Input files with ORNL—mathematical phantoms of the human body for MCNP-4B

Protection against ionizing radiation requires information on the absorbed doses in organs of the human body. Implantation of many dosimeters in the human body is undesirable (or impossible), so the doses in organs are not measurable and some kind of dose calculation has to be applied. Calculation of doses in organs requests: (a) an exact description of the geometry of organs, (b) the chemical constitution of tissues, and (c) appropriate computer programs. The first two items, (a) and (b), make a so-called “phantom”. In another words, the “phantom of a human body” is a mathematical representation of the human body including all other relevant information. All organs are represented with geometrical bodies (like cylinders, ellipsoids, tori, cones etc.), which are described with suitable mathematical equations. A corresponding chemical constitution for various types of organ tissues is also defined.MCNP-4B (Monte Carlo N-Particle) is often used as transport code. Users of this software prepare an “input file” providing all necessary information for program execution. This information includes: (a) source definition—type of ionizing radiation, energy spectrum, and geometry of the source; (b) target definition—material constitution, geometry, location in respect to the source etc.; (c) characterization of absorbing media between the source and target; (d) output tally, etc.This paper presents input files with “human phantoms” for the MCNP-4B code. The input files with “phantoms” were prepared based on publications issued by the Oak Ridge National Laboratory (ORNL). Seven input files relating to different age groups (newborn, 1, 5, 10, 15 years, as well as, male and female adults) are presented here. A test example and comparison with other data found in literature are also given.Program summaryTitle of program: INPUT FILES, AMALE, AFEMALE, AGE15, AGE10, AGE5, AGE01, NEWBCatalogue identifier:ADYF_v1_0Program summary URL:http://cpc.cs.qub.ac.uk/summaries/ADYF_v1_0Program obtainable from: CPC Program Library, Queen's University of Belfast, N. IrelandComputer: PC Pentium 3+Operating systems: Windows 98Programming language used: FortranMemory required to execute with typical data: 128 MBNo. of lines in distributed program, including test data, etc.: 2879No. of bytes in distributed program, including test data, etc.: 23 151Distribution format: tar.gzExternal subprograms used: The entire code must be linked with the MCNP-4BNature of problem: The human body and all organs are represented with equations of 3D geometrical bodies. All equations and other relevant data (material composition, densities, etc.) were programmed as input files for MCNP-4B