Dosimetry Effects Due to the Presence of Fe Nanoparticles for Potential Combination of Hyperthermic Cancer Treatment with MRI-Based Image-Guided Radiotherapy
| Primer Autor |
Valente, Mauro
|
| Co-autores |
Gayol, Amiel
Malano, Francisco
Ribo Montenovo, Clara
Perez, Pedro
|
| Título |
Dosimetry Effects Due to the Presence of Fe Nanoparticles for Potential Combination of Hyperthermic Cancer Treatment with MRI-Based Image-Guided Radiotherapy
|
| Editorial |
MDPI
|
| Revista |
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
|
| Lenguaje |
en
|
| Resumen |
Nanoparticles have proven to be biocompatible and suitable for many biomedical applications. Currently, hyperthermia cancer treatments based on Fe nanoparticle infusion excited by alternating magnetic fields are commonly used. In addition to this, MRI-based image-guided radiotherapy represents, nowadays, one of the most promising accurate radiotherapy modalities. Hence, assessing the feasibility of combining both techniques requires preliminary characterization of the corresponding dosimetry effects. The present work reports on a theoretical and numerical simulation feasibility study aimed at pointing out preliminary dosimetry issues. Spatial dose distributions incorporating magnetic nanoparticles in MRI-based image-guided radiotherapy have been obtained by Monte Carlo simulation approaches accounting for all relevant radiation interaction properties as well as charged particles coupling with strong external magnetic fields, which are representative of typical MRI-LINAC devices. Two main effects have been evidenced: local dose enhancement (up to 60% at local level) within the infused volume, and non-negligible changes in the dose distribution at the interfaces between different tissues, developing to over 70% for low-density anatomical cavities. Moreover, cellular uptakes up to 10% have been modeled by means of considering different Fe nanoparticle concentrations. A theoretical temperature-dependent model for the thermal enhancement ratio (TER) has been used to account for radiosensitization due to hyperthermia. The outcomes demonstrated the reliability of the Monte Carlo approach in accounting for strong magnetic fields and mass distributions from patient-specific anatomy CT scans to assess dose distributions in MRI-based image-guided radiotherapy combined with magnetic nanoparticles, while the hyperthermic radiosensitization provides further and synergic contributions.
|
| Fecha Publicación |
2023
|
| Tipo de Recurso |
artículo original
|
| doi |
10.3390/ijms24010514
|
| Formato Recurso |
PDF
|
| Palabras Claves |
convergent beam radiotherapy
CONVERAY system
Monte Carlo simulation
patient-specific dosimetry
stereotactic radiosurgery
lung cancer
|
| Ubicación del archivo | |
| Categoría OCDE |
Bioquímica y biología molecular
Química
|
| Materias |
radioterapia de haz convergente
sistema CONVERSA
Simulación del Monte Carlo
dosimetría específica del paciente
radiocirugía estereotáxica
cáncer de pulmón
|
| Identificador del recurso (Mandatado-único) |
artículo original
|
| Versión del recurso (Recomendado-único) |
versión publicada
|
| License |
CC BY 4.0
|
| Condición de la licencia (Recomendado-repetible) |
CC BY 4.0
|
| Derechos de acceso |
acceso abierto
|
| Access Rights |
acceso abierto
|
| Id de Web of Science |
WOS:000909010000001
|
| Tipo de ruta |
verde# dorado
|
| Categoría WOS |
Bioquímica y biología molecular
Química
|
cienciaabierta.ufro.cl
ciencia.abierta@ufrontera.cl