Experimental Study Of The Biological Tissue Scattering Phase Function

Accurate measurement of tissue optical parameters is very important to tissueoptics.It's also a basis for further research of light propagation within tissues, whichcan offer vital guidance to laser's clinic application such as laser surgery and laserdynamic. Scattering phase function is one of the important optical parameters,At thefirst ,The paper introduce the theory of transportation which is used to study thedistribution of scattrring light and transportation in tissue , introduce the transportingequation of different polarized light;The method of the measurement of scatteringphase function in literature are sumerized ,the paper also analysize the problem ofpolarization which has the important relation to the measurement of scattering phasefunction;We can get the scattering phase function of different diameter spheres bythe theory of Mie;Mie theory can also be used to calculate the distribution of thedifferent polarized light which is scattered by the biological tissue particle .It candraw the conclusion that there's more important influence to measure the biologicaltissue phase function with different polarized light.So,to get accurate phase functionby experiment ,the natural(unpolarized)light source should be choosen.The paper describe the experiment in detail,including the device of the experiment,the preparation of sample,the principle of measurement,the method of how to get thedate that we need.There are a lot of work of other people in the paper and we alsogive new advice to the experiment. The first is that it must be used the unpolarizedlight source when measuring the scattering phase function .The second we calculatethe influence of different step length when measuring g . g is the important parameterof HG phase function. The experiment prove that our estimate is correct.At last wemeasure the scattering phase function of Intralipid which is a kind of simulativesolution of biological tissue and draw the conclusion that there is more differentionbetween the HG phase function and the measured phase function by comparingthe HG scattering phase function with the measured scattering phase function. Whatwe have done will provide a favorable basis for further research.