CONFERENCE
Programme Osmoze projects ‘PHAETHON - PHoton time-of-flight meAsurEments in brain tissues for medical diagnosis: THe experimens and mOdeliNg’ and ‘Multimodal spectral imaging and machine learning methods for bio-optical characterization of in vivo human skin’ from 8 to 10 July 2025, the following guests visited the Biophotonics Laboratory of the Institute of Atomic Physics and Spectroscopy, Faculty of Sciences and Technology, University of Latvia.
• PostDocs Theotim Lucas and Sooyong Chae from École Polytechnique, France with a presentation entitled ‘Near Real-Time Imaging Mueller Polarimetry Instrument for Neurosurgery’. They presented on the application of Muller spectroscopy in clinical practice during neurosurgical operations. During the visit, we discussed light scattering modulation in comparison with measurement data from the internal part of the brain (corpus callosum) obtained at Biophotonics Laboratory in Atomic Physics and Spectroscopy. The guests were introduced to the photon flight time device and the measurement process, as well as internal data processing; future plans for data processing and analysis were discussed.
• Research engineer Marine Amouroux and Professor Walter Blondel from the University of Lorraine, Faculty of Medicine, Obstetrics and Health Professions, Department of Oncology and Neuroscience Biology, Signals and Systems, Nancy, France. Currently, ‘Osmoze’ projects are investigating how the presence of different lipid concentrations in tissues affect the determination of skin oxygen saturation using diffuse reflection spectroscopy in a clinical setting. During the visit, blood phantom data obtained with the diffuse reflection imaging device developed by the Biophotonics Laboratory was jointly analysed, and future measurements to study the effects of other substances present in tissues were discussed.
Visitors discussed the current research topics of the Biophotonics Laboratory, as well as future cooperation opportunities, and enjoyed Latvian summer delicacies.
