Kamst O, Firth D
GenesisCare, Southport, Australia.
Phys Eng Sci Med. 2025 Aug 13. doi: 10.1007/s13246-025-01607-0.
Film quality assurance software is an integral component of patient-specific quality assurance for various radiation techniques where high degrees of geometrical and dosimetric accuracy are required. Evaluating the accuracy of film quality assurance software products has relied on various techniques ranging from comparative analyses, measurements with phantoms and other detectors, along with confidence from industry-standard peer reviews. The aim of this work was to determine if a series of synthetically created film and DICOM images can be used to test the accuracy of certain patient specific quality assurance metrics used in film quality assurance software packages. The synthetic images have been engineered to simulate radiographic film scanned TIFF images and treatment planning system exported DICOM files. Each pair of images were designed to test a particular component of the software's ability to process curve fitting, dosimetric differences, distance to agreement, percentage threshold and gamma analysis. It was found that synthetic film could simulate radiographic scanned films and treatment planning system DICOM planes and provide the physicist with empirical data on the accuracy of the mentioned metrics. The series of tests also assisted the physicist in identifying optimal calibration models, validating geometric and dosimetric variations, and offering insights into potential differences in lower dose penumbras.
胶片质量保证软件是针对各种放射技术进行患者特定质量保证的一个不可或缺的组成部分，这些放射技术需要高度的几何和剂量准确性。评估胶片质量保证软件产品的准确性依赖于多种技术，包括比较分析、使用模体和其他探测器进行测量，以及来自行业标准同行评审的可信度。这项工作的目的是确定一系列合成生成的胶片和DICOM图像是否可用于测试胶片质量保证软件包中某些患者特定质量保证指标的准确性。合成图像经过设计，以模拟射线照相胶片扫描的TIFF图像和治疗计划系统导出的DICOM文件。每对图像旨在测试软件处理曲线拟合、剂量差异、一致性距离、百分比阈值和伽马分析能力的特定组件。结果发现，合成胶片可以模拟射线照相扫描胶片和治疗计划系统DICOM平面，并为物理学家提供有关上述指标准确性的经验数据。这一系列测试还帮助物理学家确定最佳校准模型，验证几何和剂量变化，并深入了解较低剂量半值层中的潜在差异。
