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Table 2 Confusion matrix of FAR imaging for intraoperative margin assessment of intact WLE specimens compared to gold standard histopathology. Results are shown for the overall cohort as well as for subgroups based on the decay corrected [18F]FDG activity (threshold 97.0 MBq) and invasive tumour grade

From: Intraoperative [18F]FDG flexible autoradiography for tumour margin assessment in breast-conserving surgery: a first-in-human multicentre feasibility study

Cohort

 

Histopathologically positive

Histopathologically negative

High

FAR positive

5

49

FAR negative

2

125

Low

FAR positive

1

19

FAR negative

5

179

Grade 1

FAR positive

3

18

FAR negative

1

110

Grade 2

FAR positive

3

33

FAR negative

6

99

Grade 2

FAR positive

0

15

FAR negative

0

79

Overall

FAR positive

6

68

FAR negative

7

304