A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is a nuclide that is unstable and known to undergo radioactive decay into a different nuclide, which may be …

Sep 3, 2025 · Every radionuclide emits radiation at its own specific rate, which is measured in terms of half-life. Radioactive half-life is the time required for half of the radioactive atoms …

Radionuclides (or radioactive materials) are a class of chemicals where the nucleus of the atom is unstable. They achieve stability through changes in the nucleus (spontaneous fission, …

Oct 2, 2015 · A radioactive nuclide or radionuclide is an unstable nuclide and therefore degenerates by emitting ionizing radiation.

Mar 22, 2025 · A radionuclide scan is an imaging technique that uses a small dose of a radioactive chemical (isotope) called a tracer that can detect cancer, trauma, infection, or other …

Feb 28, 2019 · A radionuclide is an atom (element) with an unstable nucleus (core). The nucleus of the atom has excess energy that is released by different types of radioactive decay.

An unstable isotope of an element that decays or disintegrates spontaneously, thereby emitting radiation. Approximately 5,000 natural and artificial radioisotopes have been identified.

An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable. Radionuclides may occur in nature or be made in a laboratory. In medicine, they …

Radionuclides are radioactive elements. Radioactivity can be defined as the release of alpha and beta particles from atoms, and/or gamma rays that takes place when the nuclei of certain …

noncancer effects of the radionuclides in humans. Animal studies have reported inflammatory reactions in the nasal passages and kidn.