Simple Calculation Method to Scatter Factor to the Rectangular Field of Linear Accelerator

Objective To design up a simple method to calculate the scatter factor Sc,p of X ray linear accelerator,which can be implemented in clinical works. Methods Firstly,the scatter factors of square fields have been measured and the relation between the scatter factor and the length of fields has been made;Secondly,the equivalent square fields of rectangular fields are calculated according to the formula established by kim. The scatter factors of rectangular fields are determined according to the relation betw...