Patient-positioning system for radiotherapy

A patient-positioning system for radiotherapy, comprising a processing device and a storage device, wherein the processing device loads a program from the storage device to execute:

• a control module, obtaining treatment planning data, wherein the treatment planning data includes a tilt angle, a rotation angle, a target displacement, and an original target point cloud of an irradiation target;
• a positioning room module, calculating a first support displacement of a fulcrum through image registration based on the tilt angle, the rotation angle, the target displacement, the original target point cloud, and a reference displacement, wherein the first support displacement is a displacement of the fulcrum relative to a beam exit when arrangement of a treatment room table conforms to the treatment planning data, and wherein the treatment room table and a mechanical device are connected at the fulcrum;
• and
• a treatment room module, driving the mechanical device to move the treatment room table such that the fulcrum is at the first support displacement relative to the beam exit;
• wherein when the arrangement of the treatment room table conforms to the treatment planning data, the treatment room table is tilted at the tilt angle and rotated at the rotation angle, and the irradiation target on the treatment room table is at the target displacement relative to the beam exit.