**Study on Proton Spot Placement for Prostate Cancer** This study explores a **new way** of placing proton spots during proton therapy to treat prostate cancer. Proton therapy uses a beam of protons to kill cancer cells. Researchers want to see if a method called *"Spot Delete"* can lower the side effects, like diarrhea and bladder problems, by adjusting where protons stop in the body. Two groups will be compared: one using *"Spot Delete"* to avoid placing protons in certain areas like the rectum, and another using traditional methods. **Key Points:** - The study involves creating a treatment plan using a CT scan. - Participants are randomly assigned to one of two groups. - There might be a reduction in bowel and bladder side effects with *"Spot Delete."* Eligibility: You must be 18+, have prostate cancer, and be able to complete surveys. People who had prior prostate or pelvic treatments, or have certain bowel diseases, cannot join. Participating in this study carries normal proton therapy risks, and although not expected, some side effects might increase. This research could improve how proton therapy is given, making it safer and more effective. **Would you like to join?**