A radiotherapy system for treating abnormal proteins in the brain, according to the present invention, comprises: a radiation unit, which emits ionizing radiation at a patient's brain so as to reduce brain proteins, thereby restoring the function of microglia cells; and a control unit for controlling the total amount and frequency of radiation emitted from the radiation unit, wherein the control unit performs control so that the total amount of radiation in the range of preset low-dose and/or ultra-low-dose radiation is divided in a plurality of times and emitted to the brain. According to this, brain protein therapy can improve a cognitive function.
RADIOTHERAPY SYSTEM FOR TREATING ABNORMAL BRAIN PROTEINS, AND TREATMENT METHOD THEREFOR