PURPOSE:To lead light from a sunlight radiation light source part effectively to sharp-ended protruding parts, and make it possible to radiate light effectively on the skin of a head without being hindered by hair by providing a light reflecting layer or a clad layer on the outer ...
Radiation therapy, also known as radiotherapy, uses high-energy X-rays or other forms of radiation to destroy cancer cells and shrink tumors. It is a crucial component of cancer treatment plans and has proven to be effective in improving patient outcomes. However, despite its usefulness, ...
For example, in 1987, scavengers found a radiation source used for radiation therapy in an abandoned hospital in Goiânia, Brazil. Finding the glowing blue caesium inside decorative, the scavengers sold it, exposing dozens of people to gamma radiation. Four people eventually died of radiation ...
Besides sunlight, UV sources include black lights and welding tools. Lastly, lasers emit IR, visible and UV radiation. They can be quite dangerous to the eyes and skin. People who work with lasers should wear protective gear on the eyes, hands and arms. Keep reading to learn about high-...
Privacy & Other Trust Info Advertising Policy Medical Editor:Melissa Conrad Stöppler, MD homemedical dictionary Radiation therapy:The use of high-energy rays to damage cancer cells, stopping them from growing and dividing. Like surgery,radiation therapyis alocal treatmentthat affects cancer cells on...
diseases. Since then, however, radiation therapy has been confined nearly exclusively to cancer treatment. Two factors contributed to the phasing out of radiotherapy for non-oncological purposes: the growing awareness of radiation carcinogenesis and the development of efficient drugs (primarily, ...
heliotherapy, insolation - therapeutic exposure to sunlight hormone replacement therapy, hormone-replacement therapy, HRT - hormones (estrogen and progestin) are given to postmenopausal women; believed to protect them from heart disease and osteoporosis immunotherapy - therapy designed to produce immunity ...
Radioactive decay has many uses, including radiation therapy, radiocarbon dating, and so on. Radiative Heat Transfer Heat energy can be transferred from one location to another via electromagnetic radiation. This is how heat reaches the Earth through the vacuum of space from the Sun. ...
A therapy for skin conditions, including psoriasis, eczema and vitiligo, that is composed of a plant-derived ultraviolet (UV)-sensitizer compound (psoralen), combined with UVA radiation (long wavelength radiation). Impetigo A common and highly contagious skin infection that mainly affects infants and...
a Polish physicist working at the University of Jena in Germany discovered a form of light beyond the violet end of the spectrum that he called “Chemical Rays” and which later became known as “Ultraviolet” light[1]. In 1845, Bonnet[2]first reported that sunlight could be used to treat...