Questions and Answers
What is the main difference between stable and unstable isotopes?
Stable isotopes do not decay and do not produce radiation, while unstable isotopes readily decay and give off subatomic particles and electromagnetic energy.
How is the distribution of a radioisotope tracked in nuclear medicine?
By measuring the amount of radiation it gives off
What is the purpose of using technetium-99m in nuclear medicine?
To scan various organs like the brain, heart, and lungs
How is radioactive iodine-131 used in diagnosing thyroid activity?
Signup and view all the answers
What is the half-life of tritium, a radioisotope of hydrogen?
Signup and view all the answers
What is the main function of stable isotopes in nuclear medicine?
Signup and view all the answers
What are the two main types of isotopes mentioned in the text?
Signup and view all the answers
Which element has isotopes with unique names deuterium and tritium?
Signup and view all the answers
What is the risk associated with excessive exposure to radioactive isotopes?
Signup and view all the answers
What is one example of a diagnostic application of radioactive iodine-131?
Signup and view all the answers
What is the main characteristic of radioactive isotopes used in nuclear medicine?
Signup and view all the answers
What is one medical application of radioactive isotopes?
Signup and view all the answers
What is an isotope?
Signup and view all the answers
Which of the following best describes the atomic number of an atom?
Signup and view all the answers
What is the mass number of an atom?
Signup and view all the answers
Which statement about isotopes is true?
Signup and view all the answers
What is the atomic number of carbon?
Signup and view all the answers
How many protons does a carbon-13 isotope have?
Signup and view all the answers
What distinguishes isotopes of the same element from each other?
Signup and view all the answers
Study Notes
- Isotopes are variations of the same element with different numbers of neutrons in their nuclei.
- All isotopes of a given element have the same atomic number and position in the periodic table.
- Stable isotopes have a stable proton-neutron combination and do not decay, while unstable isotopes are radioactive and do decay.
- Some elements can only exist as unstable isotopes.
- Hydrogen has two stable isotopes: deuterium and tritium.
- Stable isotopes do not emit radiation or pose health risks, while radioactive isotopes do.
- The half-life of a radioisotope is the time it takes for half of a sample to decay.
- Nuclear medicine uses radioactive isotopes in medical imaging and therapeutic applications.
- Medical uses of radioactive isotopes include diagnosing and treating various conditions, such as thyroid disorders and cancer.
- Technetium-99m is used in SPECT and PET imaging to examine organ function.
- Iodine-131 is used in thyroid function testing.
- Radioactive isotopes have short half-lives and typically decay before causing damage to patients.
- Commonly used radioisotopes in medicine include technetium-99m, iodine-131, and 59 Fe.
- Radioisotopes are used in cancer treatment, particularly for eye and skin cancer.
- Radioisotopes are used for anemia diagnosis and gamma ray irradiation of tumors.
- Technetium-99m, iodine-131, and xenon-133 are used for brain, thyroid, liver, bone marrow, lung, heart, and intestinal scanning.
- Gold-198 is used for liver disease diagnosis.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Telegram channel : <a href="https://t.me/mcqb2">https://t.me/mcqb2</a>