In real‐time electronic portal imaging device (EPID) dosimetry applications where on‐treatment measured transmission images are compared to an ideal predicted image, ideally a tight tolerance should be set on the quantitative image comparison in order to detect a wide variety of possible delivery errors. However, this is currently not possible due to the appearance of banding artifacts in individual frames of the measured EPID image sequences. The purpose of this work was to investigate simulating banding artifacts in our cine‐EPID predicted image sequences to improve matching of individual image frames to the acquired image sequence. Increased sensitivity of this method to potential treatment delivery errors would represent an improvement in patient safety and treatment accuracy.

中文翻译：

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对电子门禁成像设备（EPID）的读数的时空性质进行建模。

在实时电子门禁成像设备（EPID）剂量测定应用中，将在治疗中测得的透射图像与理想的预测图像进行比较，理想情况下，应在定量图像比较中设置严格的公差，以检测各种可能的传递错误。然而，由于在所测量的EPID图像序列的各个帧中出现带状伪像，当前这是不可能的。这项工作的目的是研究在我们的电影EPID预测图像序列中模拟条带伪像，以改善单个图像帧与所获取图像序列的匹配。这种方法对潜在治疗交付错误的敏感性提高，将代表患者安全性和治疗准确性的提高。