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http://dx.doi.org/10.7742/jksr.2018.12.3.313

A Change in an Absorbed Dose of the Heart in General and Respiratory Control Radiation Treatment Plans  

Yang, Eun-Ju (Department of Clinical Laboratory Science, Daegu Haany University)
Kim, Young-Jae (Department of Radiologic Technology, Daegu Health College)
Publication Information
Journal of the Korean Society of Radiology / v.12, no.3, 2018 , pp. 313-319 More about this Journal
Abstract
In radiation treatment, it is unavoidable to block the influence of scattered ray on a skin and prevent internal normal organs from being exposed to radiation. It is fair to say that radiation therapy aims to reduce an absorbed dose of normal tissues. In particular, in radiation therapy of left-sided breast cancer, the internal neighboring organs are normal breast tissues, the heart, and the lung. The side effects on the heart include cardioplegy and myocardial infarction. This study tried to observe changes in the volume and dose of the heart in general radiation therapy plan and respiratory control based radiation therapy plan for patients with left-sided breast cancer, and to find the heart's volume and dose generated by respiration. According to the 4D computer tomography (CT), a volume of the heart had $12.8{\pm}8.7cc$ on average, and its dose had $17.3{\pm}12.1cGy$ on average. The differences in the volume and dose may cause side effects in radiation treatment. Therefore, it is necessary to apply respiratory control technique to establish the radiation treatment plan based on an accurate position of the heart.
Keywords
radiation therapy; heart dose; breast cancer;
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