Implementación de un control de calidad de paciente específico en tratamientos de radioterapia con ArcCheck: Implementation of Patient-Specific Quality Control in Radiotherapy Treatments with ArcCheck

Mirko Salomón Alva Sánchez; Isabela  Linhares; Carolina Maulaz; Bruna  Frohlich; Artur  Scheid; Matheus  Fischer; Telpo  Martins Dias; Daniela  da Rocha Estácio

doi:10.25176/RFMH.v24i4.6793

Authors

Mirko Salomón Alva Sánchez Universidade Federal de Ciências da Saúde de Porto Alegre
Isabela Linhares Bachelor's Course in Medical Physics, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
Carolina Maulaz Department of Radiotherapy, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
Bruna Frohlich Department of Radiotherapy, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
Artur Scheid Department of Radiotherapy, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
Matheus Fischer Department of Radiotherapy, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
Telpo Martins Dias Department of Radiotherapy, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
Daniela da Rocha Estácio Department of Radiotherapy, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil

DOI:

https://doi.org/10.25176/RFMH.v24i4.6793

Keywords:

ArCHECK, Radiotherpy, VMAT, Gamma Index

Abstract

Introduction: Quality control is essential to ensure safety and prevent errors in the administration of ionizing radiation across various radiotherapy techniques. Objective: To evaluate the performance of the ArcCheck detector with the goal of implementing a specific quality control technique for patients treated with dynamic arc therapy. Methods: Fifty patients treated with 6 MV and 10 MV energies on the Clinac® Varian CX were selected. Doses at the isocenter of each treatment plan were analyzed using a PMMA phantom (30 x 30 x 15 cm³) to validate reference values between the treatment planning system and the ionization chamber. The treatment plans were also recreated using the ArcCheck. Results: The mean dose difference at the isocenter was -0.96% and -1.34% for 6 MV and 10 MV, respectively. The average passing rate of the dose distributions in the gamma analysis exceeded 98.0% for both energies. Conclusion: The results demonstrated good concordance with the TG-119 and TG-218 protocols, supporting the use of the detector for quality control in patient-specific treatments.

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