Development of a pregnant woman phantom using polygonal mesh, for dosimetric evaluations
Due to the embryo/fetus radiosensitivity the accurate estimation of the absorbed dose distribution in the abdominal area is an additional problem caused by the exposure of pregnant women to ionizing radiation in medical applications. This paper reports the construction and insertion of a fetal repre...
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Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)
2015-05-01
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| Series: | Brazilian Journal of Radiation Sciences |
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| Online Access: | https://bjrs.org.br/revista/index.php/REVISTA/article/view/127 |
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| author | Manuela Ohana Monteiro Cabral José Wilson Vieira Viriato Leal Neto Fernando Roberto de Andrade Lima |
| author_facet | Manuela Ohana Monteiro Cabral José Wilson Vieira Viriato Leal Neto Fernando Roberto de Andrade Lima |
| author_sort | Manuela Ohana Monteiro Cabral |
| collection | DOAJ |
| description | Due to the embryo/fetus radiosensitivity the accurate estimation of the absorbed dose distribution in the abdominal area is an additional problem caused by the exposure of pregnant women to ionizing radiation in medical applications. This paper reports the construction and insertion of a fetal representation in a female geometry by means of 3D modeling techniques. In order to characterize an ECM the Grupo de Dosimetria Numerica (GDN) is using, mainly, simulators emitting gama sources and voxel phantoms coupled to a MC code. The phantoms are predominantly constructed from stacks of magnetic resonance images (MRI), computed tomography (CT) (obtained from scans of real patients) or from 3D modeling techniques. Due to the difficulty of obtaining medical images of pregnant women, 3D objects in several formats (.obj, .max, .blend, etc.) were acquired for anatomical representation of a non-pregnant adult. To construct a fetal representation, the 3D modeling technique called Poly Modeling (polygon mesh) was used inside of the software Autodesk 3ds Max 2014 (free student version). Information about the radiosensibility of organs included in the abdominal area will be used to fit and use the pregnant phantom in numerical dosimetry. For this, the phantom will be voxelized and the masses of organs of interest will be adjusted according to data provided by International Commission on Radiological Protection (ICRP). Finally, the phantom will be coupled to a MC code creating a MCE that will serve as base for the construction of several other models involving pregnant women submitted to ionizing radiation. |
| format | Article |
| id | doaj-art-5c22a1a7f2a64132bd2aafa9f03910e7 |
| institution | DOAJ |
| issn | 2319-0612 |
| language | English |
| publishDate | 2015-05-01 |
| publisher | Brazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR) |
| record_format | Article |
| series | Brazilian Journal of Radiation Sciences |
| spelling | doaj-art-5c22a1a7f2a64132bd2aafa9f03910e72025-08-20T02:39:41ZengBrazilian Radiation Protection Society (Sociedade Brasileira de Proteção Radiológica, SBPR)Brazilian Journal of Radiation Sciences2319-06122015-05-0131A (Suppl.)10.15392/bjrs.v3i1A.127100Development of a pregnant woman phantom using polygonal mesh, for dosimetric evaluationsManuela Ohana Monteiro Cabral0José Wilson Vieira1Viriato Leal Neto2Fernando Roberto de Andrade Lima31. Universidade Federal de Pernambuco, Departamento de Energia Nuclear1. Escola Politécnica de Pernambuco 2. Instituto Federal de Educação, Ciência e Tecnologia de Pernambuco1. Instituto Federal de Educação, Ciência e Tecnologia de Pernambuco1. Centro Regional de Ciências Nucleares do NordesteDue to the embryo/fetus radiosensitivity the accurate estimation of the absorbed dose distribution in the abdominal area is an additional problem caused by the exposure of pregnant women to ionizing radiation in medical applications. This paper reports the construction and insertion of a fetal representation in a female geometry by means of 3D modeling techniques. In order to characterize an ECM the Grupo de Dosimetria Numerica (GDN) is using, mainly, simulators emitting gama sources and voxel phantoms coupled to a MC code. The phantoms are predominantly constructed from stacks of magnetic resonance images (MRI), computed tomography (CT) (obtained from scans of real patients) or from 3D modeling techniques. Due to the difficulty of obtaining medical images of pregnant women, 3D objects in several formats (.obj, .max, .blend, etc.) were acquired for anatomical representation of a non-pregnant adult. To construct a fetal representation, the 3D modeling technique called Poly Modeling (polygon mesh) was used inside of the software Autodesk 3ds Max 2014 (free student version). Information about the radiosensibility of organs included in the abdominal area will be used to fit and use the pregnant phantom in numerical dosimetry. For this, the phantom will be voxelized and the masses of organs of interest will be adjusted according to data provided by International Commission on Radiological Protection (ICRP). Finally, the phantom will be coupled to a MC code creating a MCE that will serve as base for the construction of several other models involving pregnant women submitted to ionizing radiation.https://bjrs.org.br/revista/index.php/REVISTA/article/view/127exposure computational modelsegsnrcvoxel phamtomsmonte carlo. |
| spellingShingle | Manuela Ohana Monteiro Cabral José Wilson Vieira Viriato Leal Neto Fernando Roberto de Andrade Lima Development of a pregnant woman phantom using polygonal mesh, for dosimetric evaluations Brazilian Journal of Radiation Sciences exposure computational models egsnrc voxel phamtoms monte carlo. |
| title | Development of a pregnant woman phantom using polygonal mesh, for dosimetric evaluations |
| title_full | Development of a pregnant woman phantom using polygonal mesh, for dosimetric evaluations |
| title_fullStr | Development of a pregnant woman phantom using polygonal mesh, for dosimetric evaluations |
| title_full_unstemmed | Development of a pregnant woman phantom using polygonal mesh, for dosimetric evaluations |
| title_short | Development of a pregnant woman phantom using polygonal mesh, for dosimetric evaluations |
| title_sort | development of a pregnant woman phantom using polygonal mesh for dosimetric evaluations |
| topic | exposure computational models egsnrc voxel phamtoms monte carlo. |
| url | https://bjrs.org.br/revista/index.php/REVISTA/article/view/127 |
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