ESTRO 2024 - Abstract Book

S4001

Physics - Inter-fraction motion management and offline adaptive radiotherapy

ESTRO 2024

In terms of affordability, the hardware cost for each system was well under 5000 US dollars. While the development cost is yet to be determined, significant savings could be facilitated compared to current market offerings for motion monitoring. Furthermore, this system is being designed for scalability to other respiratory motion mitigation applications and beyond (collision prevention, CT-less planning, patient setup).

Conclusion:

We introduced a camera system that meets standards for real-time respiratory monitoring, providing accurate surface tracking for DIBH maneuvers. The system was validated against known motion and clinically used systems. The prototype system is affordable, easily deployable and could bridge the gap in clinics that lack resources to provide this type of cardiac sparing breast radiotherapy. Future work involves developing a 3D-printed modular stand and benchmarking the system on healthy volunteers against the Identify™ system.

Keywords: optical imaging, tracking, surface imaging

References:

1. Arnold, M. et al. Current and future burden of breast cancer: Global statistics for 2020 and 2040. Breast Off. J. Eur. Soc. Mastology 66, 15–23 (2022). 2. Borst, G. R. et al. Clinical results of image-guided deep inspiration breath hold breast irradiation. Int. J. Radiat. Oncol. Biol. Phys. 78, 1345–1351 (2010). 3. Stranzl, H., Zurl, B., Langsenlehner, T. & Kapp, K. S. Wide tangential fields including the internal mammary lymph nodes in patients with left-sided breast cancer. Influence of respiratory-controlled radiotherapy (4D-CT) on cardiac exposure. Strahlenther. Onkol. Organ Dtsch. Rontgengesellschaft Al 185, 155–160 (2009).