Evaluation of an in-house self-held respiration monitoring device for deep inspiration breath hold techniques for radiotherapy of patients with cancer of the left breast

• DOI: 10.1017/s1460396919000517
• Publication Date: 2019-08-09T13:02:41Z
• Authors: Yuen Yan Chan; Ki Man Ku; Yin Ping Ng; Siu Ki Ben Yu; Chi Wah Tony Kong; Wing Lun Alan Mui; Chun Man Cornel Wong; Sze Wan Kong; Sze Ming Wong; George Chiu
• Keywords: 03 medical and health sciences; 0302 clinical medicine; 3. Good health

Abstract Background: An in-house self-held respiration monitoring device (SHRMD) was developed for providing deep inspiration breath hold (DIBH) radiotherapy. The use of SHRMD is evaluated in terms reproducibility, stability and heart dose reduction. Methods materials: Sixteen patients receiving radiotherapy left breast cancer were planned treatment with both a free breathing (FB) scan DIBH scan. Both FB plans generated comparison the heart, anterior descending (LAD) artery lung dose. All received their treatments using SHRMD. Megavoltage cine images acquired during evaluating reproducibility position Results: Compared plans, maximum to by technique reduced 29·9 ± 15·6%; LAD 41·6 18·3%. inter-fractional overall mean error 0·01 cm intra-fractional 0·04 cm. Conclusion: This study demonstrated potential benefits reduce able perform stable reproducible DIBHs.