Shepherd P-F test
3.Based on the F-test of statistics and AIC rule, the critical value of the F-test is determined.
6.The ADC values had statistic significance among benign lesions,malignant lesions and normal tissues,(F-test,SNK-q-test,P<0.05),b=1000,x=1.4276×10-3mm/s as standard to diagnose benign and malignant lesions,the sensitivity was 90.6%,specificity was 84.6% and accuracy was 87.9%.


