نتایج جستجو برای: i 125 source
تعداد نتایج: 1447563 فیلتر نتایج به سال:
PURPOSE To compare the implant quality and clinical outcomes for patients treated with low and intermediate strength (125)I seeds in prostate brachytherapy implants. METHODS AND MATERIALS This retrospective review included 390 consecutive patients treated with prostate brachytherapy from 1999 to 2006. The first 142 patients were implanted with source strengths lower than 0.415U (0.327mCi), wi...
Iodine-125 ((125)I) and Caesium-131 ((131)Cs) brachytherapy have been used with sublobar resection to treat stage I non-small cell lung cancer and other radionuclides, (169)Yb and (103)Pd, are considered for these treatments. This work investigates the dosimetry of permanent implant lung brachytherapy for a range of source energies and various implant sites in the lung. Monte Carlo calculated d...
PURPOSE To investigate the feasibility of and challenges yet to be addressed to measure dose from low energy (effective energy <50 keV) brachytherapy sources (Pd-103, Cs-131, and I-125) using polyurethane based 3D dosimeters with optical CT. METHODS The authors' evaluation used the following sources: models 200 (Pd-103), CS-1 Rev2 (Cs-131), and 6711 (I-125). The authors used the Monte Carlo r...
PURPOSE To investigate the dosimetric characteristics of the new GMS BT-125-1 125 I radioactive seed, including dose rate constant, radial dose functions, and anisotropy functions. METHODS Dosimetric parameters of GMS BT-125-1 125 I seed including dose rate constant, radial dose functions, and anisotropy functions were calculated using the Monte Carlo code of MCNP5, and measured with thermolu...
زمینه و هدف: تعیین دقیق توزیع دوز در اطراف چشمه های مورد استفاده در براکی ترابی بخصوص چشمههای کم انرژی به منظور انجام طراحی درمان دقیق بسیار حائز اهمیت است. در این مطالعه پارامترهای دزیمتری چشمه I-125 مدل 6711 با روش شبیه سازی مونت کارلو محاسبه می شود. روش بررسی: با استفاده از کد شبیه سازی MCNPX (2.6.0) فانتوم همگن آبی به ابعاد30 cm3 شبیهسازی شد....
The formation of tissue iodoproteins during the peripheral metabolism of the thyroid hormones was examined by determining the concentration of nonethanol-extractable (125)I (NE(125)I) in various tissues after the intravenous injection of 3,5,3'-triiodo-L-thyronine (T3-(125)I) and L-thyroxine-(125)I (T4-(125)I) in groups of rats with iodide-blocked thyroid glands. 3 days after T3-(125)I and 7 da...
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