In vitro measurements of optical properties of porcine brain using a novel compact device

Medical & Biological Engineering & Computing
Nazila YavariS Andersson-Engels

Abstract

Knowledge of the optical properties of tissues can be applied in numerous medical and scientific fields, including cancer diagnostics and therapy. There are many different ways of determining the optical properties of turbid media. The paper describes measurements of the optical properties of porcine brain tissue using novel instrumentation for simultaneous absorption and scattering characterisation of small turbid samples. Integrating sphere measurements are widely used as a reference method for determination of the optical properties of relatively thin turbid samples. However, this technique is associated with bulky equipment, complicated measuring techniques, interference compensation techniques and inconvenient sample handling. It is believed that the sphere for some applications can be replaced by a new, compact device, called the combined angular and spatially resolved head sensor, to measure the optical properties of thin turbid samples. The results compare very well with data obtained with an integrating sphere for well-defined samples. The instrument was shown to be accurate to within 12% for microa and 1% for micro's in measurements of intralipid-ink samples. The corresponding variations of data were 17% and 2%, respe...Continue Reading

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Citations

Feb 23, 2010·Lasers in Medical Science·M AtifM Nawaz
Oct 31, 2006·Photomedicine and Laser Surgery
May 8, 2008·Journal of Neural Engineering·Johan AntonssonKarin Wårdell

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