Title: Development of a ceramic compound for coating the walls of image diagnosis centres for dose reduction of the medical team

Authors: Audrew Frimaio, Paulo Roberto Costa, Flavia V.F. Vanderlinde, Leticia L. Campos

Addresses: Instituto de Pesquisas Energeticas e Nucleares, National Commission of Nuclear Energy, Av. Prof. Lineu Prestes 2242, 05508-000 Sao Paulo SP, Brazil. ' Instituto de Eletrotecnica e Energia, University of Sao Paulo, Av. Prof. Luciano Gualberto 1289, 05508-010 Sao Paulo SP, Brazil. ' Nucleo de Ceramica, SENAI School 'Mario Amato', Sao Paulo SP, Brazil. ' Instituto de Pesquisas Energeticas e Nucleares, National Commission of Nuclear Energy, Av. Prof. Lineu Prestes 2242, 05508-000 Sao Paulo SP, Brazil

Abstract: This study aims to formulate a ceramic compound for coating walls to be used as protecting barriers at image diagnostic centres, with the purpose of reducing the radiation doses to which professionals and the public are exposed. The attenuation properties towards ionising radiation of different commercial ceramic materials and formulations were experimentally studied using X-rays with effective energies between 20 and 55 keV and theoretically using Archer|s model for the calculation of protective barriers. Those samples that presented larger densities and attenuation coefficients were selected, considering the production process facility and low cost. The samples based on the ceramic support grês were chosen, owing to their attenuation properties and wide application as a coating material. Different grês formulations were simulated and evaluated applying the software XCom and TBC model for X-ray spectra generation and the results were compared with reference material containing 4 mm of lead.

Keywords: ceramic coating; ceramic shielding; image diagnosis; radiation protection; radiation attenuation; X-rays; ionising radiation; low radiation; ceramics; medical teams; radiation exposure; dose reduction; simulation; healthcare.

DOI: 10.1504/IJLR.2006.012026

International Journal of Low Radiation, 2006 Vol.3 No.4, pp.355 - 363

Published online: 09 Jan 2007 *

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