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. 2018 Dec 19;24(5):051407. doi: 10.1117/1.JBO.24.5.051407

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© The Authors.

Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Fig. 4 — (a)–(d) Examples of reconstructed images for increased intensity of absorption coefficient but with decreased edge-to-edge distance in the case of two inclusions. The first row is the ground truth images. From the second row to the last row, the images are reconstructed using Tikhonov regularization and BPNN, respectively. The edge-to-edge distance and the true values of absorption coefficients for each case are shown at the top of the figure. The reconstructed images of each column are shown at the same scale.