SUZHOU LINATECH MEDICAL SCIENCE AND TECHNOLOGY CO.; LTD.
发明人:
Jonathan Yi YAO
申请号：
US15552571
公开号：
US20180043187A1
申请日:
2016.04.05
申请国别(地区):
US
年份:
2018
代理人:
摘要：
The invention discloses a grating device for radiotherapy equipment. A tail-end position controller and a front-end position controller are simultaneously arranged, and can simultaneously verify a tail-end position and a middle position of each single grating blade and measure the time during which one grating blade arrives at the middle position from the tail-end position and/or the total number of revolutions of a motor at any time. Because the distance between the tail-end position and the middle position is fixed and can be accurately measured, the system can accurately verify the position of one grating blade and control the grating blades to arrive at an accurately specified position； because the grating blades can be conveniently verified and controlled one by one, transmission errors caused by different grating blade driving systems and errors caused by instable performance can be effectively overcome； even verification can be performed before each fitting of a radiation field, and then accurate control can be realized according to the latest measured actual parameters.
