22 Questions
What is the main characteristic that distinguishes isotopes of an element?
Different number of neutrons
Which of the following isotopes is stable?
Carbon-12
What happens to unstable nuclei?
They emit alpha, beta, and gamma radiation to become stable
What is the source of radionuclides used in medical imaging?
Artificial production in nuclear reactors
How are radionuclides produced artificially?
By adding neutrons to a stable nucleus
What is the term for unstable nuclei that are radioactive?
Radionuclides
How many known radionuclides are there?
Over 2700
What happens to the mass of a nucleus when a neutron is absorbed?
It is increased by one
What is the result of forcing an additional proton into a stable nucleus?
A neutron deficit
What is the purpose of a medical minicyclotron?
To produce short-lived radionuclides at or near the hospital site
What is the typical half-life of radionuclides produced in a cyclotron?
Less than a minute to a couple of hours
What is the outcome of the reaction 18O +p→ 18F +n?
The atomic number of oxygen has increased by one to become fluorine
What is the function of a cyclotron in producing radionuclides?
To accelerate positively charged ions
What happens to the atomic number of a nucleus when a proton is forced into it?
It increases by one
What is the result of neutron absorption by a nucleus?
An increase in mass number
What is the origin of diagnostic imaging technologies used in nuclear medicine?
A combination of Röntgen's and Becquerel's discoveries
What is the primary reason for the development of new technologies in nuclear medicine?
To improve patient care
What is unique about the nucleus of ordinary hydrogen?
It consists of a single proton
What is the characteristic of stable lighter nuclei?
They have nearly equal numbers of protons and neutrons
What is the necessary condition for practicing nuclear medicine safely?
Having a clear understanding of radiation principles
What has been the trend in nuclear medicine over the last century?
An increase in innovation each decade
What is the proportion of stable nuclides in the world?
Nearly all
This quiz covers the introductory lecture on Nuclear Medicine Physics by Dr. Mohammed Saeed Alqahtani, discussing the basics of nuclear medicine and its technologies.
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