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Table 2 Correlation coefficient r, slope and intercept of orthogonal regression across subjects for SUVR 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

1.00

0.02

1.4*

2.1

LR

0.96

0.94

0.08

2.6*

2.8

ACR

0.97

1.14

− 0.12

0.2

2.8

PCR

0.97

1.01

− 0.02

− 1.3*

1.6

WB

0.94

0.97

0.03

0.5

0.9

Atlas

STR

0.99

1.00

0.07

4.4*

3.2

LR

0.94

0.94

− 0.01

4.4*

3.5

ACR

0.92

1.23

− 0.16

4.8*

4.8

PCR

0.77

1.21

− 0.17

3.4*

5.6

WB

0.68

1.41

− 0.35

2.9

2.9

  1. STR striatum, LR limbic regions, ACR anterior cortical regions, PCR posterior cortical regions, WB whole-brain
  2. *p value < 0.05