Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.526
Publication date: 16th December 2024
Proton therapy is a cutting-edge cancer treatment that uses high-energy proton beams to target tumors with remarkable precision. Unlike conventional radiation therapy based on high energy photons, proton therapy allows for a more localized deposition of energy, delivering a high dose to the tumor while minimizing damage to surrounding healthy tissues. This precision is especially crucial in treating cancers located near critical organs or in pediatric patients, where sparing healthy tissue is essential to reducing long-term side effects.
The success of proton therapy relies heavily on accurate dose delivery. Even small deviations in the proton beam’s range or energy due to misalignment issues can lead to under-dosing the tumor or over-dosing healthy tissues. Therefore, during proton therapy is even more important the monitoring in real-time of the dose delivered to the patients to ensure treatment safety and effectiveness. In fact, real-time and in-situ dose monitoring systems can detect discrepancies during treatment, enabling immediate corrections and improving patient outcomes.
Organic semiconductors and lead halide perovskites recently demonstrated their potentiality for the detection and spatial mapping of MeV protons1–4. These two classes of materials in the form of thin films fully benefit from solution-based fabrication processes that allow fast and easy large-area coverage over flexible thin plastic substrates with low-cost procedures.
Here, we report about the employment of organic and perovskite thin films as the active layer of proton direct and indirect detectors for the real-time and in-situ monitoring of the dose delivered to the patients during proton therapy treatments.
1. Fratelli, I. et al. Real-Time Radiation Beam Monitoring by Flexible Perovskite Thin Film Arrays. Advanced Science (2024).
2. Fratelli, I. et al. Direct detection of 5-MeV protons by flexible organic thin-film devices. Sci Adv 7, eabf4462 (2021).
3. Basiricò, L. et al. Mixed 3D – 2D Perovskite Flexible Films for the Direct Detection of 5 MeV Protons. Advanced Science 2204815, 1–8 (2022).
4. Calvi, S. et al. Flexible fully organic indirect detector for megaelectronvolts proton beams. npj Flexible Electronics 1–11 (2023).
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