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 …

Aug 14, 2008 · 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 …

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.

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 …

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 …

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

Radionuclide A chemical substance, called an isotope, that exhibits radioactivity. A gamma camera, used in nuclear medicine procedures, will pick up the radioactive signals as the …

Some nuclides are unstable and radioactive. These nuclides are known as radionuclides (radioactive nuclides) or radioisotopes (radioactive isotopes). These unstable isotopes decay …