Fig. 4
Numerical experiments for the quantitativeness analysis with CCS = 40 mm: a the evaluation metrics with absorption coefficients being 0.005, 0.006, and 0.008 mm−1, respectively, at SNR min = 20 dB (left) and SNR min = 30 dB (right); b the reconstructed images with absorption coefficients being 0.005 mm−1, at SNR min = 20 dB (left) and SNR min = 30 dB (right)