Evaluation of cardiac and lung irradiation in left-side breast irradiation with deep inspiration breath hold technique
Keywords:
maximum heart distance (MHD), central lung distance (CLD), deep inspiration breath hold (DIBH), breast cancerAbstract
Background: Breathing is the major cause of uncertainty in heart and lung dose for left breast irradiation.
Objective: The aim of this study is to evaluate cardiac and lung irradiation in left sided breast cancer patients who received radiation with deep inspiration breath-hold technique and free breath technique by measuring the maximum heart distance (MHD) and the central lung distance (CLD).
Materials and Methods: The 23 patients with left sided breast irradiation were included in this study. There were two groups, free breath for 8 patients and deep inspiration breath-hold (DIBH) for 15 patients. Two opposing fields of the tangent beam were planned. Two radiation technologists measured the MHD and CLD from digitally reconstructed radiograph (DRR) and electronic portal imaging device (EPID) about 5-7 times along the course of treatment.
Results: Two independent MHD and CLD measurements were not significantly different (p-value < 0.05). The MHD and CLD for the DIBH and the free breath technique were not significantly difference. There are no different of MHD and CLD between the simulation and the course of treatment.
Conclusion: No significant difference of MHD and CLD was found between DIBH versus free breath technique and between the simulation versus the course of treatment.
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บทความที่ได้รับการตีพิมพ์เป็นลิขสิทธิ์ของวารสารมะเร็งวิวัฒน์ ข้อความที่ปรากฏในบทความแต่ละเรื่องในวารสารวิชาการเล่มนี้เป็นความคิดเห็นส่วนตัวของผู้เขียนแต่ละท่านไม่เกี่ยวข้องกับ และบุคคลากรท่านอื่น ๆ ใน สมาคมฯ แต่อย่างใด ความรับผิดชอบองค์ประกอบทั้งหมดของบทความแต่ละเรื่องเป็นของผู้เขียนแต่ละท่าน หากมีความผิดพลาดใดๆ ผู้เขียนแต่ละท่านจะรับผิดชอบบทความของตนเองแต่ผู้เดียว
