3.CTの被曝について(II.CT装置の性能管理について)

概要

論文の詳細を見る
Radiation dose to the patients delivered by a CT scanner was evaluated using a different kind of dosimetry system and the following conclusions were obtained. 1. The radiation dose in the multiple slices could be calculated by cumulating each single dose and therefore the dose distribution curve was correctly obtained by a film dosimetry system in use of energy-matched film. 2. In calculating the radiation dose, the overlapping exposures should be considered because the dose across the scan plane for a single slice was widely distributed. A single axial dose and number of slices should be needed for the consideration. 3. The total radiation dose could be estimated by multiplying the number of slices and the area under a single dose curve. The dose was saturated by about 9 slices. To obtain a correct exposure dose, a long pencil-type ionization chamber was suitable, covering widely separated curve tails.
公益社団法人日本放射線技術学会の論文
1982-09-01