The continuing increase in the worldwide use of X-ray imaging has implications for radiation protection of medical staff. Much of the increased usage could be viewed as simply a workload issue with no particular new challenges. However, advances in technology and developments in techniques have seen an increase in the number of X-ray procedures in which medical personnel need to maintain close ...

The use of ionizing radiation in cardiovascular imaging has generated considerable discussion. Radiation should not be considered in isolation, but rather in the context of a careful examination of the benefits, risks, and costs of cardiovascular imaging. Such consideration requires an understanding of some fundamental aspects of the biology, physics, epidemiology, and terminology germane to ra...

Many human biology features may be explained by the absence of inverse correlation between T3 and T4 (except in the case of patients with thyroid diseases). The health of Russian cosmonauts may be superior to that of US astronauts because of the use of reserpine for radioprotection in the USA. As long as biologic age is inversely correlated to the α2-macroglobulin/α1-protease inhibitor ratio, s...

Future deep space mission and International Space Station exposures will be dominated by the high-charge and -energy (HZE) ions of the Galactic Cosmic Rays (GCR). A few mammalian systems have been extensively tested over a broad range of ion types and energies. For example, C3H10T1/2 cells, V79 cells, and Harderian gland tumors have been described by various track-structure dependent response m...

Operator radiation exposure is an important occupational hazard compounded over the course of an interventional radiologist's career. This study compared operator radiation dose to the eye and head for different positions around the patient. Compared with cases performed from the femoral region, exposures were 1.8 times higher at the side, and 1.6 times higher at the head, using conventional ap...

the aim of this study was to investigate the radioprotective effect of thymol as a natural product against salivary glands dysfunction induced by ionizing radiation in rats. the rats were treated with thymol at dose of 50 mg/kg before exposure to radiation at dose 15gy. salivary gland function was evaluated with radioisotope scintigraphy and then salivary gland to background counts ratio was ca...

The high demand for more intense neutrino beams is closely related to an increase of the production of radioactive isotopes in target caverns, decay tunnels and hadron stop areas. This paper gives a (short) summary of radiation protection lessons learned from the past CERN neutrino facility WANF and also from presently operating facilities like NuMI or CNGS.

The purpose of this contribution is to situate the radon issue within the whole field of radiation protection. There is among health physicists a fairly general consensus that exposure to radon decay products constitutes the largest and most variable contribution to the population exposure. It is therefore ironical that precisely this exposure is the subject of constant disputes with regard to ...

Risks of serious hereditary damage in the first and second generations after low level radiation exposure and at equilibrium were calculated by using a doubling dose of 100 rem (based on experimental work with the mouse) and by considering separately the various categories of genic and chromosomal defect. Prenatal lethality has not been included. It is estimated that after the exposure of a pop...