Estudio dosimétrico en Arcoterapia Volumétrica Modulada (VMAT) para pacientes diagnosticados con CPCNP y su comparación con la Radioterapia Conformada 3D (RTC-3D) y la Radioterapia con Intensidad Modulada (IMRT)

Irvin Reinel Parra; Jesús Dávila Pérez; Lila Carrizales Silva

doi:10.29384/rbfm.2023.v17.19849001664

Authors

Irvin Reinel Parra Instituto Venezolano de Investigaciones Científicas https://orcid.org/0000-0003-1279-2466
Jesús Dávila Pérez Servicio de Radioterapia La Trinidad CA https://orcid.org/0000-0002-6622-4520
Lila Carrizales Silva Instituto Venezolano de Investigaciones Científicas

DOI:

https://doi.org/10.29384/rbfm.2023.v17.19849001664

Keywords:

NSCLC, CENTRAL LUNG CANCER, 3DCRT, IMRT, VMAT, CI, HI

Abstract

This dosimetric study is based on the VMAT treatment technique in patients diagnosed with Non-Small Cell Lung Cancer (NSCLC) of the central and peripheral lung area. 25 Computed Tomography (CT) scans of adult patients between 35 and 83 years old were used, who previously received external beam radiotherapy (EBT) at Centro Médico Docente La Trinidad (CMDLT). The patients were simulated in the supine position with their arms above their heads. The delimitation of the Planned Tumor Volume (PTV) and the Organs at Risk (OAR) was performed in each patient, a treatment plan was also designed with 3D-CRT using APPA fields + 2 oblique and opposing fields, a plan with IMRT- SW using 7 fields and a VMAT plan with 2 complete arches, then the dosimetric evaluation of the structures involved was performed, a statistical analysis was applied between the implemented techniques and a dosimetric verification was carried out as well as an intercomparison with other articles, finding the most suitable treatment technique for NSCLC placed in the central lung area.

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