0
It's the time it takes for half of the atoms of a given sample of a radionuclide to decay.
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
Nuclear medicine scan?
For most nuclear imaging studies, radionuclide is injected into the patient and the images are taken with a gamma camera suspended above the patient who will be lying on a table. The camera detects the gamma rays emitted from the radionuclide in the patient's body and uses this information to produce an image that shows the distribution of the radionuclide within the body. The image is recorded on film and is called a radionuclide scan.
What is the decay rate of a radioactive isotope?
The decay rate of a specific radionuclide will depend on the quantity of the material in a sample. The more there is, the higher the decay rate. Decay rate for a specific isotope of a specific element is set by the nature of the radioisotope itself; it is an innate property or characteristic. Only by studying samples (specific quantities) containing large numbers of atoms of a given radioisotope, and by counting the number of decay events per unit of time, can we arrive at a characteristic called the half-life of that radioisotope.The half-life of a radionuclide is a statistically derived measure of the rate of its decay. And, to repeat, the rate of decay for a given radionuclide, is a natural characteristic of that radionuclide. It's the number of decays per unit of time that an observer can expect to count for a given sized sample of the material. Use the links below to gather more information.
How can you say that radioactive decay is random unless you know that the nuclides are identical in the first place?
Radioactive decay is a random event. But we can assess it by statistical analysis of a large number of decay events across time for a given radionuclide. Standard stastical analysis ideas apply. The way we know that it is the radionuclide we specify is that we refine the sample chemically. Then we look at the decay mode. If it is a situation where there is particle emission, we can identify the particle and the energy it comes out at. If its electromagnetic, we can specify an energy associated with the photon. The mode of decay and the energy cast off are the ways we can insure our "count" of the decay events specifically targets the radionuclide we are investigating. That and the applied chemistry we specified to clean up the sample. We're good at this radioactive decay thing. We can count even a very few decay events, and do so accurately across time (though more is better). And because we've done our homework as regards type of decay and energies, we know what it is that is decaying, and how long it is taking to decay. We can arrive at a half-life for a given radionuclide. A link can be found below.
How do you determine the half life of a radioactive substance that has changed through radioactive decay After 40 days the original substance left is is one sixteenth of the original amount?
the halflife is 10 days
Does uranium 238 have the shortest half life?
The half life of 238U is 4,468.109 years; this is a very long halflife !
What is the image produced by gamma camera after injection of radionuclide?
Radionuclide
When was Illadelph Halflife created?
Illadelph Halflife was created on 1996-09-24.
What is nm radionuclide sehcat bile study?
NM radionuclide seHCAT bile study day 1
What is the radionuclide used in most nuclear medicine procedures?
Technitium 99m is the most common radionuclide used in nuclear medicine.
Is a radionuclide a stable atom?
yes
What is radionuclide scanning?
Radionuclide scanning-- Diagnostic test in which a radioactive dye is injected into the bloodstream and photographed to display internal vessels, organs and tissues.
Will Valve be releasing a HalfLife 4?
Yes.
By far the radionuclide used in most nuclear medicine procedures is?
Technitium 99m is the most common radionuclide used in nuclear medicine.
Nuclear medicine scan?
For most nuclear imaging studies, radionuclide is injected into the patient and the images are taken with a gamma camera suspended above the patient who will be lying on a table. The camera detects the gamma rays emitted from the radionuclide in the patient's body and uses this information to produce an image that shows the distribution of the radionuclide within the body. The image is recorded on film and is called a radionuclide scan.
Can you use halflife to determine when dinosaurs died?
yes
What is a radionuclide retrograde cystogram?
instead of a contrast dye and x-ray pictures, the test can be done with a radioactive tracer and a different camera. This is known as a "radionuclide" retrograde cystogram.
What is the correct order of nuclear decay mode for the changes from U-238 to U-234?
U-238 --> alpha + gamma + Th-234, halflife 4.51E9 yearsTh-234 --> beta- + gamma + Pa-234, halflife 24.10 daysPa-234 --> beta- + gamma + U-234, halflife 6.66 hours
