Faculty Advisor(s)

Gina Capitano



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Surface Guided Radiation Therapy, or SGRT, is a rapidly growing technology designed to improve radiation treatment accuracy of nearly every cancer type without the need for permanent skin tattoos. Patients were typically marked with 3 tattoos, indicating patient setup marks and isocenter marks. SGRT is an external beam radiation therapy technique which uses three-dimensional camera technology to accurately target and kill cancer cells. During patient setup and treatment, the technology uses the patient’s external surface to guarantee that the radiation dose is being consistently applied in accordance with the treatment plan, as well as tracking any patient motion throughout treatment. The real-time positioning tracking acts as a safeguard during radiation treatment, immediately stopping if the patient moves out of exact position. Unlike other forms of radiation therapy, SGRT ensures the patient is receiving radiation therapy with submillimeter accuracy without the need for permanent skin tattoos, as well as shorter treatment times, greater protection of healthy tissues, and higher patient comfort.

Publication Date


Document Type



Medical Imaging


surface guided radiation therapy, cancer, radiation therapy, radiation treatment, external beam therapy, patient tattoos


Medicine and Health Sciences

SGRT Eliminates Need for Patient Tattoos in Radiation Therapy