Rapid convergence to the inverse solution regularized with Lorentzian distributed function for near-infrared continuous wave diffuse optical tomography

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Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/49878

Title:	Rapid convergence to the inverse solution regularized with Lorentzian distributed function for near-infrared continuous wave diffuse optical tomography
Authors:	Pan,MC;Pan,MC
Contributors:	生物醫學工程研究所
Date:	2010
Issue Date:	2012-03-27 16:25:19 (UTC+8)
Publisher:	國立中央大學
Abstract:	A promising method to achieve rapid convergence for image reconstruction is introduced for the continuous-wave near-infrared (NIR) diffuse optical tomography (DOT). Tomographic techniques are usually implemented off line and are time consuming to realize image reconstruction, especially for NIR DOT. Therefore, it is essential to both speed up reconstruction and achieve stable and convergent solutions. We propose an approach using a constraint based on a Lorentzian distributed function incorporated into Tikhonov regularization, thereby rapidly converging a stable solution. It is found in the study that using the proposed method with around five or six iterations leads to a stable solution. The result is compared to the primary method usually converging in similar to 25 iterations. Our algorithm rapidly converges to stable solution in the case of noisy (>20 dB) detected intensities. (C) 2010 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3299727]
Relation:	JOURNAL OF BIOMEDICAL OPTICS
Appears in Collections:	[Institute of Biomedical Engineering] journal & Dissertation

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