Responders Nonresponders

P
value

<SUVafter/SUVbefore> 0.45±0.11 0.60±0.24 0.04
  <SUVafter>/<SUVbefore>   0.41±0.11   0.57±0.23   0.03
  <SUVafter-SUVbefore>   2.49±0.93   1.57±0.90   0.02
  <SUVbefore>   4.1±0.94   3.50±0.87   0.08
  <SUVafter>   1.62±0.38   1.97±0.85   0.13
Table 1: Mean values ± standard deviations of possible surrogates for cell survival for responders and non responders with the corresponding P values.