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Proceedings Paper

Paired-agent imaging for resection during surgery (PAIRS) of head and neck squamous cell carcinomas (Conference Presentation)
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Paper Abstract

Ninety percent of patients with head and neck squamous cell carcinomas (HNSCC) have overexpression of epidermal growth factor receptor (EGFR), which is correlated with poor prognosis. Complete surgical resection of HNSCC tumors has a large impact on patient survival, where detection of tumor at or close to surgical margins increases the risk of death at 5-years by 90%. In addition, large surgical margins can greatly increase the morbidity experienced by the patient due to functional and cosmetic damage of oral and facial structures. Single fluorescence targeting agents are often used for tumor detection in in vivo pre-clinical imaging; however, the arising signal is qualitative at best because it is a complex mixture of vascular perfusion, vascular leakage, inhibited lymphatic clearance, and receptor binding. In vivo ratiometric receptor concentration imaging (RCI) allows quantification of receptor expression (hence identification of cancerous tissue) by utilizing co-administered paired-agents consisting of a targeted agent and non-targeted perfusion agent to reference the plasma delivery and leakage. A panel of HNSCC tumors with varying levels of EGFR expression (SCC-15 >SCC-25 > SCC-09) have been imaged using ABY-029, a clinically relevant anti-EGFR affibody labeled with IRDye 800CW, and affibody control imaging agent labeled with IRDye 680RD. RCI maps of in vivo tissue have been created and are spatially correlated with EGFR and CD31 immunohistochemistry and basic H and E staining. The RCI threshold parameters for distinguishing tumor from normal tissues (skin and muscle) and the accuracy of margin detection in these tumors will be presented. RCI surgical resection will be further developed using a novel multi-channel, gated fluorescence-guided surgery (FGS) imaging system that is capable of performing RCI in normal room light.

Paper Details

Date Published: 26 April 2016
PDF: 1 pages
Proc. SPIE 9696, Molecular-Guided Surgery: Molecules, Devices, and Applications II, 96960T (26 April 2016); doi: 10.1117/12.2220074
Show Author Affiliations
Kimberley S. Samkoe, Geisel School of Medicine (United States)
Kenneth M. Tichauer, Illinois Institute of Technology (United States)
Eunice Chen, Geisel School of Medicine (United States)
Jason R. Gunn, Thayer School of Engineering at Dartmouth (United States)
P. Jack Hoopes, Geisel School of Medicine (United States)
Wendy A. Wells, Geisel School of Medicine (United States)
Tayyaba Hasan, Wellman Ctr. for Photomedicine (United States)
Brian W. Pogue, Thayer School of Engineering at Dartmouth (United States)


Published in SPIE Proceedings Vol. 9696:
Molecular-Guided Surgery: Molecules, Devices, and Applications II
Brian W. Pogue; Sylvain Gioux, Editor(s)

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