%0 Journal Article
%T Empirical Formalism for the Phantom Scatter Factor of Small Fields: Using Different Density Media
%A Saed J. Al Atawneh
%J International Journal of Medical Physics,Clinical Engineering and Radiation Oncology
%P 36-47
%@ 2168-5444
%D 2022
%I Scientific Research Publishing
%R 10.4236/ijmpcero.2022.111004
%X We present the Empirical Formula (EF) to calculate the phantom scatter
factor, <i>S<sub>p</sub></i>, of small
radiation fields under charge particle dis-equilibrium condi<span>tions. The Empirical Formula (EF) was verified by
examining the calculated </span><span>data with
experimentally measured data utilizing the anthropomorphic</span> phantom in
twelve different combinations of beam entry and point location, where <span>the value for <i>S<sub>p</sub></i> per tissue composition was within 3% in 8/12 cases, 5% in</span> 1/12 case<span style=\"font-family:;\" \"=\"\">s</span><span style=\"font-family:;\" \"=\"\">, and 10% in 3/12 cases. Our
results showed a good agreement with experimental data to less than 1% when the
ion chamber was surrounded by <span>the
homogeneous tissue, whether lung, soft tissue, or bone. Indicating that</span> the <span>prediction of the equation is valid, and
it can be reliably used for phantom</span> scatter <span>factor calculation for different homogeneous media under charge particle</span> dis-</span><span style=\"font-family:;\" \"=\"\"> </span><span style=\"font-family:;\" \"=\"\">equilibrium
conditions.</span>
%K Small Field Dosimetry
%K Anthropomorphic Study
%K Phantom Scatter Factor
%K Dosimetry
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=114888