Abstract
Diffuse tomography with near-infrared light has biomedical application for imaging hemoglobin, water, lipids, cytochromes, or exogenous contrast agents and is being investigated for breast cancer diagnosis. A Newton–Raphson inversion algorithm is used for image reconstruction of tissue optical absorption and transport scattering coefficients from frequency-domain measurements of modulated phase shift and light intensity. A variant of Tikhonov regularization is examined in which radial variation is allowed in the value of the regularization parameter. This method minimizes high-frequency noise in the reconstructed image near the source–detector locations and can produce constant image resolution and contrast across the image field.
© 1999 Optical Society of America
Full Article | PDF ArticleMore Like This
Sree Harsha Katamreddy and Phaneendra K. Yalavarthy
J. Opt. Soc. Am. A 29(5) 649-656 (2012)
Liang-Yu Chen, Min-Chun Pan, and Min-Cheng Pan
Appl. Opt. 51(1) 43-54 (2012)
Haijing Niu, Ping Guo, Lijun Ji, Qing Zhao, and Tianzi Jiang
Opt. Express 16(17) 12423-12434 (2008)