Diffuse optical tomography image reconstruction based on sparse recovery methods

Hao Jan Sun, Hsiang Wen Hou, Chia Ching Chou, Wai-Chi  Fang

研究成果: Conference contribution同行評審

摘要

Diffuse Optical Tomography (DOT) is a non-invasive image detecting technique. It is used to assess spatial variation with absorption and scattering coefficients for tumor detection, distribution of oxygen concentration analysis, oxygenated hemoglobin concentration measurement or deoxygenated hemoglobin concentration measurement. In this paper, we use sparse recovery methods for DOT image reconstruction. Using the non-linear iterative method to reconstruct the DOT image can increase the resolution of each reconstructed layer. Sparse recovery methods use the p-norm regularization in the estimation problem with 0 < p <= 1. When the number of independent measurements is limited by nature, which is a typical case for diffuse optical tomographic image reconstruction, sparse recovery methods present good performance. According to the simulation results the reconstruction algorithm can parse the tumor clearly with p=0.6. The projection errors are 0.45357, 0.44588, 0.46781, 0.44109, and 0.47174(tumor / background) in each tumor position case using p=0.6. Since that the projection errors with p=0.6 are smaller than projection errors using p=1 or p=2, p=0.6 is selected to be the reconstructed parameter to have the best reconstructed results for the same iteration numbers. Simulation results show that the sparse recovery methods are good to improve the reconstructed image quality.

原文English
主出版物標題IEEE Biomedical Circuits and Systems Conference
主出版物子標題Engineering for Healthy Minds and Able Bodies, BioCAS 2015 - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781479972333
DOIs
出版狀態Published - 4 12月 2015
事件11th IEEE Biomedical Circuits and Systems Conference, BioCAS 2015 - Atlanta, United States
持續時間: 22 10月 201524 10月 2015

出版系列

名字IEEE Biomedical Circuits and Systems Conference: Engineering for Healthy Minds and Able Bodies, BioCAS 2015 - Proceedings

Conference

Conference11th IEEE Biomedical Circuits and Systems Conference, BioCAS 2015
國家/地區United States
城市Atlanta
期間22/10/1524/10/15

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