The Preliminary Study of Two Dimensional Ionization Chamber Array and Electronic Portal Imaging Device(EPID) System in Dosimetric Verification 二维电离室矩阵与电子射野影像系统在剂量验证中的初步研究灭火剂总用量灭火剂的设计用量
The Study of Patient Dose Verification Using the Electronic Portal Imaging Device(EPID) 电子射野影像装置在患者剂量验证方面的研究
Electronic portal imaging device ( EPID ) is now been used widely. 电子射野影像系统(EPID)越来越多的被应用。
Objective To study the dose response characteristics and the influence factors such as gantry angle, field size and acquisition mode on the dosimetric response curves, when using a scanning liquid ion chamber electronic portal imaging device ( EPID ) for dose verification. 目的研究扫描液体电离室型电子射野影像装置(EPID)的剂量响应特性及其各种影响因素,如机架角、照射野大小、图像获取模式,以便进一步利用EPID进行剂量验证方面的研究。
Purpose Firstly, to investigate the dose response characteristics and its influenced factors of a scanning liquid ion-chambe electronic portal imaging device ( EPID ). 目的首先,研究扫描液体电离室型电子射野影像系统(EPID)的剂量响应特性及其各种影响因素。