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Application of 2D Ion Chamber Array in Quality Assuranceof Radiation Therapy(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2015年03期
Page:
18-
Research Field:
电气与电子工程
Publishing date:

Info

Title:
Application of 2D Ion Chamber Array in Quality Assuranceof Radiation Therapy
Author(s):
Dou Yiping1; Xin Zhang2; Eun Young Han2; Yulong Yan3
（1.School of Electrical and Automation Engineering，Nanjing Normal University，Nanjing 210042，China）
（2.Department of Radiation Oncology，University of Arkansas for Medical Sciences，Little Rock，AR 72205，USA）
（3.Department of Radiation Oncology，University of Texas Southwestern Medical Center，Dallas，TX 75235，USA）
Keywords:
2D ion chamber array; quality assurance（QA）; dose map measurement; PTW Seven29
PACS:
TH774；R815
DOI:
-
Abstract:
The Quality Assurance（QA）in the treatment of malignant diseases is highly required in the processes of periodical machine performance evaluation and patient-specific dose distribution verification for the safe and accurate radiation therapy. This study aims to evaluate the performance of the PTW ion chamber array Seven29 in routine QA procedures. The method for the study is to use Seven29 with the dedicated Octavius phantom and slab phantom in the dose distribution measurement for the verification of the dose map computation on the treatment planning systems. PTW software VeriSoft and MultiCheck are used for the analysis. Beam profile consistency check，one of the most important items for LINAC monthly QA，can be directly evaluated between two consecutive months. Ion chamber array has proven to be an accurate，reliable and efficient physics gadget for various dosimetry verification procedures. It is one of the essential components of a paperless and filmless radiation therapy facility.

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Last Update: 2015-09-20