Table 7: Statistical information about the best class number for clinical PET volume of nonsmall cell lung cancer patient.

CN SNR CP

1 1.000840 0.250000 4.003360 0.509741
2 2.911473 1.142062 2.549312 0.163043
3 9.035780 4.213254 2.144608 0.146897
4 32.665878 16.455158 1.985145 0.078470
5 167.509276 52.633532 3.182558 0.101848