| 摘要 |
PROBLEM TO BE SOLVED: To always exactly irradiate a lesion with particle beams only when an eyelid is opened and to provide therapy while reducing the burden on a patient by measuring the action of the eyelid of the patient, eyeball or the both and synchronizing the operating parameter of a charged particle nuclear irradiating device with this action. SOLUTION: An accelerator system 1 generates particle beams required for therapy, an irradiation field forming device 5 adjusts beam form and energy distribution and sets them corresponding to the position and form of the lesion at the eyebottom of a patient 6, and head is fixed by a fixer 7. A monitor camera 8 monitors the action on te eyeball or the opening/closing of the eyelid of the patient 6, sends image information to a glance monitor 9 and outputs image signals to a judging device 1. The judging device 21 compares these signals with information in a storage device 22 and, when they are settled within the allowable range, a signal is sent from the judging device 21 to a beam extraction controller 10 so that the lesion can be irradiated with beams. An irradiation dose rate is monitored by a dose monitor, a synchrotron operation controller 24 accumulates the dose rate and, when the total irradiation dose is achieved, irradiation is finished. |
