Fig. 1. Framework of FMT rapid reconstruction based on autoencoder

Fig. 2. Diagram of the non-homogeneous cylinder phantom. (a) Model of non-homogeneous cylinder phantom; (b) distribution of shot points at plane of z=15 mm

Fig. 3. Result diagram of single-source reconstruction. (a)-(c) Stereogram of reconstruction results, the 2D cross-section views at planes of x=0 mm and z=15 mm with original data; (d)-(f) stereogram of reconstruction results, the 2D cross-section views at planes of x=0 mm and z=15 mm with AE method

Fig. 4. T1 and T2 reconstruction results using AE method under different dimensionality. (a) Reconstruction results of T1; (b) reconstruction results of T2

Fig. 5. Result diagram of double-sources reconstruction. (a)-(c) Stereogram of reconstruction results, the 2D cross-section views at planes of x=0 mm and z=15 mm with original data; (d)-(f) stereogram of reconstruction results, the 2D cross-section views at planes of x=0 mm and z=15 mm with AE method

Fig. 6. Single source reconstruction results in digital mouse experiments using AE method under different dimensionality

Fig. 7. Results of single source in digital mouse experiments. (a)-(c) Stereogram of reconstruction results, the 2D cross-section views at planes of x=11.9 mm and z=16.4 mm with original data; (d)-(f) stereogram of reconstruction results, the 2D cross-section views at planes of x=11.9 mm and z=16.4 mm with AE method

Fig. 8. Reconstruction results of T1 and T2 when compressed to different dimensions using AE. (a) Reconstruction results of T1; (b) reconstruction results of T2

Fig. 9. Results of double-sources in digital mouse experiments. (a)-(c) Stereogram of reconstruction results, the 2D cross-section views at planes of x=11.9 mm and z=16.4 mm with original data; (d)-(f) stereogram of reconstruction results, the 2D cross-section views at planes of x=11.9 mm and z=16.4 mm with AE method

Table 1. Optical parameters for non-homogeneous cylinder phantom

Table 2. Reconstruction results of single source non-homogeneous cylinder phantom simulation experiments using AE method

Table 3. Quantitative simulation results of single source non-homogeneous cylinder using AE method under different number of excitation sources

Table 4. Quantitative simulation results of single source non-homogeneous cylinder using AE method under different noise levels

Table 5. Quantitative simulation results of double sources non-homogeneous cylinder phantom simulation experiments using AE method

Table 6. Quantitative simulation results of single source in digital mouse experiments using AE method

Table 7. Quantitative simulation results of double sources in digital mouse experiments using AE method