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KMID : 0357520170400010057
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Journal of Radiological Science and Technology
2017 Volume.40 No. 1 p.57 ~ p.62
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Dose Comparison Using Deformed Image Registration Method on Breast Cancer Radiotherapy
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Won Yeong-Jin
Kim Jong-Won
Kim Jung-Hoon
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Abstract
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The purpose of this study is to reconstruct the treatment plan by applying CBCT and DIR to dose changes according to the change of the patient's motion and breast shape in the large breast cancer patients and to compare the doses using TWF, FIF and IMRT. CT and CBCT were performed with MIM6 to create DIRCT and each treatment plan was made. The patient underwent computed tomography simulation in both prone and supine position. The homogeneity index (HI), conformity index (CI), coverage index (CVI) to the left breast as planning target volume (PTV) were determined and the doses to the lung, heart, and right breast as organ at risk (OAR) were compared by using dose-volume histogram and the unique property of each organ. The value of HI of the PTV breast increased in all treatment planning methods using DIRCT, and CVI and CI were decreased in the treatment planning methods using DIRCT.
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KEYWORD
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Breast cancer , Deformable image registration , Radiotherapy
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