Compared with two Iopromide @ subgroups , Iomeprol @ subgroups showed no significant difference in CT attenuation ( @ @ vs. @ @ for BMI < @ kg/m ( @ ) , p = @ and @ @ vs. @ @ for BMI @ kg/m ( @ ) , p = @ ) , noise ( in various anatomical regions of interest ) and image quality ( @ vs. @ , p = @ ) , but significantly ( @ @ vs. @ @ for BMI < @ kg/m ( @ ) , p < @ and @ @ vs. @ @ for BMI @ kg/m ( @ ) , p < @ ) lower radiation dose , which reflects dose saving of @ % and @ % , respectively .