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Questions and Answers
What is the unit of radioactivity in the SI system?
What is the unit of radioactivity in the SI system?
- Half-life (T1/2)
- Disintegration per second (Dps)
- Curie (Ci)
- Becquerel (Bq) (correct)
What property do some natural elements with unstable nuclei possess?
What property do some natural elements with unstable nuclei possess?
- Inertness
- Radioactivity (correct)
- Fixed half-life
- Stability
What is the time needed for half of the radioactive nuclei to decay called?
What is the time needed for half of the radioactive nuclei to decay called?
- Nuclear disintegration period
- Half-life (T1/2) (correct)
- Radioactive decay time
- Disintegration rate
Which type of emission from radioactive material is positively charged and can stop in a few centimeters of air?
Which type of emission from radioactive material is positively charged and can stop in a few centimeters of air?
Which type of emission from radioactive material is more penetrating than alpha particles and can be stopped by a few millimeters of tissue?
Which type of emission from radioactive material is more penetrating than alpha particles and can be stopped by a few millimeters of tissue?
What are the most commonly used radionuclides in nuclear medicine?
What are the most commonly used radionuclides in nuclear medicine?
What type of photons are identical to X-rays but have much higher energies?
What type of photons are identical to X-rays but have much higher energies?
Which radionuclide has a half-life of 211100 years and is of negligible effects on the patient?
Which radionuclide has a half-life of 211100 years and is of negligible effects on the patient?
What imaging technique uses radionuclides that decay by gamma-ray emission?
What imaging technique uses radionuclides that decay by gamma-ray emission?
What is the main disadvantage of ^131I in nuclear medicine studies?
What is the main disadvantage of ^131I in nuclear medicine studies?
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