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ID 113649
タイトル別表記
Investigation of the Columnar Carbon-scatterer Length for X-ray Spectral Measurement on 320-slice Computed Tomography
著者
笠井, 洋平 徳島大学|徳島赤十字病院
湯浅, 将生 徳島大学
鹿重, 俊哉 徳島大学
松浦, 貴明 徳島大学|広島がん高精度放射線治療センター
キーワード
X-ray CT
X-ray spectrum
length of scatterer
effective energy
characteristic X-ray
資料タイプ
学術雑誌論文
抄録
A short length scatterer is adopted to measure the X-ray spectrum of computed tomography (CT) equipment with a wide irradiation field in the body axis direction. The purpose of this study is to compare X-ray spectra measured using different length scatterers and determine the most appropriate length for the scatterer. 320-slice CT equipment (Aquilion ONE) was used in this study. Circular carbon rods (3 cm diameter) with five different lengths (1‒16 cm) were used as scatterers. The effect of the beam hardening phenomenon from different length carbon rods was evaluated according to the effective energy. The measurement accuracy for photon information was also evaluated based on the photon count corresponding to the characteristic X-ray. As a result, the beam hardening effect was scarcely observed when the 1 cm long scatterer was used, and the number of the photons measured for the characteristic X-ray was the most. Therefore, it was concluded that the 1 cm long circular carbon rod scatterer was the most suitable.
掲載誌名
日本放射線技術学会雑誌
ISSN
03694305
18814883
cat書誌ID
AN00197784
出版者
日本放射線技術学会
71
5
開始ページ
423
終了ページ
427
発行日
2015-05-20
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
jpn
著者版フラグ
出版社版
部局
医学系