What are the side effects of technetium 99m
John Johnson
Updated on April 11, 2026
headache.dizziness.nausea.flushing (warmth, redness, or tingly feeling)back pain.chest pain.diarrhea.fatigue.
Does technetium-99m have side effects?
Technetium-99m has a photopeak of gamma-ray emission of 140.5 keV, making it a very minimal risk of toxicity. [3] The short six-hour half-life and rapid excretion from the body limit toxic effects and give enough time to perform its diagnostic imaging, all while limiting radiation exposure to the patient.
How long does technetium-99m stay in the body?
Technetium-99m is a short-lived form of Tc-99 that is used as a medical diagnostic tool. It has a short half-life (6 hours) and does not remain in the body or the environment for long.
What does technetium do to the body?
Technetium-99m is used to image the skeleton and heart muscle in particular, but also for brain, thyroid, lungs, liver, spleen, kidney, gall bladder, bone marrow, salivary and lachrymal glands, heart blood pool, infection and numerous specialized medical studies.What are the pros and cons of using technetium-99m?
It gives high yields of 99Mo of very high specific activity. However, its main disadvantages are high costs and generation of large quantities of highly radioactive waste. Depending on the separation method several types of generators were developed.
Is technetium poisonous or hazardous?
Technetium has no biological role. Technetium does not occur naturally in the biosphere and so normally never presents a risk. All technetium compounds should be regarded as highly toxic, largely because of its radiological toxicity.
How do you get 99 Molybdenum?
Mo-99 is produced in the uranium-bearing targets by irradiating them with thermal neutrons. Some of the U-235 nuclei absorb these neutrons, which can cause them to fission. The fission of the U-235 nucleus produces two but sometimes three lower-mass nuclei referred to as fission fragments.
Why Technetium 99m is used in medicine?
Tc-99m is the preferred tracer for a number of scans used in medicine worldwide to help diagnose medical conditions. Tc-99m scans are used to detect a wide range of conditions including injuries, infections, tumours, heart disease, thyroid abnormalities, kidney conditions and also to guide some cancer procedures.What are the benefits of technetium 99m?
- The principal benefit of this radioactive substance is its long half life. 6 hours is long enough for various medical examinations to be done. …
- The radiation dose to the patient remains low because 99mTc emits gamma-ray.
- 99m …
- It emits the 140 keV gamma rays, which is readily detectable.
Tc-99m can be used to look at cardiac damage. The isotope flows in the blood stream; if there is less blood flow in the heart, there will be less isotope concentrated in the heart muscle. Similar information can be obtained for blood flow in the brain.
Article first time published onHow long does nuclear medicine stay in your body?
The nuclear imaging agent is out of your system within 60 hours, but it is always decaying so it becomes minimal in a relatively short period of time.
Why is element 43 unstable?
Technetium is a radioactive element, with no stable isotopes. With an atomic number of 43, it is the lightest unstable element. … The short answer is that there is no number of neutrons you can put in a technetium atom to form a stable nucleus.
Is technetium 99m expensive to produce?
In other words, the cost for producing Mo-99 probably range from about $125 to $325 per 6-day curie. The overall cost of producing 12,000 6-day curies of Mo-99 per week to meet 2006 demand at $225 per 6-day curies is about $140 million.
What is Tc 99m thyroid scan?
The 99m Tc Thyroid Scan test is performed to assess the functioning of thyroid gland. A radiotracer dye called Tc-99m pertechnetate is injected and its uptake by the thyroid gland is measured. Results of the 99m Tc Thyroid scan are assessed and interpreted with other biochemical and immunological studies.
How is technetium 99m used in bone imaging?
Technetium-99m MDP Tc-99m emits 140 keV gamma rays upon decay, and these gamma rays are detected by nuclear gamma cameras to allow localizing where the Tc-99m travels within the body. For imaging bone metabolism, the radionuclide is usually attached to medronic acid (methylene diphosphonate).
How was technetium 99m discovered?
Technetium-99m was discovered as a product of cyclotron bombardment of molybdenum. This procedure produced molybdenum-99, a radionuclide with a longer half-life (2.75 days), which decays to 99mTc.
Where is molybdenum-99 used?
Molybdenum-99 (Mo-99) decays to create technetium-99m (Tc-99m), a radioisotope used by hospitals and medical centres. Tc-99m is used worldwide in nuclear medicine procedures to diagnose heart disease and other diseases.
Who produces technetium 99m?
In 2018, one of those partners, NorthStar Medical Radioisotopes, received Food & Drug Administration (FDA) approval for manufacture of its domestic, non-uranium Mo-99, the RadioGenix System (technetium 99m generator) and Tc 99m produced by the RadioGenix System.
How is technetium 99m put in the body?
The 66 hours molybdenum radioactive half-life give enough time to transport it to hospitals and to extract chemically technetium 99m. The radioisotople placed in a radiopharmaceutical serum is then injected into the patient, which allows gamma camera scans providing accurate pictures of the patient’s body.
How is technetium 99m excreted?
1) of technetium 99m consist of a short, but not too short, physical half-life of six hours, the emission of a clean 140 kev gamma ray, and the absence of primary particle radiation. … Excretion of Tc99m after administration of pertechnetate is rapid during the first twenty-four hours, mostly in the urine.
How much does technetium cost?
Atomic Number:43Atomic Weight:97Electron Configuration:[Kr]5s24d5Total Isotopes55Total Isomers21
Why does technetium 99m have a short half life?
GeneralNamestechnetium-99, Tc-99Protons43Neutrons56Nuclide data
What is meant by half-life?
half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive …
What are the benefits of using nuclear isotopes in the diagnosis of disease?
Well, nuclear imaging is a part of the medical branch involving radiopharmaceuticals, used to diagnose or monitor a patient’s disease. Specifically, radioisotopes make effective tracers, meaning the radiation they emit can be traced and utilised to make a diagnosis.
How are isotopes used in medical diagnosis?
Radioisotopes are an essential part of medical diagnostic procedures. In combination with imaging devices which register the gamma rays emitted from within, they can be used for imaging to study the dynamic processes taking place in various parts of the body.
How are radioactive isotopes used in medical diagnosis?
As diagnostic agents, radioisotopes commonly are used as tracers. Tracers can be taken orally, or they may be injected or inhaled. The radioisotope can then be tracked using imaging technologies to examine blood flow to specific organs and assess organ function.
Can nuclear medicine make you sick?
Are there side effects to nuclear medicine exams? Very few people experience side effects from a nuclear medicine exam. Allergic reactions are extremely rare. Any adverse reactions are usually mild, pass quickly, and need little or no medical treatment.
What are the disadvantages of nuclear medicine?
What are the limitations of General Nuclear Medicine? Nuclear medicine procedures can be time consuming. It can take several hours to days for the radiotracer to accumulate in the area of interest. Plus, imaging may take up to several hours to perform.
Can a nuclear stress test damage your heart?
Although extremely rare, it’s possible that a nuclear stress test could cause a heart attack. Low blood pressure. Blood pressure may drop during or immediately after exercise, possibly causing you to feel dizzy or faint. The problem should go away after you stop exercising.
Why is technetium artificial?
Technetium can only be produced artificially because most forms or isotopes of it (atoms of the same chemical element with different numbers of neutrons) have an excess of neutrons, making it very unstable. … Unstable elements undergo radioactive decay into stable elements.
What was the first man made element?
The name is from the Greek word for artificial, since technetium was the very first man-made element, yet despite the name, technetium is found naturally albeit in tiny traces.
