A multi-centre analytical study of small field output factor calculations in radiotherapy

An audit methodology was developed and applied for output factor (OF) calculations in radiotherapy. The auditees were asked to calculate OFs for field sizes from 10 × 10 cm(2) to 2 × 2 cm(2). Sixty five beams were audited; missing reference OFs were interpolated. The calculated OFs were in 73% of ca...

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Detalles Bibliográficos
Autores principales: Chełmiński, Krzysztof, Bulski, Wojciech
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2018
Materias:
Short Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7807585/
https://www.ncbi.nlm.nih.gov/pubmed/33458380
http://dx.doi.org/10.1016/j.phro.2018.03.001
Descripción
Sumario:An audit methodology was developed and applied for output factor (OF) calculations in radiotherapy. The auditees were asked to calculate OFs for field sizes from 10 × 10 cm(2) to 2 × 2 cm(2). Sixty five beams were audited; missing reference OFs were interpolated. The calculated OFs were in 73% of cases higher than the reference data. The smaller the field size, the higher the overestimations which were observed in the higher fraction of cases. Treatment planning systems generally overestimated OFs for small fields. The reference dataset helped radiotherapy centres to identify discrepancies which were higher than typical.

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