SUZHOU LINATECH MEDICAL SCIENCE AND TECHNOLOGY CO., LTD.
发明人:
YAO, Jonathan Yi
申请号：
WO2016CN78419
公开号：
WO2016161923(A1)
申请日:
2016.04.05
申请国别(地区):
世界知识产权组织国际局
年份:
2016
代理人:
摘要：
A collimator (10) for a radiation therapy equipment. By disposing both a rear end position controller (5) and a front end position controller (6), a rear end position and a middle position of a single collimator leaf (1) can be calibrated simultaneously, and time and/or a motor revolution number for reaching the middle position from the rear end position of a certain collimator leaf (1) can be measured at any time. Since the distance between the rear end position and the middle position is constant and can be accurately measured, the certain collimator leaf (1) can be precisely calibrated and controlled to reach a precisely specified position. Since one-by-one calibration and control of the collimator leaves (1) can be conveniently achieved, transmission errors caused by a driving system of the different collimator leaves (1) and by unstable performance can be effectively overcome. Furthermore, a calibration can be performed before each time of field fitting, and then precise control can be achieved according
