Patent Document ID: 9873003
Application ID: 14400802
Patent Status: 1

Claim One:
1. An X-ray positioning apparatus that controls a patient platform by use of an X-ray image so as to position a diseased site of a patient at a radiation irradiation position planned in a treatment plan, the X-ray positioning apparatus comprising: an X-ray video device including (i) a receiving device for receiving first X-ray image data, from an X-ray detector that detects an X-ray radiated by an X-ray tube, and (ii) a built-in memory for storing the received first X-ray image data, said X-ray video device being configured to generate second X-ray image data in which a respiratory signal related to respiration of the patient and the first X-ray image data are related to each other; a positioning computer that compares a diseased site in the second X-ray image data with a diseased site in a reference image, which is a positioning reference, calculates a postural correction amount in such a way that an actual posture coincides with a posture in the treatment plan, and then generates patient platform control data for controlling the patient platform; and a signal generator that communicates with the X-ray tube and generates a trigger signal for radiating X-rays in accordance with two or more frame rates based on (i) the respiratory signal and (ii) a frame rate control signal including photographing conditions for consecutively photographed images in the first X-ray image data, wherein the signal generator generates the trigger signal, in accordance with a first frame rate and a second frame rate that is higher than the first frame rate, and wherein the positioning computer generates the patient platform control data, based on the reference image and one X-ray image selected from consecutively photographed images, in the second X-ray image data, that are photographed at the second frame rate.