CT用頭部固定具の考案

概要

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Computed tomography for the head and neck has been well developed in both hardware and software, and now is widely utilized as one of useful diagnostic aids. However, there existed a problem on reproductivity because position of the head and neck varied at each positioning. Therefore, in order to obtain reproductive positioning, we devised a head holding apparatus modified from the cephalostat, which consisted of left and right ear rods, and a bite plate in the mouth. The bite plate covered with modelling compound impression materials, fits the upper and lower dentitions. Reliability of the head holding apparatus was tested using a head phantom and a dry skull. Ranges of differences in repeated positioning ±1 mm. in distance and ±1° in angle. It was proved that the head holding apparatus was useful to obtain reproductive positioning, which made it possible to get CT image with high diagnostic ability.
公益社団法人日本放射線技術学会の論文
1981-05-01