Analysis of the long-term stability of the output of electron beams generated by the Novac11™ IORT accelerator.
Rep Pract Oncol Radiother
; 23(5): 341-345, 2018.
Article
em En
| MEDLINE
| ID: mdl-30127674
ABSTRACT
AIM:
The aim of the study was to analyze the long-term stability of electron beams generated by the Novac11™ IORT accelerator.BACKGROUND:
Novac11™ (NRT®) is a mobile electron accelerator designed to irradiate small areas of tissue, up to 10â¯cm in diameter, with electron beams during surgical procedures. It is characterized by a great mobility guaranteed by a number of degrees of freedom enabling irradiation in the conditions of an operating theatre. MATERIALS ANDMETHODS:
Over the period of January 2013 and September 2016, the measurement sessions of the output of clinically used beam qualities (6, 8 and 10â¯MeV) were carried out 41 times. Because of the unsatisfactory long-term stability, an extra procedure of tuning of the magnetron, suggested by the manufacturer, was introduced in October 2015, 15 measurements were performed since then. The output of the Novac11™ accelerator was measured in the reference conditions recommended by the IAEA Report 398, the measurements of the charge in the ionization chamber at the reference depth were carried out with a Dose1™ electrometer and a plane-parallel chamber PPC05™ from IBA®.RESULTS:
The introduction of the tuning of the magnetron procedure resulted in satisfactory long-term stability of the measured outputs below 2%.CONCLUSIONS:
After the introduction of the STV parameter tuning procedure, the long-term stability of the Novac11™ output increased considerably and is within the values declared by the manufacturer.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article