Low Dose Hemi-body Radiation For Recurrent Prostate Cancer

Inclusion Criteria: * A confirmed diagnosis of prostate cancer. * Having undergone prior prostate surgery or radiotherapy or both. * Evidence of recurrence of the disease as demonstrated by rising PSA levels. Patients are eligible if on androgen blockade or hormone naïve. Exclusion Criteria: * Prior treatment with chemotherapy and/or abiraterone and/or enzalutamide and/or radium-223. * Receiving treatment with immunosuppressive medications. * Platelet count below 50,000/µl (50 x 109/l) or leukocyte count below 3,000/µl (3 x 109/l) or granulocyte count below 2,000/µl (2 x 109/l). * Other medical conditions or co-morbidities which, in the opinion of the Investigator, may interfere with the participant's ability to participate in the study. * Language difficulties which may hinder the patient's ability to complete the trial. * Inability of the potential participant to provide consent. * Lack of independence in daily living activities and any other conditions which, in the opinion of the Investigator, will hinder the participant's ability to participate and complete the study obligations.