. 2018 Nov 27;290(2):400–409. doi: 10.1148/radiol.2018181657

Table 3:

Attenuation, Noise, and CNR in the Abdomen according to Dose and Reconstruction Method

graphic file with name radiol.2018181657.tbl3.jpg

Note.—Data are means ± standard deviations. ASIR = adaptive statistical iterative reconstruction, CNR = contrast-to-noise ratio, FBP = filtered back projection, RD = reduced dose, SD = standard dose. Numbers after the reconstruction method are the reconstruction percentage.

*No significant difference in attenuation was identified between reconstructions.

^†The attenuation of the single largest lesion that fulfilled study criteria was measured in each participant.

^‡Noise = Hounsfield unit standard deviation.

^§CNR was significantly different from the next-best reconstruction except between RD ASIR 80 and RD Veo 3.0 (P = .97). CNRs ranked from highest to lowest are as follows: SD ASIR-V 60, SD ASIR 80, SD ASIR-V 30, RD ASIR-V 60, RD ASIR 80, RD Veo 3.0, RD ASIR-V 30, and SD FBP.