Role Development for Radiation Therapists: An Examination of the Computed Tomographic Simulation Procedure for Patients Receiving Radiation Therapy for Breast Cancer.

Purpose: This study investigated the role of radiation therapists (RTs) in the computed tomographic (CT) simulation procedure for patients receiving radiation therapy for breast cancer at a large comprehensive cancer clinic. RTs had developed a "hybrid role" whereby they practiced autonomously during a "therapist-led CT simulation." As well as CT scanning, RTs assessed the images, performed isocentre and field placement, and contoured the organs at risk in preparation for dosimetrists to optimize the dose distribution.