使用外推电离微型电离室对90Sr+90Y眼科和皮肤科敷贴器进行校准。

Calibration of the 90Sr+90Y ophthalmic and dermatological applicators with an extrapolation ionization minichamber.

作者信息

Antonio Patrícia L, Oliveira Mércia L, Caldas Linda V E

机构信息

Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, IPEN/CNEN-SP, Av. Prof. Lineu Prestes, 2242, 05508-000 São Paulo, SP, Brazil.

Centro Regional de Ciências Nucleares, Comissão Nacional de Energia Nuclear, CRCN/CNEN, Av. Prof. Luis Freire, 200, 50740-540 Recife, PE, Brazil.

出版信息

Appl Radiat Isot. 2014 Feb;85:11-3. doi: 10.1016/j.apradiso.2013.10.022. Epub 2013 Dec 1.

DOI:10.1016/j.apradiso.2013.10.022

PMID:24362457

Abstract

(90)Sr+(90)Y clinical applicators are used for brachytherapy in Brazilian clinics even though they are not manufactured anymore. Such sources must be calibrated periodically, and one of the calibration methods in use is ionometry with extrapolation ionization chambers. (90)Sr+(90)Y clinical applicators were calibrated using an extrapolation minichamber developed at the Calibration Laboratory at IPEN. The obtained results agree satisfactorily with the data provided in calibration certificates of the sources.

摘要

尽管（90）Sr+（90）Y临床施源器已不再生产，但仍在巴西诊所用于近距离放射治疗。此类源必须定期校准，目前使用的校准方法之一是使用外推电离室的离子测量法。使用在IPEN校准实验室开发的外推微型电离室对（90）Sr+（90）Y临床施源器进行了校准。获得的结果与源校准证书中提供的数据令人满意地一致。