نتایج جستجو برای: luminescent dosimeters
تعداد نتایج: 8751 فیلتر نتایج به سال:
The analysis of the problem of conjunction of information and communication technologies (ICT) with packaging industry and food production was made. The perspective of combining the latest advances of nanotechnology, including nanophotonics, and ICT for creating modern smart packaging was shown. There were investigated luminescent films with zinc oxide nanoparticles, which change luminescence i...
This work reports on the new chemical dosimeters for UV radiation dose measurements coral reefs and in seawater. The proposed can measure actual of radiation, which consists 95% UVA 5% UVB unlike currently-used radiometers marine ocean waters that separately. are composed water, poly(ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide) (Pluronic F-127) as a gel matrix, 2,3,5-t...
Drug metabolism mostly occurs in the liver. Cytochrome P450 (CYP) is a drug-metabolizing enzyme that is responsible for many important drug metabolism reactions. Recently, the US FDA and EU EMA have suggested that CYP enzyme induction can be measured by both enzymatic activity and mRNA expression. However, these experiments are time-consuming and their inter-assay variability can lead to misint...
Proton pencil beam scanning is a dynamic delivery technique with excellent conformability to the tumor volume. The accuracy of spot size and positions will have significant effect on delivered dose distribution. We employed polymer gel dosimeters measure for Shanghai Advanced Therapy facility (SAPT). Polymer (MAGAT-f PAGAT) were utilized full width at half maximum (FWHM) various depths basis th...
OBJECTIVE The practice of regular dose measurement helps to ascertain the level of occupational dose delivered to the staff involved in diagnostic procedures. This study was carried out to evaluate the dose exposed to the hands of radiologists and a radiologic technologist carrying out HSG and radionuclide bone scan examinations in several hospitals in Nigeria. METHODS Radiation doses exposed...
BACKGROUND Despite the firmly established occupational risk of exposure to X-rays, they are used extensively in spine surgeries. Shielding by lead aprons is the most common protective practice. We quantified the level of their radiation blocking ability in a real-life setting. METHODS Single-center, prospective, randomized study of adult patients with degenerative lumbar disorders, scheduled ...
A comprehensive end-to-end test for head and neck IMRT treatments was developed using a custom phantom designed to utilize multiple dosimetry devices. Initial end-to-end test and custom H&N phantom were designed to yield maximum information in anatomical regions significant to H&N plans with respect to: (i) geometric accuracy, (ii) dosimetric accuracy, and (iii) treatment reproducibility. The p...
After breast conserving surgery, early stage breast cancer patients are currently treated with a wide range of radiation techniques including whole breast irradiation (WBI), accelerated partial breast irradiation (APBI) using high-dose rate (HDR) brachytherapy, or 3D-conformal radiotherapy (3D-CRT). This study compares the mean heart's doses for a left breast irradiated with different breast te...
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