@inproceedings{757e0efd07464a34948f33ac35e2291f,
title = "Detection of an object in a phantom tissue using a spatial filter",
abstract = "We report the detection of an object inside a phantom tissue using a spatial filter and a 5 mW He-Ne Laser. The phantom tissue is composed of 8% scattering Polystyrene spheres (particle size 579 nm) and is diluted to different concentrations in water. The solution is placed inside of a cuvette of length 5 cm and width 5 cm. The spatial filter, composed of a 4 cm plano-convex lens and a 10 urn pinhole, is able to extract ballistic and quasi-ballistic photons from the transmitted light. A photomultiplier tube is used for detection, and a lock-in amplifier is used to reduce the amount of noise in the signal. We are able to detect the object in a phantom tissue of 20 mean free paths [mfp) (concentration .016%) with a contrast of 99.0%. The contrast in a tissue with 30 mfp (concentration .024%) is 22.7%.",
author = "Stephens, {Dawn V.} and Frank Tittel and Lihong Wang and Andreas Hielscher and Steve Jacques",
note = "Funding Information: the Rice Quantum Institute, and the Spend a Summer with a Scientist Program at Rice University for their financial contributions. Publisher Copyright: {\textcopyright} 1994 SPIE.; Advances in Laser and Light Spectroscopy to Diagnose Cancer and Other Diseases 1994 ; Conference date: 23-01-1994 Through 29-01-1994",
year = "1994",
month = may,
day = "19",
doi = "10.1117/12.175994",
language = "English (US)",
volume = "2135",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
pages = "200--208",
booktitle = "Advances in Laser and Light Spectroscopy to Diagnose Cancer and Other Diseases 1994",
}