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What is physiologic distribution of radiotracer in a petscan?
Physiologic distribution of radiotracer in a pet scan is the normal functional distribution of the radiotracer. The radiotracer is radioactive tracer or radioactive chemical that is used during a pet scan to produce 3-dimensional, color images of the part of the body that is being scanned.
How do you use the word radioactive in a sentence?
That area will be radioactive for a long, long time.
How long is the half life of radioactive water?
The half life of radioactive water depends on what radioactive nuclides are present in the water.
How long would the area near a nuclear power plant remain radioactive after an accident?
Basically a very long time. Most radioactive isotopes are radioactive for a long time. Uranium 232 has a half life of 69 years and plutonium 238 has a half life of 88 years. Some isotopes are very long lived.
What is radioactive half-life used for?
to determine how long it will take to half of nuclids to decay, having use in radioactive materials operations
Is europium radioactive?
Europium is radioactive, though for most practical purposes it can be treated as stable. 52.2% of europium is stable. 47.8%, is radioactive 151Eu, but the half life of this is long, at 5,000,000,000,000,000,000 years. Like all other elements, europium has radioactive synthetic isotopes.
Is osmium radioactive?
Osmium is very weakly radioactive. There are seven naturally occurring isotopes of osmium, four of which are stable. The three radioactive isotopes all have very long half lives, but they account for 42.39% of it.
How long does radioactive fallout last?
3000 years or around that number
What is the problem with disposing of radioactive wastes is that they have a long what?
Radioactive substances have half-lives. This is because the isotope constantly is changing from the radioactive isotope to a daughter element. For example, eventually, when uranium's radioactivity is gone, it becomes lead. After one half life of a radioactive substance, only 50% of that substance is still radioactive. Therefore, after one half-life, a piece of uranium is 50% lead and therefore %50 less radioactive. After another half-life, it has 25% of the original radioactivity, and 75% of the original uranium has become lead. This is the problem with radioactive wastes. It takes many years just for one half lives for some substances, such as uranium. Because radioactivity is harmful, those substances have to be stored until they are no longer radioactive. So, in short, the problem with disposing of radioactive wastes is that they have long half-lives. (although this is not true with ALL substances because some have short half-lives, but, in general, radioactive substances have long half-lives.
Is oxygen stable or radioactive?
Oxygen, under normal conditions, is non-radioactive. But there are traces of radioactive isotopes present which makes the oxygen slightly radioactive. Additionally, these isotopes have long half-lives, so the radiation given off will not be a lot within a period of time.
Nuclear power how long does the radioactive source take to decay?
It depends on the radioactive source half life. refer to the related question below for more information.
Is germanium radioactive?
92.66% of the germanium found in nature is not radioactive. 7.44% of germanium is 76Ge, which has a very long half life of 1.78 x 1021 years.
