. 2017 Jul 28;90(1076):20170252. doi: 10.1259/bjr.20170252

Table 1.

Coronary CT angiography radiation dose

Demographic	Mean ± SD
CTDI_vol (mGy)	23.0 ± 10.4
Total DLP (mGy cm)	417.6 ± 182.4
Cardiac volume DLP (mGy cm)	362.8 ± 166.6
Minimal z-axis FOV DLP (mGy cm)^a	267.4 ± 130.5
DLP saving per 2-cm FOV reduction (mSv)^a	46.3 ± 21.8

CTDI_vol, CT dose index volume; DLP, dose–length product; FOV, field of view; SD, standard deviation.

^{^a}

Using the 320 × 0.5-mm detector collimation.