“…As a non-contact and in situ technique, PIT has many unique advantages that can provide different and complementary microstructural and optical information of a sample compared to an intensity-based imaging method ( Alali and Vitkin, 2015 ; Chandel et al, 2016 ; Dong et al, 2016 ; He et al, 2017 ), the PIT backscatter method and the following analysis can distinguish cancer tissue from healthy tissue ( Menzel et al, 2019 ; Schucht et al, 2020 ; Rodríguez-Núñez and Novikova, 2022 ), and there is an emerging interest in the applications of PIT for biomedical tissues, where the polarized light typically suffers multiple scatterings before being eventually detected ( Alali and Vitkin, 2015 ; He et al, 2017 ). Since the Mueller matrix provides a characterization of the polarization properties and contains abundant microstructural and optical information of the sample ( Pezzaniti and Chipman, 1995 ; Chung et al, 2002 ), PIT is becoming increasingly attractive for differentiating pathological structural features of different tumor types ( Du et al, 2014 ; Wang et al, 2014 ; Menzel et al, 2019 ; Schucht et al, 2020 ; Rodríguez-Núñez and Novikova, 2022 ). It is based on the analysis of the modification of the polarization state of incident polarized light due to the interaction with the sample to be examined, which can be described by the Mueller matrix.…”