Posture-dependent dose coefficients of mesh-type ICRP reference computational phantoms for photon external exposures

Physics in Medicine and Biology
Yeon Soo YeomChan Hyeong Kim

Abstract

Recently, the International Commission on Radiological Protection (ICRP) developed new mesh-type reference computational phantoms (MRCPs) that provide high deformability compared with the current voxel-type reference computational phantoms of ICRP Publication 110. Taking advantage of this deformability, in the present study, the MRCPs were deformed to five non-standing postures (i.e. walking, sitting, bending, kneeling, and squatting) by developing and using a systematic posture-change method based on the as-rigid-as-possible (ARAP) shape-deformation algorithm and motion-capture technology. The non-standing MRCPs were then implemented in the Geant4 Monte Carlo code to calculate a comprehensive dataset of dose coefficients (DCs) for photon external exposures. These include the dose coefficients for 29 individual organs/tissues and the dose coefficients for effective doses from 0.01 MeV to 10 GeV in the antero-posterior (AP), postero-anterior (PA), left-lateral (LLAT), right-lateral (RLAT), rotational (ROT), and isotropic (ISO) geometries. To investigate the dosimetric impact of posture, the DCs of the non-standing MRCPs were compared with those of the original MRCPs (in the standing posture). The results showed that organ/tissue...Continue Reading

References

Apr 11, 2006·Radiation Protection Dosimetry·Richard H Olsher, Kenneth A Van Riper
May 26, 2007·IEEE Computer Graphics and Applications·Jonathan Starck, Adrian Hilton
Dec 11, 2007·Annals of the ICRP·J Valentin, UNKNOWN International Commission on Radiation Protection
Mar 29, 2008·IEEE Transactions on Visualization and Computer Graphics·Han-Bing YanYong-Liang Yang
Mar 24, 2011·Physics in Medicine and Biology·Perry B JohnsonWesley E Bolch
Apr 1, 2010·Annals of the ICRP·N Petoussi-HenssUNKNOWN International Commission on Radiation Units and Measurements
May 28, 2014·Physics in Medicine and Biology·Yeon Soo YeomChan Hyeong Kim
Sep 12, 2015·IEEE Transactions on Visualization and Computer Graphics·Zohar Levi, Craig Gotsman
Oct 29, 2015·Physics in Medicine and Biology·Thang Tat NguyenBeom Sun Chung
Mar 13, 2016·Annals of the ICRP·C H KimB S Chung
Sep 21, 2016·Physics in Medicine and Biology·Yeon Soo YeomChoonsik Lee
Apr 14, 2018·Annals of the ICRP·M ZanklC H Kim

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Citations

Jan 6, 2021·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·Chansoo ChoiWesley E Bolch
Jun 4, 2021·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·Chansoo ChoiChan Hyeong Kim

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