Fig. 4.

Normalized detectability index of the DLM and three levels of the DLRs according to radiation dose levels for 10-mm (a), 5-mm (b), and 1-mm (c) target objects DLM deep learning model, DLR-H deep learning–based image reconstruction algorithm, high strength, DLR-M deep learning–based image reconstruction algorithm, medium strength, DLR-L deep learning–based image reconstruction algorithm, low strength