Acoustic Bragg Peak Localization in Proton Therapy Treatment: Simulation Studies

  1. Otero, Jorge 2
  2. Felis, Ivan 1
  3. Ardid, Miguel 2
  4. Herrero, Alicia 2
  5. Merchán, José A. 3
  1. 1 Centro Tecnológico Naval y del Mar
  2. 2 Universidad Politécnica de Valencia
    info

    Universidad Politécnica de Valencia

    Valencia, España

    ROR https://ror.org/01460j859

  3. 3 Universidad Pedagógica y Tecnológica de Colombia
    info

    Universidad Pedagógica y Tecnológica de Colombia

    Tunja, Colombia

    ROR https://ror.org/04vdmbk59

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Actas:
6th International Electronic Conference on Sensors and Applications

Año de publicación: 2019

Tipo: Aportación congreso

DOI: 10.3390/ECSA-6-06533 GOOGLE SCHOLAR lock_openAcceso abierto editor

Resumen

A full chain simulation of the acoustic hadron therapy monitoring for brain tumors is presented in this work. For the study, a proton beam of 100 MeV was considered. In the first stage, Geant4 was used to simulate the energy deposition and to study the behavior of the Bragg peak. The energy deposition in the medium produced local heating that can be considered instantaneous with respect to the hydrodynamic time scale producing a sound pressure wave. The resulting thermoacoustic signal was subsequently obtained by solving the thermoacoustic equation. The acoustic propagation was simulated by the Finite Element Method (FEM) in the brain and the skull, where a set of piezoelectric sensors were placed. Lastly, the final received signals in the sensors were processed in order to reconstruct the position of the thermal source and, thus, to determine the feasibility and accuracy of acoustic beam monitoring in hadron therapy.