Table 5. Reconstruction time for both 2D and 3D imaging of the lungs with the proposed method.

The data acquisition rate is fixed at 7Hz or approximately 0.14s.

Method	one-step GN	PDIPM	ANN	One-step GN + ANN
2D (s)	0.02	1.00	0.05	0.09
3D (s)	0.03	5.04	0.13	0.29