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Radiotherapy is the use of high-energy penetrating radiation(x rays, gamma rays, proton rays, and neutron rays) to kill cancer cells.The primary purpose of radiotherapy is to eliminate or shrink localized cancers. It is also sometimes used to trea...
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Electromagnetic waves of extremely short wavelength(X-rays and gamma rays) and accelerated atomic particles(such as electrons, protons, neutrons, and alpha particles) deposit enough localized energy in an absorbing medium to dislodge electrons fro...
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Ultraviolet radiation(UVR) comprises a spectrum of electromagnetic waves of different wavelengths, subdivided for convenience into three bands, which are measured in nanometers(nm):(1) UVA("black light"), 315 to 400 nm;(2) UVB, 280 to 315 nm; and(...
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Radiation and radioisotopes are extensively used medications to allow physicians to image internal structures and processes in vivo(in the living body) with a minimum of invasion to the patient. Higher doses of radiation are also used as means to ...
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Nonionizing radiation, in contrast to ionizing radiation, is electromagnetic radiation that does not have sufficient energy to remove electrons from an atom or molecules to form an ion(or charged particle) during a collision. Instead, it imparts e...
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What kind of radiation causes thyroid cancer? What about microwave ovens and dental x-rays?
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My father had a pacemaker implanted five years ago. He wants to purchase a new 5.8 GHz cordless phone. I have heard the cellular phones have had some interference with pacemakers; is this also true of digital cordless phones at this frequency?
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Can a breast that has undergone radiation treatment for cancer be biopsied in the future, if necessary?
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According to recent reports, the radiation used during a heart stress test can set off security alarms used in buildings and airports.
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Radiation is a way of treating cancer. Radiation uses beams of energy to destroy cancer cells. With each dose, the tumor gets smaller. The cancer cells die and healthy cells take their place. Radiation may be used alone or with chemotherapy, and may be done before or after surgery.
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Can radiation treatments for prostate cancer damage the bladder, causing it to bleed 10 years after the radiation?
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Intracranial pressure monitoring is a device, placed inside the head, which senses the pressure inside the brain cavity and sends its measurements to a recording device.There are three ways to monitor pressure in the brain cavity(intracranial pres...
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Malnutrition is the condition that occurs when your body does not get enough nutrients.There are a number of causes of malnutrition. It may result from:.Inadequate or unbalanced diet Problems with digestion or absorption Certain medical conditions...
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Nutritional deficiencies occur when a person''s nutrient intake consistently falls below the recommended requirement. Nutritional deficiencies can lead.
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The only way to eat sensibly for life is to make sure you don't feel deprived of your favorite goodies, she says.
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Malnutrition is a condition that develops when the body does not get the proper amount of protein, energy(calories), vitamins, and other nutrients it needs to maintain healthy tissues and organ function.Poor eating habits or lack of available food...
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Malnutrition is the condition that develops when the body does not get the right amount of the vitamins, minerals, and other nutrients it needs to maintain healthy tissues and organ function.Malnutrition occurs in people who are either under-nouri...
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Malnutrition(literally,"bad nutrition") is defined as"inadequate nutrition," and while most people interpret this as undernutrition, falling short of daily nutritional requirements, it can also mean overnutrition, meaning intake in excess of what ...
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Some chemicals cause burns. Others may be absorbed through skin or lungs, causing hidden damage.
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