Are simple verbal instructions sufficient to ensure that bladder volume does not deteriorate prostate position reproducibility during spot scanning proton therapy?

Nishioka, Kentaro; Gotoh, Kento; Hashimoto, Takayuki; Abe, Takashige; Osawa, Takahiro; Matsumoto, Ryuji; Yokota, Isao; Katoh, Norio; Kinoshita, Rumiko; Yasuda, Koichi; Yakabe, Toshiaki; Yoshimura, Takaaki; Takao, Seishin; Shinohara, Nobuo; Aoyama, Hidefumi; Shimizu, Shinichi; Shirato, Hiroki

Are simple verbal instructions sufficient to ensure that bladder volume does not deteriorate prostate position reproducibility during spot scanning proton therapy?

Nishioka, Kentaro; Gotoh, Kento; Hashimoto, Takayuki et al.

BJR|Open, 2021, 3(1), 20210064

Permalink : https://hdl.handle.net/2115/83300

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アクセス権	open access
URI	https://hdl.handle.net/2115/83300
タイトル	Are simple verbal instructions sufficient to ensure that bladder volume does not deteriorate prostate position reproducibility during spot scanning proton therapy?
著者	Nishioka, Kentaro ; Gotoh, Kento ; Hashimoto, Takayuki ; Abe, Takashige ; Osawa, Takahiro ; Matsumoto, Ryuji ; Yokota, Isao ; Katoh, Norio ; Kinoshita, Rumiko ; Yasuda, Koichi ; Yakabe, Toshiaki ; Yoshimura, Takaaki ; Takao, Seishin ; Shinohara, Nobuo ; Aoyama, Hidefumi ; Shimizu, Shinichi ; Shirato, Hiroki
e-Rad_Researcher 80463743 著者名 Nishioka, Kentaro
著者名 Gotoh, Kento
著者名 Hashimoto, Takayuki
著者名 Abe, Takashige
著者名 Osawa, Takahiro
著者名 Matsumoto, Ryuji
著者名 Yokota, Isao
著者名 Katoh, Norio
著者名 Kinoshita, Rumiko
著者名 Yasuda, Koichi
著者名 Yakabe, Toshiaki
著者名 Yoshimura, Takaaki
著者名 Takao, Seishin
著者名 Shinohara, Nobuo
著者名 Aoyama, Hidefumi
著者名 Shimizu, Shinichi
e-Rad_Researcher 20187537 著者名 Shirato, Hiroki
言語	英語
発行日	2021-11-11
出版者	British Institute of Radiology
収録物名	BJR\|Open
巻(号)	3(1)
ページ	20210064
抄録	Objectives:The purpose of this study is to investigate whether verbal instructions are sufficient for bladder volume (BV) control not to deteriorate prostate position reproducibility in image-guided spot scanning proton therapy (SSPT) for localized prostate cancer.Methods:A total of 268 treatment sessions in 12 consecutive prostate cancer patients who were treated with image-guided SSPT with fiducial markers were retrospectively analyzed. In addition to strict rectal volume control procedures, simple verbal instructions to void urine one hour before the treatment were used here. The BV was measured by a Bladder Scan just before the treatment, and the prostate motion was measured by intraprostatic fiducial markers and two sets of X-ray fluoroscopy images. The correlation between the BV change and prostate motion was assessed by linear mixed-effects models and systematic and random errors according to the reproducibility of the BV.Results:The mean absolute BV change during treatment was from ?98.7 to 86.3 ml (median 7.1 ml). The mean absolute prostate motion of the patients in the left-right direction was ?1.46 to 1.85 mm; in the cranial-caudal direction it was ?6.10 to 3.65 mm, and in the anteroposterior direction ?1.90 to 5.23 mm. There was no significant relationship between the BV change and prostate motion during SSPT. The early and late genitourinary and gastrointestinal toxicity was minimal with a minimum follow up of 4.57 years.Conclusions:Simple verbal instructions about urination was suggested to be sufficient to control the BV not to impact on the prostate motion and clinical outcomes in image-guided SSPT. Careful attention to BV change is still needed when the seminal vesicle is to be treated.Advances in knowledge:Our data demonstrated that there was no apparent relationship between BV changes and prostate position reproducibility and simple verbal instruction about urination could be sufficient for image-guided SSPT
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 4.0 International
EISSN	2513-9878
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1259/bjro.20210064