An Observational Study of Radiotherapy After Injection of SpaceOAR Hydrogel

This observational study aims to evaluate the safety and effectiveness of radiotherapy for subjects with localized T1-T2 prostate cancer in China who were injected with SpaceOAR Hydrogel, via collecting clinical data related to radiotherapy.

Inclusion Criteria:Subjects have provided the written informed consent, are willing to participate in clinical data collection and willing to comply with study procedure. (for subjects enrolled prospectively)Subjects must have been pathologically confirmed prostate cancer with clinical stage T1-T2, and have been treated with Space OAR Hydrogel, and have received or will receive radiotherapy.Exclusion Criteria:All subjects have received radiotherapy or will receive radiotherapy, who have injected with SpaceOAR hydrogel in Boao Medical Pilot Zone.There is no specific exclusion criteria unless the patients refuse to sign the informed consent.