Cardiac endocardial left atrial substrate mapping and lesion depth assessment using near-infrared spectroscopy

Soo Young Park; Haiqiu Yang; Charles C. Marboe; Ohad Ziv; Kenneth Laurita; Andrew M. Rollins; Deepak Saluja; Christine P. Hendon

doi:10.1117/12.2610367

7 March 2022 Cardiac endocardial left atrial substrate mapping and lesion depth assessment using near-infrared spectroscopy

Soo Young Park, Haiqiu Yang, Charles C. Marboe, Ohad Ziv, Kenneth Laurita, Andrew M. Rollins, Deepak Saluja, Christine P. Hendon

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Proceedings Volume PC11936, Diagnostic and Therapeutic Applications of Light in Cardiology 2022; PC1193609 (2022) https://doi.org/10.1117/12.2610367
Event: SPIE BiOS, 2022, San Francisco, California, United States

Abstract

An intraoperative tool that accurately provides detailed structural information and classifies endocardial substrates could help improve guidance during ablation therapy. With our custom near infrared spectroscopy-integrated radiofrequency catheter, here we demonstrate atrial substrate mapping on ex vivo swine and human left atria. Optical contrast indices and classification algorithms were developed, which classified pulmonary vein, lesion, and fibrosis using optically derived parameters based on endogenous tissue spectral signatures with high accuracy. Predicted lesion depth percentage linearly corresponded with ground truth measurements from trichrome histology. These results suggest near infrared-integrated mapping catheters can serve as a complementary tool to currently-available electroanatomical mapping systems to improve treatment efficacy.

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Soo Young Park, Haiqiu Yang, Charles C. Marboe, Ohad Ziv, Kenneth Laurita, Andrew M. Rollins, Deepak Saluja, and Christine P. Hendon "Cardiac endocardial left atrial substrate mapping and lesion depth assessment using near-infrared spectroscopy", Proc. SPIE PC11936, Diagnostic and Therapeutic Applications of Light in Cardiology 2022, PC1193609 (7 March 2022); https://doi.org/10.1117/12.2610367

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KEYWORDS

Near infrared spectroscopy

Associative arrays

Veins

Tissue optics

Diffuse reflectance spectroscopy

Heart

Natural surfaces

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