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arXiv · 2608.02889

Real-time tissue-equivalent measurement of individual clinical radiotherapy pulses

Fernanda C. Rodrigues-Machado·Katherine Szabo·Jingyi Bian·Simon Bernard·Tanner Connell·Shirin A. Enger·Lilian Childress·Jack C. Sankey
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Abstract

We apply the precision tools of cavity-enhanced absorption sensing to clinical oncology, demonstrating a dosimeter paradigm in which a centimeter-scale volume of water serves as a tissue-equivalent sensing medium. Our proof-of-concept, all-optical scheme achieves real-time readout of clinical radiation pulses with a nominal single-pulse resolution of 90 $\mu$Gy. This demonstration paves the way toward fiber-integrated, micron-scale devices for $\textit{in situ}$ universal absolute dosimetry during treatment.

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Fernanda C. Rodrigues-Machado, Katherine Szabo, Jingyi Bian, Simon Bernard, Tanner Connell, Shirin A. Enger, Lilian Childress, Jack C. Sankey. 2026-08-03. Real-time tissue-equivalent measurement of individual clinical radiotherapy pulses. https://arxiv.org/abs/2608.02889

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