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In recent years, radiation oncologists consider the use of “spacing” techniques to reduce the risk of radiation injury to surrounding tissue during radiotherapy. SpaceOAR hydrogel reduces the radiation dose delivered to the anterior rectum. Injected as a liquid into the space between the prostate and rectum, SpaceOAR hydrogel pushes the structures apart and then solidi es into a soft hydrogel, which remains stable for three months during radiation therapy then lique es and is completely absorbed by the body. Our Radiation Oncologist will discuss this option for you if appropriate for your care.