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Towards an interpretable classifier for characterization of endoscopic Mayo scores in ulcerative colitis using Raman Spectroscopy

Title data

Kirchberger-Tolstik, Tatiana ; Pradhan, Pranita ; Vieth, Michael ; Grunert, Philip ; Popp, Jürgen ; Bocklitz, Thomas ; Stallmach, Andreas:
Towards an interpretable classifier for characterization of endoscopic Mayo scores in ulcerative colitis using Raman Spectroscopy.
In: Analytical Chemistry. Vol. 92 (2020) Issue 20 . - pp. 13776-13784.
ISSN 1520-6882
DOI: https://doi.org/10.1021/acs.analchem.0c02163

Abstract in another language

Ulcerative colitis (UC) is one of the main types of chronic inflammatory diseases that affect the bowel, but its pathogenesis is yet to be completely defined. Assessing the disease activity of UC is vital for developing a personalized treatment. Conventionally, the assessment of UC is performed by colonoscopy and histopathology. However, conventional methods fail to retain biomolecular information associated to the severity of UC and are solely based on morphological characteristics of the inflamed colon. Furthermore, assessing endoscopic disease severity is limited by the requirement for experienced human reviewers. Therefore, this work presents a nondestructive biospectroscopic technique, for example, Raman spectroscopy, for assessing endoscopic disease severity according to the four-level Mayo subscore. This contribution utilizes multidimensional Raman spectroscopic data to generate a predictive model for identifying colonic inflammation. The predictive modeling of the Raman spectroscopic data is performed using a one-dimensional deep convolutional neural network (1D-CNN). The classification results of 1D-CNN achieved a mean sensitivity of 78% and a mean specificity of 93% for the four Mayo endoscopic scores. Furthermore, the results of the 1D-CNN are interpreted by a first-order Taylor expansion, which extracts the Raman bands important for classification. Additionally, a regression model of the 1D-CNN model is constructed to study the extent of misclassification and border-line patients. The overall results of Raman spectroscopy with 1D-CNN as a classification and regression model show a good performance, and such a method can serve as a complementary method for UC analysis.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Computer Science > Lehrstuhl Künstliche Intelligenz in der Mikroskopie und Spektroskopie > Lehrstuhl Künstliche Intelligenz in der Mikroskopie und Spektroskopie - Univ.-Prof. Dr. Thomas Wilhelm Bocklitz
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 16 May 2023 12:13
Last Modified: 16 May 2023 12:13
URI: https://eref.uni-bayreuth.de/id/eprint/76333