Articles producció científica> Ciències Mèdiques Bàsiques

SimDoseCT: Dose reporting software based on Monte Carlo simulation for a 320 detector-row cone-beam CT scanner and ICRP computational adult phantoms

  • Dades identificatives

    Identificador: PC:2955
    Handle: https://hdl.handle.net/20.500.11797/PC2955
    Autors:
    Maria Cros, Raoul M S Joemai, Jacob Geleijns, Diego Molina, Marçal Salvadó
    Resum:
    This study aims to develop and test software for assessing and reporting doses for standard patients undergoing computed tomography (CT) examinations in a 320 detector-row cone-beam scanner. The software, called SimDoseCT, is based on the Monte Carlo (MC) simulation code, which was developed to calculate organ doses and effective doses in ICRP anthropomorphic adult reference computational phantoms for acquisitions with the Aquilion ONE CT scanner (Toshiba). MC simulation was validated by comparing CTDI measurements within standard CT dose phantoms with results from simulation under the same conditions. SimDoseCT consists of a graphical user interface connected to a MySQL database, which contains the look-up-tables that were generated with MC simulations for volumetric acquisitions at different scan positions along the phantom using any tube voltage, bow tie filter, focal spot and nine different beam widths. Two different methods were developed to estimate organ doses and effective doses from acquisitions using other available beam widths in the scanner. A correction factor was used to estimate doses in helical acquisitions. Hence, the user can select any available protocol in the Aquilion ONE scanner for a standard adult male or female and obtain the dose results through the software interface. Agreement within 9% between CTDI measurements and simulations allowed the validation of the MC program. Additionally, the algorithm for dose reporting in SimDoseCT was validated by comparing dose results from this tool with those obtained from MC simulations for three volumetric acquisitions (head, thorax and abdomen). The comparison was repeated using eight different collimations and also for another collimation in a helical abdomen examination. The results showed differences of

  • Altres:

    Autor segons l'article: Maria Cros, Raoul M S Joemai, Jacob Geleijns, Diego Molina, Marçal Salvadó
    Departament: Ciències Mèdiques Bàsiques
    Autor/s de la URV: SALVADÓ ARTELLS, MARÇAL; CROS, M. ; Joemai, R.M.S.; Geleijns, J.; Molina, D.
    Paraules clau: Monte Carlo simulation dose reporting software CT dosimetry
    Resum: This study aims to develop and test software for assessing and reporting doses for standard patients undergoing computed tomography (CT) examinations in a 320 detector-row cone-beam scanner. The software, called SimDoseCT, is based on the Monte Carlo (MC) simulation code, which was developed to calculate organ doses and effective doses in ICRP anthropomorphic adult reference computational phantoms for acquisitions with the Aquilion ONE CT scanner (Toshiba). MC simulation was validated by comparing CTDI measurements within standard CT dose phantoms with results from simulation under the same conditions. SimDoseCT consists of a graphical user interface connected to a MySQL database, which contains the look-up-tables that were generated with MC simulations for volumetric acquisitions at different scan positions along the phantom using any tube voltage, bow tie filter, focal spot and nine different beam widths. Two different methods were developed to estimate organ doses and effective doses from acquisitions using other available beam widths in the scanner. A correction factor was used to estimate doses in helical acquisitions. Hence, the user can select any available protocol in the Aquilion ONE scanner for a standard adult male or female and obtain the dose results through the software interface. Agreement within 9% between CTDI measurements and simulations allowed the validation of the MC program. Additionally, the algorithm for dose reporting in SimDoseCT was validated by comparing dose results from this tool with those obtained from MC simulations for three volumetric acquisitions (head, thorax and abdomen). The comparison was repeated using eight different collimations and also for another collimation in a helical abdomen examination. The results showed differences of 0.1 mSv or less for absolute dose in most organs and also in the effective dose calculation. The software provides a suitable tool for dose assessment in standard adult patients undergoing CT examinations in a 320 detector-row cone-beam scanner.
    Grup de recerca: Física i Cristal.lografia de Materials
    Àrees temàtiques: Health sciences Ciencias de la salud Ciències de la salut
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0031-9155
    Identificador de l'autor: 0000-0002-9399-6649
    Data d'alta del registre: 2017-11-29
    Pàgina final: 6321
    Volum de revista: 62
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2017
    Pàgina inicial: 6304
    Tipus de publicació: Article Artículo Article

  • Paraules clau:

    Radiació -- Mesures de seguretat -- Programes d'ordinador
    Dosimetria de la radiació
    Protecció radiològica
    Monte Carlo simulation
    dose reporting software
    CT dosimetry
    Health sciences
    Ciencias de la salud
    Ciències de la salut
    0031-9155

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