Advanced Example ICRP110_HumanPhantoms


Responsible Geant4 Collaborator: Susanna Guatelli, Centre For Medical Radiation Physics, Wollongong University, Australia.

Developers: Matthew Large (1), Susanna Guatelli (1) and Alessandra Malaroda (1)

  1. Centre For Medical Radiation Physics (CMRP), University of Wollongong, NSW, Australia

Short description

This Geant4 example models the ICRP110 reference computational human phantoms [1] and calculates the dose in individual voxels and in entire organs. The radiation field can be easily defined using the Geant4 General Particle Source. The example has been introduced in Geant4 10.7 and can be used for radiation protection studies, internal dosimetry in nuclear medicine applications, dosimetry in radiotherapy applications.

The human male phantom is created from a whole-body clinical CT image set of a 38yr old individual with height 176 cm and mass approximately 70 kg. Similarly, the human female phantom was created from a set of whole body CT images of a 43yr old individual with height 163 cm and weight 60 kg. The CT scans were acquired with both individuals laying supine and with arms resting parallel alongside the body. Both sets of CT data were then scaled to closely approximate the ICRP adult Reference Male and Reference Female, defined in previous ICRP publications [2, 3].

The example is documented in M. Large et al., “Modelling ICRP110 Adult Reference Voxel Phantoms for dosimetric applications: Development of a new Geant4 Advanced Example”, Journal of Physics: Conference Series, Volume 1662, Micro-Mini & Nano Dosimetry and Innovative Technologies in Radiation Oncology - MMND ITRO 2020 10-16 February 2020, Wollongong, Australia. Available online: Note: If using this Geant4 advanced example, it is kindly asked to cite this paper and Reference [1].

How to use the example is described in detail in the README file.

ICRP110 Phantoms modelled in Geant4
Figure 1: Male and Female ICRP110 Phantoms modelled in Geant4.


The authors acknowledge that this Geant4 application has been implemented with the kind permission of the International Commission on Radiological Protection (ICRP).

All data files used for the modelling of the anatomies in Geant4 were obtained from the ICRP’s website on publication 110 under “Supplementary Data”. Available online at


[1] HG Menzel, C Clement, and P DeLuca. ICRP publication 110. “Realistic reference phantoms: an icrp/icru joint effort: A report of adult reference computational phantoms”, Annals of the ICRP, 39(2):1, 2009. URL:

[2] Valetin J 2002 Basic anatomical and physiological data for use in radiological protection: reference values: ICRP Publication 89 Ann. ICRP vol. 32 (Oxford: Elsevier) pp 1-277.

[3] Valetin J 2007 The 2007 recommendations of the international commission on radiological protection Ann. ICRP vol 37 (Oxford: Elsevier) pp 1-133.

Last updated: 17/02/2022 by S. Guatelli