ESTRO 2025 - Abstract Book

S3670

Physics - Quality assurance and auditing

ESTRO 2025

Conclusion: A method to describe a commissioned complexity space in relation to leaf shape modeling has been developed. Less than 2% of the clinical plans might need further evaluation in terms of dose calculation accuracy.

Keywords: Complexity metrics, Patient specific QA

References: 1. Chiavassa S, Bessieres I, Edouard M, Mathot M, Moignier A. Complexity metrics for IMRT and VMAT plans: A review of current literature and applications. Br J Radiol . 2019;92(1102). doi:10.1259/bjr.20190270 2. Yao W, Farr JB. Determining the optimal dosimetric leaf gap setting for rounded leaf-end multileaf collimator systems by simple test fields. J Appl Clin Med Phys . 2015;16(4):65-77. doi:10.1120/jacmp.v16i4.5321 3. Götstedt J, Karlsson Hauer A, Bäck A. Development and evaluation of aperture-based complexity metrics using film and EPID measurements of static MLC openings. Med Phys . 2015;42(7):3911-3921. doi:10.1118/1.4921733

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Digital Poster Clinical relevance of Elekta Agility MLC positional errors in H&N VMAT and Spinal SBRT treatments Pablo López Expósito, Daniel Díaz Martín, Andrea Rodríguez Álvarez, Breixo Carmelo Portas Ferradás, Abel Niebla Piñero Medical Physics and Radiation Protection Department, Hospital Universitario Nuestra Señora de la Candelaria, Santa Cruz de Tenerife, Spain