Diffusion reflectance spectroscopy measurements targeted with gold nanoparticles (GNPs) can identify residual cutaneous squamous cell carcinoma (SCC) in excision borders. Human SCC specimens were stained with hematoxylin and eosin to identify tumor borders, and reflected onto an unstained deparaffinized section. Diffusion reflection of three sites (normal and SCC) were measured before and after GNPs targeting. Hyperspectral imaging showed a mean of 2.5 sites with tumor per specimen and 1.2 tumor-free (p < 0.05, t-test). GNPs were detected in 25/30 tumor sites (sensitivity 83.3%, false-negative rate 16.6%) and 12/30 non-tumor sites (specificity 60%, false-positive rate 40%). This study verifies the use of nanotechnology in identifying SCC tumor margins. Diffusion reflection scanning has high sensitivity for detecting the residual tumor.
|State||Published - 17 Jan 2020|
Bibliographical noteFunding Information:
This research was partially funded by the Zanvyl and Isabelle Krieger Fund, Baltimore, Maryland, USA (N.G.-C.) and the Rabin Medical Center Young Investigators Award, Petach Tikva, Israel (A.O.).
© 2020 by the authors.
- Diffusion reflection
- Epidermal growth factor receptor
- Gold nanoparticles
- Hyperspectral imaging
- Squamous cell carcinoma