@article{oai:kumadai.repo.nii.ac.jp:00024762, author = {Nagasue, Nozomu and Funama, Yoshinori and Oniki, Rika and Segawa, Atsushi and Iwatake, Satoshi and Kawachino, Tomohiko and Uetani, Masataka and 永末, 望 and 船間, 芳憲 and 鬼木, 里佳 and 瀬川, 敦史 and 岩竹, 聡 and 川内野, 友彦 and 上谷, 雅孝}, issue = {6}, journal = {日本放射線技術学会雑誌}, month = {Jul}, note = {application/pdf, 論文(Article), We measured the contrast-to-noise ratio (CNR) and evaluated low-contrast images and streak artifacts to optimize abdominal C-arm CT imaging, and we investigated the view number, acquisition matrix, and pixel depth. To measure CNR, we filled 0.125–1.0-inch cavities in an American Association of Physicists in Medicine (AAPM) CT performance phantom with a sodium chloride solution. Five radiological technologists visually evaluated the noise, signal conspicuity at low-and high-signal density, and the overall image quality using paired comparisons based on Thurstone’s law. In a given acquisition matrix, the total view number had the greatest effect on the image noise, artifacts, and signal detectability on C-arm CT images. For a given incident dose per view on the flat-panel detector (FPD), fewer images with noise and streak artifacts resulted when a larger view number was selected., http://www.jstage.jst.go.jp/article/jjrt/65/6/65_765/_article/-char/ja/}, pages = {765--772}, title = {腹部領域のC-arm CTにおけるスキャンパラメータと画質}, volume = {65}, year = {2009}, yomi = {フナマ, ヨシノリ} }