if T-Ts=0 ~tissue temp elevation due to heating and(pc),≈(pc)b≈(pc)k,=const,.w。=const. 0=a-0-w,0+g, at pc then0r,t=0)=0;0r=o,t)=0; 9p=P.60) 0<t<tp 9p=0 t>tp Carslaw Jaeger,1959 at anyt (r,t)=y(t-s)s.emads gp Y= 8π(pc)ax5 probe temp.r→0，t>tp)Carslaw & Jaeger, 1959 2 1.5 / 4 ( ) ( ) 0 1.5 at any t ( , ) ( ) 8( ) probe temp. ( 0, ) p b t wts r ts p p r t t s e e ds q c r tt                   2 ( ) ( ) ( ) , . 1 ( , 0) 0; ( , ) 0; (0) 0 0 t ss tb t b b p p p if T T tissue temp elevation due to heating and c c c k const w const w q t c rt r t then q P t tp q t tp                                   