Disminución de dosis efectivas en pacientes mediante el rediseño de protocolos de operación en tomografía computada
The purpose of the presente work is to determine the dose usually used in Computed Tomography and to modify radiological parameters to optimize each protocol depending on the given dose. To determine the dose, a pencil-ionization chamber, a PTW dosemeter, a PMMA head phantom and abdominal pha...
Guardado en:
| Autores principales: | , , , , , |
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| Formato: | Working Paper |
| Lenguaje: | Español |
| Publicado: |
Universidad de Belgrano - Facultad de Ingeniería y Tecnología Informática - Proyectos de Investigación
2014
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| Materias: | |
| Acceso en línea: | http://repositorio.ub.edu.ar/handle/123456789/2960 |
| Aporte de: |
| Sumario: | The purpose of the presente work is to determine the dose usually used in Computed Tomography
and to modify radiological parameters to optimize each protocol depending on the given dose. To
determine the dose, a pencil-ionization chamber, a PTW dosemeter, a PMMA head phantom and
abdominal phantom, and a water phantom were used for measurements. The CT scanner used
was General Electric Hi Speed – Helical 120kV. Withthese instruments the usually given doses
and the noise for each of the studies were measured, and it has been worked along with the group
of technicians and physicians of the institution inorder to reduce the dosage of each protocol used,
keeping high diagnostic quality images.
Although the protocols used by the institution prior to this study did not impart large doses to pa-tients, values of CTDI
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in all protocols could be reduced by 27% on average and no diagnostic
quality was lost or problems to the group of physicians working in this institution were caused in
any of the cases due to the slight increase in noise level. |
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