MASK FIXING APPARATUS, MASK COMPONENT AND RADIOTHERAPY DEVICE

摘要

A mask fixing apparatus, a mask component and a radiotherapy device are provided. The mask fixing apparatus includes: a frame, being configured to fix a mask, the frame being U-shaped having an inner boundary line and an outer boundary line, an opening of the frame fitting a neck of a patient, the inner boundary line of the frame being determined based on a periphery of a head of the patient, and the outer boundary line of the frame being determined based on a treatment cavity or an anti-collision cover in the treatment cavity; and a back-head support, being configured to support a back-head of the patient, and being connected with the frame to jointly carry the head of the patient, the inner surface of the back-head support fitting the back-head of the patient, and the outer surface of the back-head support being a curved surface having a preset curvature.