Dose Distribution of 123I in the Thyroid Gland and its Maximum Permissible Concentrations

G. Pedroli; L. Conte; R. Silvani

doi:10.1055/s-0038-1624974

Nuklearmedizin - NuclearMedicine, Table of Contents

Nuklearmedizin 1976; 15(06): 262-267
DOI: 10.1055/s-0038-1624974

Originalarbeiten — Original Articles

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Dose Distribution of ¹²³I in the Thyroid Gland and its Maximum Permissible Concentrations

G. Pedroli

¹From: Servizio di Fisica Sanitaria dell’ Ospedale di Circolo di Varese. Centro Universitario di Ricerca e Applicazione di Medicina Nucleare, Sezione dell’ Istituto di Scienze Radiologiche dell’ Università degli Studi di Milano (Director: Prof. A. Perussia)

,

L. Conte

¹From: Servizio di Fisica Sanitaria dell’ Ospedale di Circolo di Varese. Centro Universitario di Ricerca e Applicazione di Medicina Nucleare, Sezione dell’ Istituto di Scienze Radiologiche dell’ Università degli Studi di Milano (Director: Prof. A. Perussia)

,

R. Silvani

¹From: Servizio di Fisica Sanitaria dell’ Ospedale di Circolo di Varese. Centro Universitario di Ricerca e Applicazione di Medicina Nucleare, Sezione dell’ Istituto di Scienze Radiologiche dell’ Università degli Studi di Milano (Director: Prof. A. Perussia)

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Abstract

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Summary

The calculation of the dose distribution in the thyroid tissues and of the maximum permissible concentrations in the air and in drinking water was carried out for ¹²³I. In fact because of the recent use of this radionuclide in radioisotopic diagnostics the dose to both the patients’ and operators’ thyroids due to ¹²³I must to be known.

In order to obtain a correct estimate it is necessary, however, to consider the distribution of the radionuclide in the thyroid tissue and the changes in this distribution depending on the dimensions of the follicles. Taking into account the dose at the follicular cell-colloid interface, the maximum permissible concentrations in the air and in drinking water were calculated as being 6 x 10^–8 μCi/cm³ and 4 x 10^–4 μCi/cm³ respectively.

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References

References
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