نتایج جستجو برای: organ doses
تعداد نتایج: 206566 فیلتر نتایج به سال:
Background: In this survey the absorbed dose by kidneys, bladder, liver and ovaries with 99mTc-EC (99mTc Ethylene dicysteine) renal scintigraphy was measured and compared with the absorbed dose from 99mTc-DTPA (99mTc - Dietheylne Triamine Penta-Acid), which often is used in renal scintigraphy.Methods: In this applicable study, we used a water phantom with geometrical sizes similar to that o...
Introduction: The study aimed to assess absorbed and effective doses in organs through computed tomography (CT) examinations using automatic exposure control (AEC) and fixed tube current (FTC) techniques. Material and Methods: Scanning parameters were obtained for routine adult CT examinations and used to estimate the organ absorbed and effec...
Introduction Dose calculation of tumor and surrounding tissues is essential during prostate brachytherapy. Three radioisotopes, namely, 125I, 103Pd, and 131Cs, are extensively used in this method. In this study, we aimed to calculate the received doses by the prostate and critical organs using the aforementioned radioactive seeds and to investigate the effect of scattering contribution for the ...
Cardiopulmonary late toxicity is of concern in concurrent chemoradiotherapy (CCRT) for esophageal cancer. The aim of this study was to examine the benefit of proton beam therapy (PBT) using clinical data and adaptive dose-volume histogram (DVH) analysis. The subjects were 44 patients with esophageal cancer who underwent definitive CCRT using X-rays (n = 19) or protons (n = 25). Experimental rec...
There is not one methodology to assess doses to people living in the vicinity of nuclear installations. The methodology used depends on the aim regulatory, knowledge oriented, comparison with an observed radiological impact – of the study. Doses to critical groups (i.e. reference groups) around nuclear sites are calculated to check the compliance with the limit of dose to the public. Doses arou...
BACKGROUND In recent years the widespread use of medical procedures increased the cumulative effective doses of ionizing radiation. Although many haemodialysis patients undergo multiple examinations with high radiation exposure, no data are available characterizing their attendant potential risks of cancer. METHODS The radiation exposures were obtained from a retrospective study of 159 consec...
Effects of Human Model Configuration in Monte Carlo Calculations on Organ Doses from CT Examinations
Only physicians experienced in management of systemic immunosuppressive therapy for the indicated disease should prescribe Cyclosporine Capsules USP (Modified). At doses used in solid organ transplantation, only physicians experienced in immunosuppressive therapy and management of organ transplant recipients should prescribe Cyclosporine Capsules USP (Modified). Patients receiving the drug shou...
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