Figure 7.

The photon starvation artifacts are shown in images of 53 cm sized phantom scanned with same low‐dose protocol of ${\text{CTDI}}_{\text{vol}}=29.93\hspace{0.17em}\text{mGy}$, and reconstructed with different reconstruction algorithms: (a) the image is reconstructed with FBP; (b) the image is reconstructed with ${\text{iDose}}^4$ and noise reduction level 6.