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首页> 外文会议>World congress on medical physics and biomedical engineering;International congress of the IUPESM >Radiation Effects Quantification in Breast Radiotherapy by Mammography Image Processing
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Radiation Effects Quantification in Breast Radiotherapy by Mammography Image Processing

机译：乳腺X线摄影图像处理技术在乳腺放射治疗中的放射效应量化

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摘要

We have attempted to quantify the radiation effects on the breast as a result of the radiotherapy application in breast cancer by the aid of the image processing software IDL 6.1. of Research Systems Inc. We used the 2 years follow up mammography series of 12 patients treated in our radiotherapy department after lumpectomy. By processing the mammographic images data, we have introduced the Index, I, defined as the ratio of the Initial Mean Pixel Value (MPV,) and the Mean Pixel Value at the time of interest (MPV_T) of the breast as Region of Interest. The values of the index show the post-irradiation conditions of the breast. Until breast reaches its initial condition (as it was just before the radiotherapy), index is less than 1. In the total period of our study there are two discrete situations: At the first period, after radiotherapy completeness where edema is recognized; and the second time period, where we demonstrate or not fibrosis in the delayed processed images. These results are compared to the medical data of each patient. We develop a simplified method for breast radiation effects detection as a support to patients' follow up, in order to define the final permanent tissue configuration of their breast.
机译：我们已经尝试通过图像处理软件IDL 6.1来量化由于放疗在乳腺癌中对乳腺癌的放射效应。我们对乳房切除术后放疗科接受治疗的12例患者进行了为期2年的随访乳房X线检查。通过处理乳房X线照片图像数据，我们引入了索引I，该索引I被定义为感兴趣区域的初始平均像素值（MPV）与乳房感兴趣时的平均像素值（MPV_T）之比。该指数的值示出了乳房的辐照后状况。直到乳房达到其初始状态（就像放疗之前一样）之前，该指数都小于1。在我们的研究总阶段中，有两种离散的情况：在第一阶段，放疗完成后即出现水肿。第二个时间段，我们在延迟处理后的图像中显示或不显示纤维化。将这些结果与每个患者的医学数据进行比较。为了确定患者乳房的最终永久组织结构，我们开发了一种简化的方法来检测乳房的辐射效应，以支持患者的随访。

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