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Similar to all exposure to ionising radiation high exposures can cause direct acute effects through immediate damage to cells. Low levels of exposure carry a stochastic health risk where the probability of cancer induction increases with increased exposure.
Are low energy X-rays dangerous?
Low Energy & Portable Hand Held X-Rays These latter types of machines can lead to some of the most potentially dangerous exposures because rather than pass through the body and associated soft tissue these lower energy rays are absorbed in the skin leading to high skin doses and associated skin damage.
Why is it important to remove low energy X-rays?
Low energy x-rays (less than 30 keV) contribute little to the resultant image as they are heavily absorbed by the patient's soft tissues (particularly the skin). Additionally, this absorption adds to the risk of stochastic (e.g. cancer) or non stochastic radiation effects (e.g. tissue reactions) in the patient.
What is low energy X-ray?
The low energy X-ray calibration service is intended for thin-window plane-parallel chambers required for the dosimetry of superficial X-ray beams (typically less than 70 kVp). Farmer-type chambers can also be calibrated.
Why are X-rays considered dangerous?
When X-ray radiation is absorbed within our bodies, it can damage molecular structures and potentially cause harm. Very high doses of radiation cause damage to human cells, as evidenced by skin burns, loss of hair, and increased incidence of cancer.
What is leakage radiation?
Thus leakage radiation can be defined as ionising radiation transmitted through the protective shielding of a radiation source other than the primary beam.
What is the purpose of the collimator?
In radiology, a collimator is an arrangement of absorbers for limiting a beam of X-rays, gamma rays, or nuclear particles to the dimensions and angular spread required for the specific application.
What is a primary radiation?
Primary Radiation Primary Beam: This refers to the x-ray beam prior to any interaction with the patient, grid, table or image intensifier. Exit Beam: The beam that interacts with the detector is termed the exit beam and will have been significantly attenuated.
What is focusing Cup in xray?
A focusing cup is a negatively charged, shallow depression on the surface of the cathode of an x-ray tube, which concentrates the electron beam towards the focal spot of the anode. It is typically composed of nickel. The negative charge of the focusing cup helps to accelerate the electrons towards the anode.
How can you get radiation?
Most of it forms naturally from minerals. These radioactive minerals are in the ground, soil, water, and even our bodies. Background radiation can also come from outer space and the sun. Other sources are man-made, such as x-rays, radiation therapy to treat cancer, and electrical power lines.
