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Table 1 Correlation coefficient r, slope and intercept of orthogonal regression across subjects for SUV values in different brain clusters when comparing ZTE- and atlas-attenuation correction (AC) with 68Ge-AC. In addition, mean bias (%) and accuracy (SD of % bias) are given

From: Evaluation of zero-echo-time attenuation correction for integrated PET/MR brain imaging—comparison to head atlas and 68Ge-transmission-based attenuation correction

AC Brain region r Slope Intercept % bias SD
ZTE STR 0.99 1.06 0.09 9.2* 1.6
LR 0.99 1.07 0.06 10.5* 3.2
ACR 0.99 1.09 − 0.01 7.9* 2.9
PCR 0.99 1.04 0.04 6.3* 1.6
CER 0.99 1.03 0.08 7.7* 2.2
WB 0.99 1.04 0.06 8.2* 1.5
Atlas STR 0.99 0.97 0.27 7.5* 4.7
LR 0.97 1.03 0.07 4.5* 4.4
ACR 0.92 1.06 0.02 8.0* 7.1
PCR 0.88 1.03 0.05 6.6* 8.1
CER 0.97 0.92 0.17 3.0 3.7
WB 0.94 0.99 0.10 6.1* 5.6
  1. STR striatum, LR limbic regions, ACR anterior cortical regions, PCR posterior cortical regions, CER cerebellum, WB whole-brain
  2. *p value < 0.05