Dose rates from cylindrical 32P and 90Y beta sources used in intravascular brachytherapy

Eduardo de Paiva

Dose rates from cylindrical 32P and 90Y beta sources used in intravascular brachytherapy

Authors

Eduardo de Paiva Instituto de Radioproteção e Dosimetria - IRD/CNEN/MCTI

Keywords:

Brachytherapy, Beta particles, 32P, 90Y.

Abstract

Beta-particle sources can be used in radiotherapy to treat several diseases. In particular cylindrical (seed) beta-minus sources have been used in cardiology for the prevention of restenosis of coronary artery. Two radioisotopes suitable to be used in intravascular brachytherapy treatment of arteries are the pure beta-emitters ³²P and ⁹⁰Y. In this work a routine calculation to estimate absorbed dose rate distributions around cylindrical sources containing the beta emitters ³²P and ⁹⁰Y has been developed in order to handle with various configurations of radii, lengths and distances in a faster and simple way. The results of relative dose rates are compared with published dose distributions for ³²P and ⁹⁰Sr/⁹⁰Y sources using the Monte Carlo method and a good agreement (differences < 6 %) has been found in the region of clinical interest measured from the cylindrical source center.

Author Biography

Eduardo de Paiva, Instituto de Radioproteção e Dosimetria - IRD/CNEN/MCTI

Divisão de Física Médica e Radioterapia.

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Published

2014-09-28

How to Cite

de Paiva, E. (2014). Dose rates from cylindrical 32P and 90Y beta sources used in intravascular brachytherapy. Scientia Plena, 10(9). Retrieved from https://scientiaplena.org.br/sp/article/view/1915

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Issue

Vol. 10 No. 9 (2014): September/Setembro 2014

Section

Articles

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