Risley prism scanner for biological tissue inspection with ballistic photons

Beethoven Bravo-Medina; Marija Strojnik; Erick Ipus; Azael Mora-Nuñez

doi:10.1117/12.2526139

9 September 2019 Risley prism scanner for biological tissue inspection with ballistic photons

Beethoven Bravo-Medina, Marija Strojnik, Erick Ipus, Azael Mora-Nuñez

Proceedings Volume 11128, Infrared Remote Sensing and Instrumentation XXVII; 111280Y (2019) https://doi.org/10.1117/12.2526139
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

The ballistic photons have been proposed for biological-tissue characterization. These photons keep its propagation direction when they are propagated through a material. They are rapidly attenuated in accordance with the density and thickness of the medium. The penetration depth for these photons is about 9 millimeters in human tissue. This attenuation may provide information to detect an inhomogeneity in the material (a possible tumor in human tissue). In order to enhance the detection of ballistic photons, interferometric setups have been proposed. Unfortunately, these setups only allow transmission measurement at a single point. We propose a novel technique using Risley prisms for area-scan with ballistic photons.

Citation Download Citation

Beethoven Bravo-Medina, Marija Strojnik, Erick Ipus, and Azael Mora-Nuñez "Risley prism scanner for biological tissue inspection with ballistic photons", Proc. SPIE 11128, Infrared Remote Sensing and Instrumentation XXVII, 111280Y (9 September 2019); https://doi.org/10.1117/12.2526139

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KEYWORDS

Prisms

Photons

Scanners

Interferometry

Tissue optics

Inspection

Refractive index

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