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Vivanco, M.G. Bernui de; Cardenas R, A., E-mail: gisellebdv@hotmail.com
International Radiation Protection Association (IRPA) (France); Sociedad Mexicana de Seguridad Radiologica A.C. (SMSR), Mexico D.F. (Mexico); Sociedad Nuclear Mexicana (SNM), Mexico D.F. (Mexico); Organismo Internacional de Energia Atomica (OIEA), Vienna (Australia); Federacion de Radioproteccion de America Latina y el Caribe (FRALC), Zacatecas (Mexico); Organizacion Panamericana de la Salud (OPS), Washington, D.C. (United States)2006
International Radiation Protection Association (IRPA) (France); Sociedad Mexicana de Seguridad Radiologica A.C. (SMSR), Mexico D.F. (Mexico); Sociedad Nuclear Mexicana (SNM), Mexico D.F. (Mexico); Organismo Internacional de Energia Atomica (OIEA), Vienna (Australia); Federacion de Radioproteccion de America Latina y el Caribe (FRALC), Zacatecas (Mexico); Organizacion Panamericana de la Salud (OPS), Washington, D.C. (United States)2006
AbstractAbstract
[en] The ocular brachytherapy many times unique alternative to conserve the visual organ in patients of ocular cancer, one comes carrying out in the National Institute of Neoplastic Illnesses (INEN) using threads of Iridium 192; those which, they are placed in radial form on the interior surface of a spherical cap of gold of 18 K; the cap remains in the eye until reaching the prescribed dose by the doctor. The main objective of this work is to be able to calculate in a correct and practical way the one time that the treatment of ocular brachytherapy should last to reach the dose prescribed by the doctor. To reach this objective I use the Sievert integral corrected by attenuation effects and scattering (Meisberg polynomials); calculating it by the Simpson method. In the calculations by means of the Sievert integral doesn't take into account the scattering produced by the gold cap neither the variation of the constant of frequency of exposure with the distance. The calculations by means of Sievert integral are compared with those obtained using the Monte Carlo Penelope simulation code, where it is observed that they agree at distances of the surface of the cap greater or equal to 2mm. (Author)
Original Title
Calculo de dosis en braquiterapia ocular con hilos de Ir-192 utilizando la integral de Sievert y cooregida por atenuacion y dispersion con los polinomios de Meisberg
Primary Subject
Source
2006; 7 p; 1. american congress of the IRPA; Retos y tendencias para el continente americano respecto a la proteccion radiologica, la seguridad nuclear y el ambiente; Acapulco, Gro. (Mexico); 3-8 Sep 2006; 7. regional congress of radiological and nuclear safety; Retos y tendencias para el continente americano respecto a la proteccion radiologica, la seguridad nuclear y el ambiente; Acapulco, Gro. (Mexico); 3-8 Sep 2006; 24. annual meeting of the SMSR; Retos y tendencias para el continente americano respecto a la proteccion radiologica, la seguridad nuclear y el ambiente; Acapulco, Gro. (Mexico); 3-8 Sep 2006; 17. annual congress of the SNM; Retos y tendencias para el continente americano respecto a la proteccion radiologica, la seguridad nuclear y el ambiente; Acapulco, Gro. (Mexico); 3-8 Sep 2006
Record Type
Miscellaneous
Literature Type
Conference
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Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BODY, CALCULATION METHODS, COMPUTER CODES, DAYS LIVING RADIOISOTOPES, DISEASES, DOSES, ELECTRON CAPTURE RADIOISOTOPES, FACE, FUNCTIONS, HEAD, HEAVY NUCLEI, INFORMATION, INTERNAL CONVERSION RADIOISOTOPES, IRIDIUM ISOTOPES, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, MATHEMATICS, MEDICINE, MINUTES LIVING RADIOISOTOPES, NUCLEAR MEDICINE, NUCLEI, ODD-ODD NUCLEI, ORGANS, RADIOISOTOPES, RADIOLOGY, RADIOTHERAPY, SENSE ORGANS, THERAPY, YEARS LIVING RADIOISOTOPES
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