Precautions while using X Rays
X-rays are forms of radiant energy,medical procedures, x-rays are safe when used with care.
1. X ray
It is a test used to look at the bones and internal organs of the body. It is done by exposing the body to a brief amount of electromagneticradiation and then producing an image over the film. X rays used for medical purposes are about one order of magnitude shorter in wavelength. Diagnostic rays are designated for tissue penetration and are carefully filtered to avoid X ray damage to the skin caused by the longer, more readily absorbed wavelengths.
2. Definition
Analytical x ray equipment means any device or combination of devices utilizing x rays to determine the microscopic structure or composition of material, including but not limited to, x ray diffraction, x ray spectroscopy, x ray fluorescence or fluorescence x ray spectroscopy equipment. Electron microscopes are not regarded as analytical x ray equipment.
3. Safety Precautions, Shielding
The normal shielding, safety equipment and safety procedures are applicable for up to 75 kV peak X rays. Additional precautions are necessary for instruments operating at higher voltages. Prior to removal of shielding or before beginning work in the sample area, the operator must check both the warning lights and current meter on the console. The best way to avoid an accidental exposure is to turn the machine off before working in the sample area. Never put any part of the body in the primary beam. Exposure of any part of the body to the collimated beam for even a fraction of a second may result in damage to the exposed tissue.
4. Eye Protection
The use of safety glasses is encouraged when working with analytical X rays. While glasses cannot provide complete protection to the eyes, they can reduce X ray exposure. Glass provides about 10 times the protection of plastic. Neither one will adequately protect the eye from direct exposure to the primary beam.
5. Nature of Analytical X rays
Analytical X ray instruments produce intense beams of ionizing radiation that is used for diffraction and fluorescent studies. At U of T, there are also numerous X ray producing machines for medical and/or dental applications. The chest X ray procedure often involves a view from the back to the front of the body (PA view) as well as a side view (lateral view). Other X rays are taken from front to back of the body (AP view). Occasionally, different angles are considered to interpret certain specific areas.

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