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EJNMMI Physics

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
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