Few-View Prereconstruction Guided Tube Current Modulation Strategy Based on the Signal-to-Noise Ratio of the Sinogram

Table 2

The SNR and CNR of the reconstructed images in Figure 4.

Reconstructed images	Figure 4(a)	Figure 4(b)	Figure 4(c)
SNR
R1	10.93	11.55	15.71
R2	17.26	20.01	24.63
R3	15.93	21.73	30.94
R4	23.14	28.00	27.29
CNR
R2 and R3	1.58	1.81	2.58