نتایج جستجو برای: 192ir
تعداد نتایج: 176 فیلتر نتایج به سال:
Brachytherapy treatment planning systems (BTPS) are employing the American Association of Physicists in Medicine (AAPM) Task Group 43 (TG-43)-recommended dosimetric parameters of sources, which are measured in water. The majority of brachytherapy implant volumes are not homogeneous media. Particularly, an implant with multiple seeds significantly changes homogeneity of the implant volume. Heter...
This study used MCNPX code to investigate the brachytherapy (192)Ir dose distributions in water, bone, and lung tissue and performed radiophotoluminescent glass dosimeter measurements to verify the obtained MCNPX results. The results showed that the dose-rate constant, radial dose function, and anisotropy function in water were highly consistent with data in the literature. However, the lung do...
This paper compares the isotopes (60)Co and (192)Ir as radiation sources for high-dose-rate (HDR) afterloading brachytherapy. The smaller size of (192)Ir sources made it the preferred radionuclide for temporary brachytherapy treatments. Recently also (60)Co sources have been made available with identical geometrical dimensions. This paper compares the characteristics of both nuclides in differe...
Chromosome examinations were made both in cultured peripheral lymphocytes and in freshly aspirated bone marrow cells of 6 persons accidentally exposed to gamma rays from an 192Ir. Samplings of peripheral blood for the chromosome analysis were repeated mostly at weekly in tervals during the hospitalization beginning on 10-11 days after the initial exposure, and at more prolonged intervals after ...
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