Table 3 Radiation dose (values are shown as the means ± standard deviations).

From: Image Quality and Radiation Dose for Prospectively Triggered Coronary CT Angiography: 128-Slice Single-Source CT versus First-Generation 64-Slice Dual-Source CT

Radiation dose

128-MSCT

DSCT

P

Volume CT dose index (mGy)

12.0 ± 3.1

19.6 ± 4.5

≤0.001

Dose-length product (mGy.cm)

175.5 ± 48.0

262.2 ± 61.3

≤0.001

Effective dose (mSv)

3.0 ± 0.8

4.5 ± 1.0

≤0.001

  1. P ≤ 0.01 for comparisons of the volume CT dose index, dose-length product and effective dose between the two groups.
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