Abstract
To describe an innovative sentinel lymph node (SLN) guidance approach using a radionuclide tracer, 3D augmented reality-guided imaging, and near infrared (NIR) fluorescence over-lay imaging with hand-held probes to optimize accuracy, efficiency, and precise navigation for sentinel node (SN) localization in head and neck cancer. In a cT1N0M0 squamous cell carcinoma of the tongue, pre-operative radionuclide lymphoscintigraphy was performed with a sentinel node-specific radiolabeled tracer. Intraoperatively, a 3D hand-held augmented reality (AR) scanning SPECT probe assessed concordance of the SN with pre-operative SPECT-CT images. The real-time optical video was linked to the SPECT-CT images for added precision. Final guidance to the SN was performed using ICG fluorescence imaging. Dynamic and SPECT-CT showed bilateral lymphatic drainage from the tumor. The 3D hand-held AR SPECT probe SN localization was concordant with pre-operative imaging. The optical video successfully demonstrated the lymphatic drainage in real-time through a unique overlay fluorescence image. The ICG localized to the same nodes identified by both the SPECT-CT and hand-held SPECT images. The use of dual radiation and fluorescence tracers improved SN detection, especially for SN close to the injection site. The hand-held probes allowed the surgeon to dissect continuously, without needing to change tools. The combination of augmented reality, nuclear medicine, and over-lay fluorescence imaging allowed greater accuracy for matching the preoperative imaging with intraoperative identification and precisely guiding the dissection. This method uniquely permitted the surgeon to efficiently dissect the SN with accurate visualization and optimal precision.
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M. C made substantial contributions to conception and design, acquisition of data, was involved in drafting the manuscript and revising it critically for important intellectual content, gave final approval of the version to be published, and agreed to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved. D. S. K. made substantial contributions to conception and design, acquisition of data, was involved in drafting the manuscript and revising it critically for important intellectual content, and gave final approval of the version to be published. L. D. made substantial contributions to conception and design, acquisition of data, was involved in drafting the manuscript and revising it critically for important intellectual content, and gave final approval of the version to be published. M. M. made substantial contributions to conception and design, acquisition of data, was involved in drafting the manuscript and revising it critically for important intellectual content, gave final approval of the version to be published, and agreed to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
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Mr. Chand is a consultant for Novadaq Technologies outside of the scope of this work. Mr. Chand has received speaker and teaching honorarium from Novadaq Technologies unrelated to this work. Dr, Keller declares that she has no conflict of interest. Dr. Devoto declares that he has no conflict of interest. Professor McGurk declares that he has no conflict of interest.
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This work involves no experimental devices for human participants. Informed consent was obtained from all individual participants included in the study. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
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Mr. Chand, Dr. Keller, Dr. Devoto, and Professor McGurk have no competing interests.
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Chand, M., Keller, D.S., Devoto, L. et al. Furthering Precision in Sentinel Node Navigational Surgery for Oral Cancer: a Novel Triple Targeting System. J Fluoresc 28, 483–486 (2018). https://doi.org/10.1007/s10895-018-2211-x
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DOI: https://doi.org/10.1007/s10895-018-2211-x