What are some medical uses of radiation?

The most well known is using x rays to see whether bones are broken. The broad area of x-ray use is called radiology. Within radiology, we find more specialized areas like mammography, computerized tomography (CT), and nuclear medicine (the specialty where radioactive material is usually injected into the patient).

What are some radioisotopes used in medicine?

A radioisotope used for diagnosis must emit gamma rays of sufficient energy to escape from the body and it must have a half-life short enough for it to decay away soon after imaging is completed. The radioisotope most widely used in medicine is technetium-99m, employed in some 80% of all nuclear medicine procedures.

What is a radioisotope test?

A radionuclide scan is a way of imaging bones, organs and other parts of the body by using a small dose of a radioactive chemical. There are different types of radionuclide chemical. The one used depends on which organ or part of the body is to be scanned. Note: the information below is a general guide only.

How is radioactivity used in the medical field?

The most well known is using x rays to see whether bones are broken. The broad area of x-ray use is called radiology. Within radiology, we find more specialized areas like mammography, computerized tomography (CT), and nuclear medicine (the specialty where radioactive material is usually injected into the patient).

What are some uses of radiation?

Medical Uses. Hospitals, doctors, and dentists use a variety of nuclear materials and procedures to diagnose, monitor, and treat a wide assortment of metabolic processes and medical conditions in humans. In fact, diagnostic x-rays or radiation therapy have been administered to about 7 out of every 10 Americans.

What is radiation in medicine?

Medical radiation. X-rays, gamma rays, and other forms of ionizing radiation are used to diagnose and treat some medical conditions. This can be in the form of radiation that penetrates from outside the body, or radioactive particles that are swallowed or inserted into the body.

What is used for medical imaging?

Small amounts of radioactive markers, called radiopharmaceuticals , are used for molecular imaging. Other types of medical imaging are magnetic resonance imaging (MRI) and ultrasound imaging. Unlike conventional X-ray, CT and Molecular Imaging, MRI and ultrasound operate without ionizing radiation .

What is radiation therapy used for?

Radiation therapy uses high-energy particles or waves, such as x-rays, gamma rays, electron beams, or protons, to destroy or damage cancer cells.

What is TC 99 used for?

Technetium-99m is a metastable nuclear isomer of technetium-99 (itself an isotope of technetium), symbolized as 99mTc, that is used in tens of millions of medical diagnostic procedures annually, making it the most commonly used medical radioisotope.

What is a medical isotope?

A medical isotope is a safe radioactive substance used primarily to diagnose illness. The energy emitted by the isotope when inside a patient is detected by special cameras while the patient is being scanned. The branch of medicine and medical imaging that uses these isotopes is known as nuclear medicine.

How does radiation affect the body?

This shakes things up all over the body. Let’s do a head-to-toe walk-through to investigate how high doses of radiation can damage the human body. BRAIN: Nerve cells (neurons) and brain blood vessels can die, leading to seizures. EYES: Radiation exposure increases the risk of cataracts.

What isotopes are used in radiation therapy?


  • Iodine-131 is used to treat certain types of thyroid cancer and some rarer types of cancer. You may need to stay in hospital for this treatment.
  • Strontium-89 and samarium-153 is used to treat some types of secondary bone cancer.
  • Radium-223 is a new radioisotope therapy that is used to treat secondary bone cancer.
  • What are the symptoms of radiation exposure?

  • People are terrified about being exposed to radiation, including the stuff that some experts fear might leak from the quake-stricken nuclear power plants in Japan. That makes sense.
  • Nausea and vomiting.
  • Spontaneous bleeding.
  • Bloody diarrhea.
  • Sloughing of skin.
  • Hair loss.
  • Severe fatigue.
  • Mouth ulcers.
  • Which rays are used in cancer treatment?

    Radiation Therapy to Treat Cancer. Radiation therapy (also called radiotherapy) is a cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors. At low doses, radiation is used in x-rays to see inside your body, as with x-rays of your teeth or broken bones.

    How does an xray work?

    This beam travels through the air, comes into contact with our body tissues, and produces an image on a metal film. Soft tissue, such as skin and organs, cannot absorb the high-energy rays, and the beam passes through them. Dense materials inside our bodies, like bones, absorb the radiation.

    Are microwaves radiation?

    Microwaves are a form of “electromagnetic” radiation; that is, they are waves of electrical and magnetic energy moving together through space. Electromagnetic radiation spans a broad spectrum from very long radio waves to very short gamma rays. But the most common consumer use of microwave energy is in microwave ovens.

    What is a radioactive tracer and how is it used?

    A radioactive tracer, or radioactive label, is a chemical compound in which one or more atoms have been replaced by a radionuclide so by virtue of its radioactive decay it can be used to explore the mechanism of chemical reactions by tracing the path that the radioisotope follows from reactants to products.

    How is radiation used at the airport?

    To do their job, they use different kinds of screening equipment such as backscatter x-ray and cabinet x-ray machines. They also use millimeter wave machines and metal detectors. X-ray machines use ionizing radiation. Other airport security screening machines use non-ionizing radiation.

    What is the medical definition of radiation?

    : a type of dangerous and powerful energy that is produced by radioactive substances and nuclear reactions. medical : the use of controlled amounts of radiation for the treatment of diseases (such as cancer) : energy that comes from a source in the form of waves or rays you cannot see.

    Where should the high level radioactive waste be stored?

    In 1993, reprocessing was suspended following a resolution of the Belgian parliament; spent fuel is since being stored on the sites of the nuclear power plants. The deep disposal of high-level radioactive waste (HLW) has been studied in Belgium for more than 30 years.

    How is a radioactive tracer used in medicine?

    Nuclear medicine is a medical specialty that uses radioactive tracers (radiopharmaceuticals) to assess bodily functions and to diagnose and treat disease. Specially designed cameras allow doctors to track the path of these radioactive tracers.

    What is the most common source of background radiation?

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