BioMed Research International / 2019 / Article / Tab 2

Research Article

Validation of MR-Based Attenuation Correction of a Newly Released Whole-Body Simultaneous PET/MR System

Table 2

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

SUVsPETMR and PETCTPETMR and PETCTSeg
RhoRD1RhoRD2

SUVmean of main organs
Bone0.985−18.8 ± 5.1%<0.0010.967−19.0 ± 8.3%<0.0010.893
Liver0.973−8.0 ± 3.8%<0.0010.949−3.5 ± 3.6%<0.001<0.001
Lung0.983−12.2 ± 4.6%<0.0010.959−3.3 ± 6.0%0.010<0.001
Lesions within or around bone
SUVmean0.947−18.1 ± 17.4%<0.0010.938−19.3 ± 20.4%<0.0010.519
SUVmax0.997−13.3 ± 10.5%<0.0010.975−17.9 ± 15.1%<0.0010.217
Lesions in soft tissue
SUVmean0.981−8.2 ± 5.8%<0.0010.979−5.5 ± 6.3%<0.001<0.001
SUVmax0.996−7.3 ± 3.6%<0.0010.996−4.4 ± 4.0%<0.001<0.001

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

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