Table 1.

Image quality scores (average ± standard deviation) from two musculoskeletal radiologists for Standard MSI and accelerated MSI with bin-by-bin compressed sensing and RPCA reconstructions. A one-way paired Wilcoxon test was used to assess the null hypothesis that RPCA and bin-by-bin CS images were at least one point worse than standard MSI images. All null hypotheses were rejected at the 0.05 level.

	Standard MSI	Bin-by-bin CS		RPCA
	Mean ± Std. Dev. (Reader 1/Reader 2)	Mean ± Std. Dev. (Reader 1/Reader 2)	P-value	Mean ± Std. Dev. (Reader 1/Reader 2)	P-value
Image quality	3.5 ± 0.71/3.5 ± 0.50	3.1 ± 0.60/3.1 ± 0.60	0.017	3.2 ± 0.43/3.4 ± 0.48	0.004
Sharpness away from metal	3.6 ± 0.48/3.5 ± 0.50	3.1 ± 0.33/3.0 ± 0.50	0.007	3.5 ± 0.50/3.5 ± 0.50	0.001
Sharpness near metal	3.4 ± 0.48/3.1 ± 0.78	3.0 ± 0.50/3.0 ± 0.71	< 0.001	3.2 ± 0.43/3.0 ± 0.71	0.001
Blockiness/artificial appearance	3.9 ± 0.33/3.8 ± 0.43	3.5 ± 0.71/3.5 ± 0.71	0.009	4.0 ± 0.00/4.0 ± 0.00	< 0.001
Signal loss near metal	3.2 ± 0.66/3.0 ± 0.87	3.4 ± 0.48/3.0 ± 0.71	< 0.001	3.6 ± 0.48/3.4 ± 0.70	< 0.001