TABLE 4:

Analysis of Image Quality Scores

Feature, Reader	Accelerated	Clinical	Difference	p
Artifacts
1	2.02 ± 0.14	2.04 ± 0.19	0.02 ± 0.19	0.465
2	2.34 ± 0.69	2.35 ± 0.62	0.01 ± 0.69	0.869
3	2.05 ± 0.21	2.05 ± 0.21	0.00 ± 0.19	1.000
4	2.20 ± 0.40	2.21 ± 0.41	0.01 ± 0.44	0.862
5	2.04 ± 0.64	2.10 ± 0.59	0.06 ± 0.78	0.441
6	2.10 ± 0.33	2.10 ± 0.30	0.00 ± 0.41	1.000
Signal-to-noise ratio
1	1.01 ± 0.10	1.49 ± 0.59	0.48 ± 0.59	< 0.001
2	1.98 ± 0.96	2.13 ± 0.81	0.15 ± 0.95	0.139
3	1.06 ± 0.23	1.15 ± 0.36	0.09 ± 0.42	0.052
4	1.12 ± 0.33	1.66 ± 0.58	0.54 ± 0.62	< 0.001
5	1.06 ± 0.23	1.36 ± 0.48	0.31 ± 0.50	< 0.001
6	1.31 ± 0.55	1.81 ± 0.59	0.50 ± 0.66	< 0.001
Sharpness
1	1.21 ± 0.53	1.31 ± 0.62	0.09 ± 0.54	0.110
2	2.06 ± 0.94	2.19 ± 0.83	0.13 ± 0.98	0.219
3	1.12 ± 0.40	1.14 ± 0.40	0.02 ± 0.45	0.737
4	1.75 ± 0.57	1.41 ± 0.58	−0.34 ± 0.69	< 0.001
5	1.20 ± 0.49	1.39 ± 0.54	0.19 ± 0.66	0.012
6	1.46 ± 0.70	1.78 ± 0.70	0.31 ± 0.80	< 0.001
Overall image quality
1	1.16 ± 0.44	1.34 ± 0.61	0.19 ± 0.51	0.001
2	2.06 ± 0.92	2.22 ± 0.81	0.16 ± 0.93	0.095
3	1.10 ± 0.33	1.13 ± 0.36	0.03 ± 0.42	0.560
4	1.75 ± 0.64	1.94 ± 0.69	0.19 ± 0.70	0.019
5	1.25 ± 0.58	1.43 ± 0.63	0.18 ± 0.71	0.025
6	1.50 ± 0.68	1.95 ± 0.68	0.45 ± 0.78	< 0.001

Note—Except for p values, data are mean ± SD. Image quality was rated on a 4-point scale, with 1 being the best quality and 4 being the worst.