Development of high-precision image-guided irradiation method that enables us to monitor the movement during linac stereotactic radiosurgery

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Stereotactic radiotherapy is a burden for the patients, when the frame is attached to the skull with a bolt to suppress the patient’s movement. We developed a device to obtain the head position and treat safely by using an optical device without losing the precision. After having verified the precision and safety on the basic experiment, the experiment was performed by the volunteers. As a result, we confirmed it practicable enough and had an expectation to the extensive application.