The examination of between the electrophysiological phenomenonand the dose volume histogram by carbon ion radiation exposure of the heart

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We examined 24 hours electrocardiography to the patients who received carbon ion radiation (CIR) to the mediastinum, and assessed the relation between the electrocardiographic phenomenon and the radiation dose in CIR exposure of the heart. We quantified the exposure of CIRT by using the dose-volume histogram. But there was no correlation between the presence of arrhythmia and the maximum/average dose of CIRT. In this study, one case of primary cardiac malignant tumor was registered. Our CIRT could indicate the safety and the high tumor control for this lethal disease. This result may be useful information for the treatment of this extreme rare disease which lacks of standardized strategies.