Modelo de ajuste del perfil de dosis de un TC sobre un maniquí estandar de cabeza de PMMA

Francisco Rafael  Lozano Martínez; Luis Carlos Martínez Gomez

doi:10.37004/sefm/2023.24.1.004

Authors

Francisco Rafael Lozano Martínez https://orcid.org/0000-0003-0165-1772
Luis Carlos Martínez Gomez https://orcid.org/0000-0002-0796-721X

DOI:

https://doi.org/10.37004/sefm/2023.24.1.004

Keywords:

TC, model, dose profile

Abstract

Purpose: This work present a model for the dose profile deposited in a standard phantom of 16 cm of diameter and 15 cm of length (manufactured with "polymethyl methacrylate" - PMMA) in a CT or computed tomography.

Method: The model proposed is based on error and gaussian functions, where the most of parameters used has a simple physics justification. The data used for the development of this model have been obtained with a solid state probe.

Results and discussion: A good approach has been found to the experimental data with the proposed model, besides being of great versatility since a great variety of experimental measures have been used, with different equipment and acquisition parameters.

Conclusions: Our model adjust very well the deposition profiles of doses on a head phantom in its central axis. It can be considered as a basis for carrying out experimental corrections, dosimetric determinations and other considerations that require a theoretical dose profile model.

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