormal circulation of CSF and tumors in the posterior cranial fossa.
公益社団法人日本放射線技術学会の論文
1984-09-01