A new, revolutionary procedure is helping men with prostate cancer reduce radiation therapy side effects by 70 percent. SpaceOAR is a hydrogel that is placed between the prostate and the rectum to push the two organs away from each other during radiation treatment of prostate cancer. The reduction in radiation dose allows more men to live with less side effects from radiation treatment. Dr. R. Alex Hsi, radiation oncologist and co-founder of Peninsula Cancer Center shows how the water-based gel works.