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Teles, P.* ; Mendes, M.* ; Zankl, M. ; de Sousa, V.* ; Santos, A.I.* ; Vaz, P.*

Assessment of the absorbed dose in the kidney of nuclear nephrology paediatric patients using ICRP biokinetic data and Monte Carlo simulations with mass-scaled paediatric voxel phantoms.

Radiat. Prot. Dosim. 174, 121-135 (2017)
Verlagsversion Postprint DOI
Open Access Green
The aim of this work is to use Monte Carlo simulations and VOXEL phantoms to estimate the absorbed dose in paediatric patients (aged from 2 weeks to 16 y), with normal renal function, to whom technetium-99m-dimercaptosuccinic acid ((99m)Tc-DMSA) was administered, for diagnostic renal scintigraphy purposes; and compare them with values obtained using the International Commission on Radiological Protection (ICRP) methodology. In the ICRP methodology, the cumulated absorbed dose in the kidneys is estimated by multiplying the administered activity with the corresponding given dose coefficients. The other methods were based on Monte Carlo simulations performed on two paediatric voxel phantoms ( ITALIC! CHILDand ITALIC! BABY), and another three phantoms, which were modified to suit the mass of the patients' kidneys, and other anatomical factors. Different ITALIC! S-values were estimated using this methodology, which together with solving the ICRP biokinetic model to determine the cumulated activities, allowed for the estimation of absorbed doses different from those obtained with the ICRP method, together with new dose coefficients. The obtained values were then compared. The deviations suggest that the ITALIC! S-values are strongly dependent on the patient's total body weight, which could be in contrast with the ICRP data, which is provided by age, regardless of other anatomical parameters.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Reference Computational Phantoms; Internal Dosimetry; Children; Radiopharmaceuticals; Technetium-99m-dmsa
ISSN (print) / ISBN 0144-8420
e-ISSN 1742-3406
Quellenangaben Band: 174, Heft: 1, Seiten: 121-135 Artikelnummer: , Supplement: ,
Verlag Oxford University Press
Verlagsort Oxford
Begutachtungsstatus Peer reviewed