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Table 2 R1 mean % bias, precision (SD of % bias) and correlation coefficient (r) for all clusters of brain regions when comparing Atlas-, ZTE- and MaxProb-MRAC against 68Ge-MRAC. Additionally, slope and intercept of Deming regression lines are given

From: Accuracy and precision of zero-echo-time, single- and multi-atlas attenuation correction for dynamic [11C]PE2I PET-MR brain imaging

Brain region

MRAC

% bias

SD

r

Slope

Intercept

WB

Atlas

0.44

1.67

0.98

1.12

-0.10

ZTE

0.99

1.21

1.00

0.94

0.06

MaxProb

1.37

2.69

0.93

1.11

-0.08

ACR

Atlas

1.54*

2.85

0.98

1.10

-0.07

ZTE

1.14

2.49

0.97

1.06

-0.04

MaxProb

2.85*

4.12

0.96

1.07

-0.03

PCR

Atlas

-0.95

2.91

0.97

1.05

-0.05

ZTE

-0.51

1.47

0.99

0.99

0.00

MaxProb

1.14

4.38

0.92

1.06

-0.04

STR

Atlas

2.44*

2.53

0.99

0.99

0.03

ZTE

2.71*

2.06

0.99

0.99

0.03

MaxProb

3.17*

3.67

0.98

1.01

0.02

LR

Atlas

2.29*

3.26

0.97

1.03

-0.01

ZTE

3.09*

3.33

0.97

1.00

0.02

MaxProb

0.35

3.94

0.98

1.06

-0.04

  1. ACR anterior cortical regions, PCR posterior cortical regions, STR striatal regions, LR limbic regions, WB whole brain
  2. *p value < 0.05. Friedman test with post-hoc tests (comparison to 68Ge-AC) and Dunn’s correction