Coordination Chemistry in Biomedical Imaging Quiz
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Questions and Answers

Which medical imaging technique relies upon the emission and detection of highly penetrating gamma (γ) rays?

  • Positron Emission Tomography (PET)
  • Single Photon Emission Computer Tomography (SPECT) (correct)
  • X-ray imaging
  • Magnetic Resonance Imaging (MRI)

    • Which type of radiation is used in PET/SPECT imaging?

  • Neutron radiation (n emission)
  • Beta radiation (e- emission)
  • Alpha radiation (He nuclei)
  • Gamma radiation (γ emission) (correct)

    • What is a key characteristic of PET/SPECT imaging compared to MRI?

  • Use of alpha radiation
  • High spatial resolution (correct)
  • Use of non-radioactive materials
  • Low sensitivity

    • Which type of radiation has low penetration and is stopped by paper and clothing?

    <p>Alpha radiation (He nuclei)</p> Signup and view all the answers

    What is the main advantage of using gamma rays for medical imaging?

    <p>Readily detected in the body tissues</p> Signup and view all the answers

    Which method has the best sensitivity among MRI, SPECT, and PET?

    <p>PET</p> Signup and view all the answers

    What is the primary method for stopping beta radiation?

    <p>Thin metal foil</p> Signup and view all the answers

    Which type of radiation is useful for imaging purposes due to its moderate penetration and body tissue transparency?

    <p>Gamma radiation</p> Signup and view all the answers

    What is the typical PET imaging dose for a human using 18F-FDG?

    <p>350 MBq</p> Signup and view all the answers

    What limits the resolution of SPECT and PET imaging techniques?

    <p>The mean free path of beta radiation</p> Signup and view all the answers

    Which radionuclide has the highest maximum beta plus energy?

    <p>$^{62}Cu$</p> Signup and view all the answers

    For what purpose is FDG (18F-Fluorodeoxy glucose) primarily used?

    <p>Visualizing metabolic functions</p> Signup and view all the answers

    What is the primary reason that PET and SPECT use radioactive materials that emit γ radiation?

    <p>To enhance the penetration of the radiation through body tissues</p> Signup and view all the answers

    Why are PET and SPECT referred to as TRACER methods?

    <p>Because they utilize pharmacologically insignificant amounts of materials</p> Signup and view all the answers

    Which medical imaging technique has the poorest spatial resolution among MRI, SPECT, and PET?

    <p>SPECT</p> Signup and view all the answers

    What is the main advantage of using gamma rays for medical imaging?

    <p>They can penetrate body tissues while being readily detected</p> Signup and view all the answers

    What is the typical sensitivity order from highest to lowest among MRI, SPECT, and PET imaging techniques?

    <p>SPECT, PET, MRI</p> Signup and view all the answers

    What is the primary purpose of using radioactive materials in PET and SPECT imaging?

    <p>To ensure that the emitted radiation can penetrate body tissues</p> Signup and view all the answers

    What is the typical imaging dose of 18F-FDG for a mouse?

    <p>10 MBq</p> Signup and view all the answers

    What does SPECT stand for in the context of medical imaging?

    <p>Single Photon Emission Computerized Tomography</p> Signup and view all the answers

    Which radionuclide has the highest maximum beta plus energy?

    <p>$^{66}Ga$</p> Signup and view all the answers

    What limits the resolution of PET imaging techniques?

    <p>Maximum beta plus energy</p> Signup and view all the answers

    What is the primary function of 18F-Fluorodeoxy glucose (FDG) in functional imaging?

    <p>To visualize metabolic functions</p> Signup and view all the answers

    What is the mode of action of 18F-FDG in mimicking glucose?

    <p>It accumulates by a metabolic process</p> Signup and view all the answers

    What does PET stand for in the context of medical imaging?

    <p>$eta^+$ Particle Emission Tomography</p> Signup and view all the answers

    Which type of radiation is used in SPECT and PET imaging?

    <p>$eta^+$ radiation</p> Signup and view all the answers

    What is the primary method for stopping gamma radiation?

    <p>$1 ext{ cm - } 1 ext{ m }$ of concrete or lead</p> Signup and view all the answers

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