Evaluation of Setup When Using C-Rad System in Radiotherapy

In radiotherapy, accurate patient positioning and set up are important factor that treatment can influence success. In generally, the 3-laser system is used when the patient set up. But today the body surface scanning system(C-Rad system) is trying to use. Compare and evaluate the C-Rad system and the 3-laser system to check availability. Head and neck that are no movement of internal organs and easy to apply fixation device are limited. Alderson Rando anthropomorphic phantom and 10 patients who have lesions of head and neck are targeted. C-RAD system`s setup error mean and standard deviation are the X axis(), Y axis(), Z axis() in the phantom study, and in the patient study X axis(), Y axis() Z axis(). So C-RAD system is better than 3-laser system mostly, but C-RAD system`s error rate is a little worse than 3-laser system in the Z axis. When radiation treatment of head and neck, body surface contour scanning system contribute to correct positioning and minimize the set up error.

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