Abstract # 2274 Confirmation Of Proton Beam By Positron Emission Tomography (PET) Apparatus In Patients With Prostate Cancer

Presenter: Shimizu, Masakazu

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Proton therapy is promising and sophisticated treatment modalities against prostate cancer and other malignancies. The proton-irradiated area can be confirmed by coincidence detection of pair annihilation gamma rays from positron emitting isotopes generated by nuclear reaction of irradiated proton nuclei and nuclei in the irradiation target, called autoactivation. In Hyogo Ion Beam Medical Center, the confirmation of the proton-irradiated area using a clinical PET apparatus has been performed in all patients treated with proton therapy, and several noteworthy findings are detected. Thus, the purposes of this study are to investigate which positron emitting isotopes are detected in our clinical settings, and to evaluate whether anatomical or physiological factors affected or not in patients with prostate cancer treated with proton therapy.