For non-contrast head PCCT, the median volume CT dose index (CTDIvol) ranged from 16.1 to 24.0 mGy and the dose-length product (DLP) ranged from 311 to 608 mGy·cm, while for non-contrast chest PCCT, the median CTDIvol ranged from 0.3 to 0.8 mGy and the DLP ranged from 7 to 27 mGy·cm, with values increasing according to patient weight.