Radioisotope

Radioisotope therapy involves having an injection or swallowing the radioisotope (eg radioactive iodine, Iodine-131). This accumulates in the thyroid gland before circulating the body in the bloodstream.
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radioisotope stent by IsoStent IsoStent is working in conjunction with J&J using their Palmaz-Schatz stent in development of a radioactive stent that, in animal trials, has greatly reduced restenosis of stented veins.
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A radioisotope is injected into a vein. After the liver has had sufficient time to absorb the radioisotope, you will be asked to lie on a table where you will be positioned under the scanner.
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bone-seeking radioisotope
A radioactive substance that is given through a vein, and collects in bone cells and in tumor cells that have spread to the bone. It kills cancer cells by giving off low-level radiation.
booster ...
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Recent exposure to radioisotopes -- a recent nuclear medicine scan, for example -- can interfere with test results. Drugs that can decrease LH measurements include birth control pills, hormone replacement therapy, and testosterone.
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This test, also called a ventilation/perfusion scan (V/Q scan), uses small amounts of radioactive tracers (radioisotopes) to study airflow (ventilation) and blood flow (perfusion) in your lungs.
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This procedure may require the injection of a radioisotope, following its distribution, and then performing excision of the associated regional lymph nodes (sentinel node [SLN] biopsy technique).
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Cholescintigraphy: A diagnostic test in which a two-dimensional picture of a radiation source in the biliary system is obtained by the use of radioisotopes.
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In a lung perfusion scan, a small amount of the protein labeled with a radioisotope is injected into the patient's hand or arm vein.
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There is a slight amount of radiation from the radioisotope. Most of this radiation exposure occurs to the kidneys and bladder as the isotope is excreted. Virtually all radiation is gone from the body in 24-hours.
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Because the radioisotope used in a PET scan is short-lived, the amount of radiation exposure the patient receives is about the same as two chest X-rays. The radiopharmaceuticals discharge positrons from wherever they are used in the body.
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The most commonly used PET brain radiopharmaceutical is a substance similar to sugar or glucose and it is called fluorodeoxyglucose (FDG), which is labeled with a radioisotope called fluorine-18 (18F).
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Robert O. Dillman, MD, FACP: Radioimmunotherapy at the present time consists of monoclonal antibodies that have radioisotopes attached to them so that you can target the radiation to whatever the antibody binds to.
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The liver may be viewed using a computerized tomography (CT) scan, ultrasound, or a harmless radioactive highlighting substance called a radioisotope.
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