The aim of this study was to investigate the potential of jaw tracking with the volumetric-modulated arc therapy (VMAT) to reduce the normal tissue dose. Plans of nasopharynx, lung, and prostate cancers (10 plans for each) were used to perform VMAT with and without jaw tracking. The dose reduction was evaluated in terms of organ doses and integral doses. Organ-dose reduction with jaw tracking w...

Diagnostic radiography is a leading cause of man-made radiation exposure to the population. Individual risk assessment and analytic epidemiologic studies likewise require retrospective assessment of lifelong exposure from medical sources. Typical schemes attempt to determine accumulated doses of specific „critical organs“. The organ dose to the red bone marrow is relevant in studies of diseases...

it was assumed that, although there were small discrepancies between the plans and all of the doses were under the critical dosages stated for rectum, bladder and femoral heads for each technique, the doses given to the critical organs were higher with the MLC technique. Regarding the late toxicity and the critical organ doses, each of these shaping methods is suitable for the definitive irradi...

Immunomodulatory activity of aqueous extract of Achillea wilhelmsii (25, 50 and 100 mg/kg body weight for 5 days) was evaluated on body weight, relative organ weight, delayed type of hypersensitivity (DTH) response and haemagglutination titre (HT) in female Swiss albino mice. No significant body weight gain differences were recorded in various groups of animals. Significant increase in relative...

background: various compounds of plant origin have been widely investigated since ancient times for their possible immunomodulatory properties as well as for the treatment of a wide range of diseases. objective: to study the immunomodulatory functions of the aqueous extract of the seeds of abrus precatorius commonly known as indian liquorice (fabaceae), a medicinal plant native to central india...

To determine quantities for radiation protection against high-energy electrons, such as those from LINAC, the organ dose equivalents and equivalent doses for the human body were calculated using EGS-4 Monte Carlo simulation code and an MIRD-5 mathematical human phantom. Conversion factors for the incident fluence to the organ dose equivalent, to the effective dose and to the effective dose equi...

The aim of this study was to investigate the organ doses of patients undergoing computed tomography (CT) examination using the wide bore General Electric (GE) “Light Speed RT” unit. The head, chest and pelvic regions of the Rando-phantom were scanned with 120 kV, 200 mA, and 2.5 mm slice thickness for helical and axial modes. Thermoluminescent Dosimeter (TLD) pairs were used for the dosimetry o...

liver is a major organ of the body which can be exposed to various chemicals, drugs, and many other xenobiotics such as bromobenzene. bromobenzene must be converted to its active metabolites to produce liver and kidney toxicity. livergol is an herbal product which contains silymarin. the objective of this study was to find out the protective effect of livergol against liver toxicity induced by ...