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

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)287-292
    Number of pages6
    JournalRadiological physics and technology
    Volume6
    Issue number2
    DOIs
    Publication statusPublished - Jul 1 2013

    All Science Journal Classification (ASJC) codes

    • Radiation
    • Physical Therapy, Sports Therapy and Rehabilitation
    • Radiology Nuclear Medicine and imaging

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  • Cite this

    Kondo, M., Hatakenaka, M., Higuchi, K., Fujioka, T., Shirasaka, T., Nakamura, Y., Nakamura, K., Yoshiura, T., & Honda, H. (2013). Feasibility of low-radiation-dose CT for abdominal examinations with hybrid iterative reconstruction algorithm: Low-contrast phantom study. Radiological physics and technology, 6(2), 287-292. https://doi.org/10.1007/s12194-012-0197-7