Table 1.
Overview of the extracted perfusion parameters for the entire primary tumour, small and large tumours. P-values are calculated using a t-test between small and large tumours.
All tumours (N=33) | Small tumours (<30cm3) (N=8) | Large tumours (>30 cm3) (N=25) | small versus large tumours | ||
---|---|---|---|---|---|
mean ± SD | mean ± SD | mean ± SD | p-value | ||
Blood Flow [ml/100ml/min] | Maximum slope | 36.5 ± 20.8 | 39.2 ± 34.6 | 35.7 ± 14.9 | 0.996 |
Deconvolution alg. | 74.7 ± 47.7 | 92.7 ± 87.0 | 68.9 ± 26.1 | 0.250 | |
Blood Volume [ml/100ml] | Maximum slope | 7.4 ± 4.0 | 9.1 ± 6.4 | 6.9 ± 2.9 | 0.374 |
Deconvolution alg. | 8.9 ± 4.3 | 10.7 ± 5.9 | 8.4 ± 3.6 | 0.434 | |
Patlak | 7.9 ± 4.4 | 8.3 ± 4.8 | 7.8 ± 4.4 | 0.969 | |
Permeability [ml/100ml/min] | Deconvolution alg. | 16.1 ± 10.0 | 17.9 ± 13.4 | 15.5 ± 8.9 | 0.885 |
Patlak | 21.6 ± 9.7 | 26.4 ± 9.8 | 20.0 ± 9.3 | 0.222 | |
FDG-PET [SUV] | Mean SUV | 6.1 ± 2.8 | 4.5 ± 2.3 | 6.5 ± 2.8 | <0.001 |
Maximum SUV | 13.8 ± 6.1 | 9.0 ± 4.8 | 15.3 ± 5.7 | 0.008 |
N, number; SD, standard deviation; alg, algorithm; SUV, standardized uptake value.