Nuclear medicine

Get Started. It's Free
or sign up with your email address
Nuclear medicine by Mind Map: Nuclear medicine

1. Radio activity

1.1. What is it?

1.2. Alpha radiation

1.2.1. Eject particles that carry charge of 2+ and have a mass of 4 atomic mass units Emission of an alpha particle causes: Mass number of radionuclide to decrease by 4 units Atomic number to decrease by 2 units Which are the equivalent to a nucleus of Helium.

1.2.2. Alpha particles: are radioactive particles that is made up of 2 protons and 2 neutrons When radioactive particles goes through a kind of radioactive decay, this is known as alpha decay

1.3. Beta radiation

1.3.1. beta minus decay: emission of electrons (aka beta particles) neutron is converted into a proton beta particle with a charge of -1 is emitted example: converting thorium into proactinium

1.3.2. medium ionization and penetration power

1.3.3. beta plus decay: emission of positrons Proton converted into neutron causing ejection of positrons Example:

1.4. gamma radiation

1.4.1. After alpha & beta decay, surplus energy is sometimes emitted.

1.4.2. Gamma rays are just photon Example: It DOES NOT have a charge, in the equation NOTHING change.

1.4.3. Penetration power is the highest among the three, can be block by several cm of lead

1.4.4. Frequency of the rays are higher than 10^19 Hz and are in the range of 0.0005 to 0.1nm Does not alter the atomic number or mass number of the nucleus.

1.4.5. They are a form of electromagnetic radiation (EMR) Their energy is greater than 100 keV

2. Medical Treatment

2.1. Diagnostic Technique in nuclear medicine

2.2. Radionuclide therapy