CT-Scanncrへの対応と技術的諸問題

概要

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As CT system in using computer and cross section tomography (CT) have been popularizing in Japan, it became markedly the center of interest on CT installation. We have done several experiments on the basis of our experience in using EMI-CT-1000 from last year. Results obtained in this experiment were as follows ; 1. When a concentration of 60% conrey was diluted to 2^3 times a hole of 1 mm diameter in Mix DP phantom could be distinguished until 4 mm diameter of hole in the case of water. 2. When an absorption for X-rays of substance in hole was larger than that of around substance, the hole size in polaroid film was big in comparing with the life size. 3. The hole size could be got near to the life size in changing the window level and window width with response to the concentration of conrey. 4. Exposure dose of patient was low comparing CT scanning to cronial radiography. 5. An exposure dose could be reduced, if the sinistal position was applied in test of orbit of eyes due to get out of the way of direct exposure to that showed high radiosensitivity.
公益社団法人日本放射線技術学会の論文
1978-05-01