نتایج جستجو برای: radiation dosage
تعداد نتایج: 339057 فیلتر نتایج به سال:
PURPOSE The number of radiological exams performed on children increases each year. We assessed the current understanding of radiation doses and risks among a sample group of pediatricians and evaluated whether the latest efforts to improve radiation awareness affected the results. MATERIALS AND METHODS A multiple-choice survey comprising 16 questions was answered by 237 pediatricians in 10 h...
Undesirable exposure of diaphragm to radiation during thoracic radiation therapy has not been fully considered over the past decades. Our study aims to examine the potential biological effects on diaphragm induced by radiation. One-time ionizing irradiation of 10 Gy was applied either to the diaphragmatic region of mice or to the cultured C2C12 myocytes. Each sample was then assayed for muscle ...
high-dose extended-interval dosage (hded) regimen of aminoglycosides is now considered as the standard dosage strategy in sepsis. although safety and efficacy of this dosing regimen is well studied, but new experiments show increased the risk of resistance development associated with %t>mic less than 60% of the dosing interval following extended interval dosing. moreover, limited information is...
Human exposure to ionising radiation disrupts normal metabolic processes in cells and organs by inducing complex biological responses that interfere with gene and protein expression. Conventional dosimetry, monitoring of prodromal symptoms and peripheral lymphocyte counts are of limited value as organand tissue-specific biomarkers for personnel exposed to radiation, particularly, weeks or month...
Introduction: Previously we have published data showing how clinician awareness surrounding radiation doses from common diagnostic modalities is poor. Evidence suggests that radiation exposure, from diagnostic and interventional procedures is placing patients at a small but significant increased risk of malignancy. As the usage of radiation in endourological surgery increases, urologists need t...
A simple stability-indicating RP-HPLC method has been developed and validated for the determination of Racecadotril (RAC) in pharmaceutical dosage forms. The mobile phase consisting of methanol and tetra butyl ammonium hydrogen sulphate (80: 20, v/v) was used using isocratic elution with UV detection at 230 nm. The method showed good linearity for RAC in the 5-120 μg/mL range being the square o...
Laser is one of the sources that induce a biological effect in higher plants. The positive effect of laser on some crops has been proved. This research was carried out to study the effect of laser radiation on the accumulation of proline in spring wheat (Triticum aestivum cv. Kavir) under different NaCl treatment levels. Semi-coherent red beam, infrared beam and one-second harmonics of Neodymiu...
Peptide receptor radionuclide therapy is used to treat solid tumors by locally delivering radiation. However, due nephro- and hepato-toxicity, it limited its dosage. To amplify radiation damage tumor cells, radiolabeled nanogels can be used. We show that tuning the mechanical properties of significant enhancement in circulation half-life gel could achieved. demonstrate why how small changes inf...
Down syndrome (DS) is caused by trisomy of chromosome 21 (Hsa21) and presents a complex phenotype that arises from abnormal dosage of genes on this chromosome. However, the individual dosage-sensitive genes underlying each phenotype remain largely unknown. To help dissect genotype--phenotype correlations in this complex syndrome, the first fully transchromosomic mouse model, the Tc1 mouse, whic...
AIMS AND BACKGROUND Hyperthermia, the heating of tumors to 41.5-43 degrees C, could be today considered the fourth pillar of the treatment of cancer. Employed for 20 years in Europe, the U.S.A. and Asia, hyperthermia, used in addition to radiotherapy, chemotherapy and surgery, increases both local control and overall survival, restores the chance of the surgery for inoperable tumors and allows ...
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