ArticleBiomedical optics express2024
Optical signatures of thermal damage on ex-vivo brain, lung and heart tissues using time-domain diffuse optical spectroscopy.
Article in Biomedical optics express, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Temperature-induced hemoglobin dynamics: oxygenation-dependent evolution of hemoglobin spectral response in the near-infrared.Biophotonics discovery · 2026Article
- In-vivo optical properties spectra across five body locations on ten subjects using time-domain diffuse optics.Scientific data · 2026Article
- Diffuse Optical Spectroscopy: Technology and Applications: introduction to the feature issue.Biomedical optics express · 2024Article
- Use of bioresorbable fibers for short-wave infrared spectroscopy using time-domain diffuse optics.Biomedical optics express · 2024Article
- Optical signatures of thermal damage on ex-vivo brain, lung and heart tissues using time-domain diffuse optical spectroscopy.Biomedical optics express · 2024Article
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Authors and funding
4 authors.
Funding
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Abstract
Thermal therapies treat tumors by means of heat, greatly reducing pain, post-operation complications, and cost as compared to traditional methods. Yet, effective tools to avoid under- or over-treatment are mostly needed, to guide surgeons in laparoscopic interventions. In this work, we investigated the temperature-dependent optical signatures of ex-vivo calf brain, lung, and heart tissues based on the reduced scattering and absorption coefficients in the near-infrared spectral range (657 to 1107 nm). These spectra were measured by time domain diffuse optics, applying a step-like spatially homogeneous thermal treatment at 43 °C, 60 °C, and 80 °C. We found three main increases in scattering spectra, possibly due to the denaturation of collagen, myosin, and the proteins' secondary structure. After 75 °C, we found the rise of two new peaks at 770 and 830 nm in the absorption spectra due to the formation of a new chromophore, possibly related to hemoglobin or myoglobin. This research marks a significant step forward in controlling thermal therapies with diffuse optical techniques by identifying several key markers of thermal damage. This could enhance the ability to monitor and adjust treatment in real-time, promising improved outcomes in tumor therapy.
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Registered trials
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