Table 2.

Correlations of SUVs from different PET images in major organs and in selected lesions.

SUVs	PETMR and PETCT			PETMR and PETCTSeg			P3
	Rho	RD1	P1	Rho	RD2	P2
SUVmean of main organs
Bone	0.985	−18.8 ± 5.1%	<0.001	0.967	−19.0 ± 8.3%	<0.001	0.893
Liver	0.973	−8.0 ± 3.8%	<0.001	0.949	−3.5 ± 3.6%	<0.001	<0.001
Lung	0.983	−12.2 ± 4.6%	<0.001	0.959	−3.3 ± 6.0%	0.010	<0.001
Lesions within or around bone
SUVmean	0.947	−18.1 ± 17.4%	<0.001	0.938	−19.3 ± 20.4%	<0.001	0.519
SUVmax	0.997	−13.3 ± 10.5%	<0.001	0.975	−17.9 ± 15.1%	<0.001	0.217
Lesions in soft tissue
SUVmean	0.981	−8.2 ± 5.8%	<0.001	0.979	−5.5 ± 6.3%	<0.001	<0.001
SUVmax	0.996	−7.3 ± 3.6%	<0.001	0.996	−4.4 ± 4.0%	<0.001	<0.001

Note: SUV, standardized uptake value; max, maximum; PET_MR, MR attenuation correction-based positron emission tomography; PET_CT, PET images from PET/MRI that reconstructed from CT μ-map; PET_CTSeg, PET images from PET/MRI that reconstructed from segmented CT μ-map; Rho, Pearson's correlation coefficient; RD, relative differences; P1 and P2 were statistical P values of RD1 and RD2, respectively; P3, statistical P values of paired t-test between RD1 and RD2.