radionuclide

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Related to Radio-isotope: Radioisotope thermoelectric generator, Radioisotope dating

radionuclide

 [ra″de-o-noo´klīd]
a radioactive nuclide; one that disintegrates with the emission of corpuscular or electromagnetic radiations.

ra·di·o·nu·clide

(rā'dē-ō-nū'klīd),
An isotope of artificial or natural origin that exhibits radioactivity.

radionuclide

/ra·dio·nu·clide/ (-noo´klīd) a nuclide that disintegrates with the emission of corpuscular or electromagnetic radiations.

radionuclide

[-no̅o̅′klīd]
Etymology: L, radiare + nucleus, nut kernel
an isotope that undergoes radioactive decay. Any element with an excess of either neutrons or protons in the nucleus is unstable and tends toward radioactive decay, with the emission of energy that may be measurable with a detector. The processes of radioactive decay include beta particle emission, electron capture, isomeric transition, and positron emission. Positron-emitting radionuclides are important in positron emission tomography and in medical research. Radionuclides used in scintigraphy include 123I, 131I, 111In, 75Se, 99mTc, and 201Tl. Radionuclides of cobalt, iodine, phosphorus, strontium, and other elements are used for treatment of tumors and cancers and for nuclear imaging of internal parts of the body. See also nuclear scanning.

radionuclide

Radioactive isotope, radioisotope Radiation physics A nuclide with an unstable neutron to proton ratio, which undergoes radioactive decay; an artificial or natural nuclide with an unstable nucleus, that decays spontaneously, emitting electrons–β-particles or protons–α-particles and γ-radiation, ultimately achieving nuclear stability; RNs are used as in vivo or in vitro labels, for RT, or as sources of energy

ra·di·o·nu·clide

(rā'dē-ō-nū'klīd)
An isotope of artificial or natural origin that exhibits radioactivity. Radionuclides are used in diagnostic imaging and cancer therapy.

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 substance gathers in an organ or tissue. They are sometimes referred to as tracers.

ra·di·o·nu·clide

(rā'dē-ō-nū'klīd)
An isotope of artificial or natural origin that exhibits radioactivity. Radionuclides are used in diagnostic imaging and cancer therapy.

radionuclide (rā´dēōnoo´klīd),

n an unstable or radioactive type of atom characterized by the constitution of its nucleus and capable of existing for a measurable time. The nuclear constitution is specified by the number of protons
(A), number of neutrons
(N), and energy content, or alternatively by the atomic number
(Z), mass number
(A − N + Z), and atomic mass.

radionuclide

a radioactive nuclide; one that disintegrates with the emission of corpuscular or electromagnetic radiations. Used in diagnosis for whole body or individual organ scanning. See also radioactive isotope, nuclide.
References in periodicals archive ?
Split renal function is determined by radio-isotope DTPA renogram or MAG3 scan, which demonstrates uptake and clearance of the isotope of the individual kidneys (Figs 5(a) and (b)).
A radio-isotope is the most compact x-ray excitation source, as it does not require a high-voltage power supply.
Gabriella Wernicke, both of Weill Cornell Medical Center, presented their findings for the membership of The Society of Neuro-Oncology (SNO), titled "The study of Neurosurgical Resection and Intra-operative Cesium-131 Radio-isotope Brachytherapy in Patients with newly Diagnosed Brain Metastases," available at http://www.
Egypt had explained to the IAEA that it believed the HEU "could have been brought into the country through contaminated radio-isotope transport containers", the May 5 report said.
Further, it will eliminate the need for radioactive disposal (due to the radio-isotope found in all conventional glow bottle starters).
Unlike other functional fusion technologies, Imagio uses no x-rays (ionizing radiation) or injectable contrast agents or radio-isotopes to obtain its information, thereby reducing the patient's exposure to any potentially harmful aspects of imaging.
Les Occidentaux accusent Teheran de chercher a fabriquer l'arme atomique sous couvert de son programme nucleaire civil, notamment l'enrichissement d'uranium, ce que dementent les dirigeants iraniens, affirmant que ce programme vise exclusivement a produire de l'electricite et a mener des programmes de recherche pour produire, notamment des radio-isotopes pour les malades du cancer ou etre utilise dans l'industrie ou l'agriculture.
Zarif further said that depriving Iranian cancer patients from medical radio-isotopes, compelled Iran to build a heavy water reactor, going from an idea then to a full-fledged plant, to be commissioned soon.
Tehran says the facility is designed to produce radio-isotopes for medical treatments; the West suspects it will be geared to yielding plutonium for atomic bombs.
Iraninsists that the desert complex be free to operate under any accord as it would be designed solely to produce radio-isotopes for medical treatments.
It is for (the) purpose of producing radio-isotopes and making other tests," he said.
The Tehran nuclear reactor, which produces radio-isotopes used in medicine and agriculture, has been using Argentine fuel rods for two decades, but that fuel has now been used up.