10 Questions
What is the unit of radioactivity in the SI system?
Becquerel (Bq)
What property do some natural elements with unstable nuclei possess?
Radioactivity
What is the time needed for half of the radioactive nuclei to decay called?
Half-life (T1/2)
Which type of emission from radioactive material is positively charged and can stop in a few centimeters of air?
Alpha particles
Which type of emission from radioactive material is more penetrating than alpha particles and can be stopped by a few millimeters of tissue?
Beta particles
What are the most commonly used radionuclides in nuclear medicine?
Gamma-ray emitters
What type of photons are identical to X-rays but have much higher energies?
Gamma-rays
Which radionuclide has a half-life of 211100 years and is of negligible effects on the patient?
^99mTc
What imaging technique uses radionuclides that decay by gamma-ray emission?
Single photon imaging
What is the main disadvantage of ^131I in nuclear medicine studies?
Produces beta rays with relatively large radiation dose to the patient
Test your knowledge of the physics principles behind nuclear medicine and radiotherapy in this quiz. Explore topics such as radioisotopes, radioactivity, and the diagnostic applications of trace amounts of radioactive materials.
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