UFPTI 2403-PR12: Real-Time Volumetric Ionizing Radiation Acoustic Imaging for In-vivo Proton Treatment Monitoring in Pencil-Beam Scanning

This study is testing an imaging technology called ionizing Radiation Acoustic Imaging (iRAI), which uses ultrasound to track where proton radiation beams are being delivered in real time during prostate cancer treatment. The goal is to improve treatment accuracy. **You may be eligible if...** - You have prostate cancer being treated with proton radiation therapy - Your cancer is limited to the prostate (no lymph node involvement) - You weigh less than 350 lbs - Your tumor is within a certain size range that fits the ultrasound device **You may NOT be eligible if...** - Your cancer has spread to lymph nodes or other areas - Your body size or tumor characteristics fall outside the device's operational limits Talk to your doctor to see if this trial is right for you.