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Table 1 Correspondence between kinfitr and PMOD

From: Kinfitr — an open-source tool for reproducible PET modelling: validation and evaluation of test-retest reliability

 

Pearson’s r

ICC

Bias (%)

Ligand

Model

Region 1

Region 2

Region 1

Region 2

Bias 1

Bias 2

Invasive

[11C]PBR28

2TCM

1.00

1.00

0.99

1.00

2.01

1.19

Logan

1.00

1.00

0.99

0.99

0.47

− 0.27

MA1

1.00

0.99

0.95

0.97

10.07

9.55

[11C]PK11195

2TCM

1.00

0.98

1.00

0.98

1.16

0.69

Logan

1.00

0.97

0.99

0.94

− 3.40

− 5.88

MA1

0.99

0.95

0.97

0.89

4.99

9.54

Non-invasive

[11C]AZ10419369

SRTM

1.00

1.00

1.00

1.00

-0.17

0.13

ref Logan

0.99

0.99

0.93

0.91

− 2.95

− 3.55

MRTM2

0.97

0.96

0.86

0.80

− 3.94

− 5.35

[11C]SCH23390

SRTM

1.00

1.00

1.00

1.00

0.24

0.53

ref Logan

0.99

0.99

0.88

0.96

− 5.26

− 4.31

MRTM2

1.00

1.00

0.98

0.99

− 2.07

− 2.17

  1. Region 1 corresponds to the occipital cortex for the radioligand [11C]AZ10419369, the striatum for [11C]SCH23390 and the thalamus for both (R)-[11C]PK11195 and [11C]PBR28. Region 2 corresponds to the frontal cortex for all four radioligands which were used in this study. Abbreviations: 2TCM two-tissue compartmental model, Logan invasive Logan plot, MA1 Ichise’s Multilinear Analysis 1, SRTM simplified reference tissue model, ref Logan reference tissue Logan plot, MRTM2 Ichise's Multilinear Reference Tissue Model 2 (MRTM2), ICC intra-class correlation coefficient, Pearson’s r Pearson’s correlation coefficient