医用电子直线加速器多叶光栅到位补偿方法及系统

• Format: Patent
• Language: Chinese
• Published: 22.03.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; ELECTROTHERAPY; HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATIONTECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING ORPROCESSING OF MEDICAL OR HEALTHCARE DATA; HUMAN NECESSITIES; HYGIENE; INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS; MAGNETOTHERAPY; MEDICAL OR VETERINARY SCIENCE; PHYSICS; RADIATION THERAPY; ULTRASOUND THERAPY

本发明公开一种医用电子直线加速器多叶光栅到位补偿方法，其包括步骤：获取光栅移动到目标位置的索引变量值、目标位置值；根据索引变量值查询预存的位置补偿表，获取对应的第一补偿值；将第一补偿值补充到目标位置值上，驱动光栅移动到目标位置；其中，索引变量包括目标位置、机架实时角度、机头实时角度以及光栅种类，目标位置值、第一补偿值是控制光栅移动的电机电流值。本发明通过包括光栅重量的光栅索引变量进行查表获得位置补偿值以对不同位置的光栅进行到位补偿，减小不同机架角度、不同小机头角度时的不同种类叶片受重力及叶片间机械摩擦影响产生的到位偏差，实现多叶光栅到位更加精确、准确。 The invention discloses an in-place compensation method for a multi-leaf collimator of a medical electron linear accelerator. The in-place compensation method comprises the following steps: acquiringan index variable value and a target position value of the collimator moving to a target position; querying a pre-stored position compensation table according to the index variable value to obtain a corresponding first compensation value; supplementing the first compensation value to the target position value, and driving the grating to move to the target position; wherein the index variable comprises a target position, a rack real-time angle, a machine head real-time angle, a grating type and a target position value, and the first compens