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Subjective and objective evaluation of image quality with prospective ECG-triggering DSCT (Group A) and non-ECG-gated DSCT (Group B)
| Group A | Group B | P value | |
|---|---|---|---|
| Subjective image quality scores | 4.4 ± 0.1 | 3.8 ± 0.3 | 0.007 |
| Attenuation in the left atrium (HU) | 409.2 ± 85.5 | 226.4 ± 141.6 | 0.003 |
| Noise in the left atrium (HU) | 40.0 ± 15.8 | 18.46 ± 5.6 | 0.004 |
| SNR in the left atrium | 11.7 ± 4.6 | 13.2 ± 8.9 | 0.638 |
SNR, signal to noise ratio
