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Clinical detection of premalignant lesions often requires labeling with molecular probes. In the gastrointestinal tract, most cancers originate in epithelial layers which are interrogated using topically-applied probes with conjugated fluorescence dyes. As part of clinical trials using fluorescence peptide probes, we have developed two different instruments that rapidly image the biopsy at the bedside before fixation. These multimodal images (visible light reflectance and near infrared fluorescence) provide verification that the targeted lesion was sampled, and provide feedback to the clinician at the bedside for any follow-up procedure. Performance of these two prototypes are compared for fluorescence sensitivity and multimodal image quality.
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Mark E. Fauver, Yang Jiang, Matthew D. Carson, Sean X. Gui, Eric J. Seibel, "Design and testing of fluorescence-guided endoscopic biopsy assessment at the bedside," Proc. SPIE 11633, Design and Quality for Biomedical Technologies XIV, 116330H (5 March 2021); https://doi.org/10.1117/12.2579374