Feasibility of low-radiation-dose CT for abdominal examinations with hybrid iterative reconstruction algorithm: Low-contrast phantom study

Masatoshi Kondo, Masamitsu Hatakenaka, Ko Higuchi, Taisuke Fujioka, Takashi Shirasaka, Yasuhiko Nakamura, Katsumasa Nakamura, Takashi Yoshiura, Hiroshi Honda

    研究成果: Contribution to journalArticle査読

    5 被引用数 (Scopus)

    抄録

    Our purpose in this study was to evaluate the image quality of low-radiation-dose CT using hybrid iterative reconstruction (HIR), and to compare the results with those of filtered back projection (FBP) at routine doses. We measured the mean values and standard deviation of the CT numbers within and outside a 15-mm low-contrast object cylinder at 1.0 % contrast level. The noise reduction levels of the HIR were 1 (weak) to 7 (strong). Visual inspection of the low-contrast detectability was done by six radiologic technologists. The low-contrast detectability of the cylinder at the 1.0 % contrast level with HIR at all mAs levels was equal to that obtained with FBP, and thus the use of HIR did not result in any improvement of low-contrast detectability.

    本文言語英語
    ページ(範囲)287-292
    ページ数6
    ジャーナルRadiological physics and technology
    6
    2
    DOI
    出版ステータス出版済み - 7 2013

    All Science Journal Classification (ASJC) codes

    • 放射線
    • 理学療法、スポーツ療法とリハビリテーション
    • 放射線学、核医学およびイメージング

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