Table 5 Comparison of K_i values obtained by nonlinear regression analysis with Ki values obtained by Patlak analysis using various input functions or static scan analysis

K_i (ml min⁻¹ ml⁻¹) ± SD

0.0415 ± 0.013

0.0337 ± 0.009

0.0340 ± 0.008

0.0346 ± 0.009

0.0395 ± 0.011

Percentage difference (p-value)

–

 − 18.8% (< 0.01*)

 − 18.1% (< 0.01*)

 − 16.6% (< 0.01*)

 − 4.8% (0.29)

V₀ ± SD

–

0.39 ± 0.17

0.52 ± 0.25

0.64 ± 0.27

0.64