The use of corticosteroids in septic shock remains controversial. It has been demonstrated that high doses of steroids (30 mg/kg methylprednisolone) for short periods of time are not beneficial. More recent studies using smaller doses (200-300 mg/day hydrocortisone) for longer periods of time have shown beneficial effects. These positive effects have included reversal of shock, trends toward de...

The aim of this study was to evaluate radiation dose in patients undergoing three-dimensional rotation angiography (3DRA) and cone-beam computed tomography (CBCT) using a flat panel detector (FPD). Radiation doses were measured for angiography equipment using small silicon-photodiode dosimeters that were implanted in various positions in tissues and organs within an anthropomorphic phantom of a...

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 ...

The aim of this study was to evaluate and compare organ doses delivered to patients in wrist and petrous bone examinations using a multislice spiral computed tomography (CT) and a C-arm cone-beam CT equipped with a flat-panel detector (XperCT). For this purpose, doses to the target organ, i.e. wrist or petrous bone, together with those to the most radiosensitive nearby organs, i.e. thyroid and ...

New mathematical phantoms based on medical image data are allowing evaluation of internal and external dose calculations using better anatomic realism and inclusion of organs that were not previously defined. In this work, we show preliminary data for new radiation dose estimates for radiopharmaceuticals and CT examinations, using Monte Carlo radiation simulation routines developed in the Geant...

Alcohol Alcohol, a drug, is consumed at some time by up to 80% of the population. At low doses alcohol can have some beneficial effects such as decreased rates of myocardial infarction, stroke, gallstones, and possibly vascular or Alzheimer's dementias, but the consumption of more than two standard drinks per day increases the risk for health problems in many organ systems. Heavy repetitive dri...

OBJECTIVES Fibrosis is involved in many chronic diseases. It affects the functionality of vital organs, such as liver, lung, heart and kidney. Two novel imaging agents for positron emission tomography (PET) imaging of fibrosis have previously pre-clinically demonstrated promising target binding and organ distribution characteristics. However, the relevant disease monitoring in the clinical setu...

This study aimed to calculate and compare the estimated organ absorption dose, risk of cancer due exposure, dose received by gonads for women men in radio diagnostic examinations with different projections. Radiographic examination abdomen (with anterior-posterior (AP) posterior-anterior (PA) projections) lumbar vertebrae projection (AP), Right oblique (RPO), Left (LPO)), were performed. Softwa...

The IMRT planning technique applies the concept of irradiation, which is controlled automatically by a computer. An plan aligned with trial-and-error approach and still involves non-intuitive, iterative steps based on planner’s subjective decision. Neural Network method used in radiotherapy determining plans lung cancer cases. This to predict dose distribution previous data. purpose using this ...

Recently, lay and scientific reports have raised concerns regarding the radiation doses associated with CCTA. These published data remain confusing for the nonphysicist, given the complexity of measuring radiation exposure and estimating risk. Radiation imparted by CT is most easily described by the dose-length product (DLP), a summary measure of the integral of radiation dose and scan length. ...