Evaluation of registration accuracy using short-arc cone-beam computed tomography for image-guided radiotherapy in breast cancer.

Shuhei Wada^1,2, Masahide Tominaga³, Motoharu Sasaki³, Koichi Yamanashi⁴, Yoshio Iwai⁵, Shunsuke Furutani⁶, Yusei Shinohara⁷, Yoshihiro Uto⁷

¹Graduate School of Advanced Science and Technology, Tokushima University, Tokushima, Tokushima, Japan.

²Division of Radiology, Kansai Medical University Hospital, Hirakata, Osaka, Japan.

³Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Tokushima, Japan.

⁴Canon Medical Systems Corporation, Otawara, Tochigi, Japan.

⁵Research Physics, Minato-ku, Tokyo, Japan.

⁶Department of Radiology, Tokushima Municipal Hospital, Tokushima, Tokushima, Japan.

⁷Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima, Tokushima, Japan.

PubMed DOI

Abstract

BACKGROUND: Image-guided radiotherapy (IGRT) using cone-beam computed tomography (CBCT) enables highly accurate imaging registration; however, increased radiation exposure remains a concern. Recently, short-arc CBCT (SA-CBCT), which reduces projection data and reconstructs images, has become available. Although previous studies have shown that image quality deteriorates when projection data are re…

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