Table 2.

Image quality. SNR = signal-to-noise ratio; CNR = contrast-to-noise ratio.

Protocol	Image noise	SNR bone	CNR bone
Protocol 1	16.40 ± 3.82	9.01 ± 3.64	5.28 ± 3.68
Protocol 2	13.22 ± 3.16	11.18 ± 4.55	6.76 ± 4.54
Protocol 3	13.27 ± 1.97	11.01 ± 3.86	6.44 ± 4.20
Protocol 4	8.48 ± 1.47	17.99* ± 7.46	10.39* ± 6.97

Means with standard deviations. *Significantly higher (p < 0.004) than in the other protocols.