ArticleAnalytical chemistry2025
Self-Calibrated Stimulated Raman Scattering Spectroscopy for Rapid Cholangiocarcinoma Diagnosis.
Article in Analytical chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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9 authors.
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Abstract
Cholangiocarcinoma (CCA) is an aggressive malignancy with poor clinical outcomes. The current "gold standard" diagnostic approach, endoscopic retrograde cholangiopancreatography (ERCP)-obtained biopsy, has a relatively low sensitivity (i.e., ∼50%). Here, we developed a bile-based diagnostic system using transient stimulated Raman scattering (T-SRS). Except for the tolerance to autofluorescence inherited from traditional SRS spectroscopy, T-SRS features quantum-limit spectral line shapes and is further improved with self-calibration ability in this research. These advantages make the acquired Raman spectra insensitive to the drifting of the excitation parameters, facilitating long-term reliability. Based on the T-SRS spectra in the C-H stretching region from 76 bile samples accumulated over more than 1 year, we demonstrated high accuracy (i.e., 85 ± 3%) and sensitivity (i.e., 87 ± 9%) for classification between CCA and benign diseases. The T-SRS acquisition only requires ∼9-μL bile samples and features a drastically improved time cost. This study suggests that the self-calibrated T-SRS analysis of the bile sample offers a promising approach for rapid CCA diagnosis.
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