公开(公告)号：US20080144770A1

公开(公告)日：2008-06-19

申请号：US11792196

申请日：2005-12-06

申请人： Suk Lee ,  Chul Yong Kim ,  Dae Sik Yang ,  Myung Sun Choi

发明人： Suk Lee ,  Chul Yong Kim ,  Dae Sik Yang ,  Myung Sun Choi

IPC分类号： A61N5/10

CPC分类号： A61N5/1049 ,  A61N5/107 ,  A61N2005/1058

摘要： A radiotherapy system capable of compensating for displacement according to the breathing of a patient, and a method for controlling the same are disclosed. The method includes the steps of: a) irradiating an affected part of the patient who lies on a moving phantom which compensates for displacement of the irradiated part according to breathing of the patient; b) measuring a distance from the irradiated part of the patient to each of ultrasonic sensors using ultrasound; c) extracting displacement of the irradiated part of the patient on the basis of the measured distance; d) generating displacement-compensation information for compensating for the extracted displacement of the irradiated part; and e) moving the moving phantom on the basis of the displacement-compensation information, and compensating for the displacement of the irradiated part. The radiotherapy system acquires the displacement according to the breathing of a patient using an ultrasonic sensor, and adjusts the location of a moving phantom (i.e., a patient bed) using an inverse value of the acquired displacement, such that it recognizes displacement caused by the natural breathing of the patient, reduces a target volume, and ensures patient safety.

摘要翻译： 公开了能够根据患者的呼吸补偿位移的放射治疗系统及其控制方法。 该方法包括以下步骤：a）照射位于移动体模上的患者的受影响部分，该移动体模根据患者的呼吸补偿照射部位的位移; b）使用超声波测量从被照射部分到每个超声波传感器的距离; c）基于测量的距离提取患者的被照射部分的位移; d）产生用于补偿被照射部分的提取位移的位移补偿信息; 以及e）基于所述位移补偿信息移动所述移动体模，以及补偿被照射部分的位移。 放射治疗系统根据使用超声波传感器的患者的呼吸获取位移，并且使用所获取的位移的逆值来调整移动体模（即患者床）的位置，使得其识别由 患者的自然呼吸，降低目标体积，并确保患者的安全。