How does Mo-99 decay?

Mo-99 decays by emitting a beta particle (an electron). About 88 percent of the decays (red line) produce Tc-99m, which subsequently decays to the ground state, Tc-99g, by emitting a gamma ray.

What is the difference between TC-99 and Tc-99m?

Technetium-99 is produced during nuclear reactor operation, and is a byproduct of nuclear weapons explosions. Technetium-99m is a short-lived form of Tc-99 that is used as a medical diagnostic tool. It has a short half-life (6 hours) and does not remain in the body or the environment for long.

Is Tc-99m safe?

Technetium-99m has a photopeak of gamma-ray emission of 140.5 keV, making it a very minimal risk of toxicity. [3] The short six-hour half-life and rapid excretion from the body limit toxic effects and give enough time to perform its diagnostic imaging, all while limiting radiation exposure to the patient.

How does Tc 99m Show cardiac damage?

Tc-99m can be used to look at cardiac damage. The isotope flows in the blood stream; if there is less blood flow in the heart, there will be less isotope concentrated in the heart muscle. Similar information can be obtained for blood flow in the brain.

What is U 233 used for?

Uranium-233 (233U) is a fissile isotope of uranium that is bred from thorium-232 as part of the thorium fuel cycle. Uranium-233 was investigated for use in nuclear weapons and as a reactor fuel. It has been used successfully in experimental nuclear reactors and has been proposed for much wider use as a nuclear fuel.

How long does nuclear medicine stay in your body?

The nuclear imaging agent is out of your system within 60 hours, but it is always decaying so it becomes minimal in a relatively short period of time.

What is the half-life of uranium 235?

about 700 million years
The half-life of uranium-238 is about 4.5 billion years, uranium-235 about 700 million years, and uranium-234 about 25 thousand years.

How does technetium 99 work?

The radioisotope most widely used in medicine is technetium-99m, employed in over half of all nuclear medicine procedures. Technetium-99m decays by a process called isomeric transition, a process in which 99mTc decays to 99Tc via the release of gamma rays and low energy electrons.

Does U 233 occur naturally?

naturally occurring uranium), plutonium-239, and uranium-233, the last two being artificially produced from the fertile materials uranium-238 and thorium-232, respectively.

What should I do if I get kicked out of home?

You could look for an SRO, stay at the Y, find a youth hostel, or search for some other housing option. How you proceed depends on your situation, so start by seeing if you can stay with friends while you regroup. Originally Answered: What should you do if you get kicked out of your home and have no place to go?

What do you do when your parents kick you out at 13?

Originally Answered: What do you do when your parents kick you out of the house and you’re 13? You go to the nearest police station. I worked in a police department in a small Northern California town in 1973. One afternoon, a grandmotherly type brought in a small boy about 9 years old.

How do you politely ask someone why they kicked you out?

If they tell you why and you know that you are at fault then it’s easy. All you have to do is explain to them that you are sorry for the things you have done and you’ll try to be a better person. If they won’t tell you why or they don’t seem to have a valid reason for kicking you out then it becomes more complicated.

Would you let someone back in if they kicked you out?

It depends on the situation. If you were kicked out because of an argument you had with them then you may be able to swallow some of your pride and apologize so they let you back in.