Effect of Continuous Nutritionist-led Guidance on Bowel Preparation in Patients Undergoing Prostate Stereotactic Body Radiation Treatment With Endorectal Spacing: A Prospective Pilot Trial.

Objective: To evaluate the effect of a daily nutritionist consultation on rectal volume, gas, and prostate displacement during Stereotactic Body Radiation Treatment (SBRT) with an endorectal spacer.

Methods: Twenty-six consecutive patients receiving 5 fraction SBRT with endorectal spacing were prospectively enrolled for an intensive daily nutritionist intervention utilizing biofeedback based on image guidance from each fraction. A retrospective control cohort receiving a standard bowel preparation was compared.