Table 3.

The median values of the goodness of fit (χ²) for the 3 AIFs.

	PS	LG	DE
TP	0.2962 (0.1070 – 0.9060)	0.2470 (0.0795 – 0.7537)	0.2493 (0.0903 – 1.4474)
TN	0.1764 (0.0390 – 1.2353)	0.1609 (0.0391 – 1.2426)	0.1539 (0.0337 – 1.2359)
FP	0.2106 (0.0832 – 0.9487)	0.2216 (0.0562 – 0.9952)	0.1823 (0.0395 – 1.0267)
FN	0.1073 (0.0691 – 0.2736)	0.0750 (0.0529 – 0.1361)	0.0753 (0.0367 – 0.5300)

TP – true positives (enhancing regions with positive biopsy)

TN – true negatives (non-enhancing regions with negative biopsies)

FP – false positives (enhancing regions with negative biopsies)

FN – false negatives (non-enhancing regions with positive biopsies)

PS – patient specific AIF

LG – average of individual measured AIFs fitted to double Gaussian plus exponential function

DE – population average double exponential AIF