CSO Exam- Radiation – QUESTIONS AND ANSWERS

external beam radiation therapy (EBRT) correct answer: uses ionizing radiation from a machine to a specific site in the body Brachytherapy (internal radiation) correct answer: -radiation implant placed into a body -allows higher dose of radiation -safer for surrounding tissue Radiopharmaceutical Therapy correct answer: uses unsealed sources of radiation to treat cancer systemically 3D-CRT correct answer: uses specialized CT scanning and planning system to deliver a prescribed dose of radiation to a precise 3-D target area Intensity Modulated Radiation Therapy (IMRT) correct answer: high-dosage radiation delivered via a beam that changes its dosage and shape; goal is to reduce radiation exposure to normal tissue while delivering more radiation to cancer cells Image Guided Radiation Therapy (IGRT) correct answer: used in tissues that move, such as the heart; uses repeated imaging scans to increase accuracy of therapy to specific targeted tissue stereotactic radiosurgery/radiation (SRS, SRT) correct answer: non-invasive therapy that uses image-guided and precise patient positioning and immobilization to deliver tumor-targeted treatments Total body irradiation (TBI) correct ans