PET Imaging Coincidence Events Quiz
11 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the biggest contributor to dead time in nuclear medicine imaging?

  • Single events (correct)
  • Scatter coincidence
  • Prompt events
  • True coincidence
  • In nuclear medicine imaging, what is a scatter coincidence?

  • Events where a gamma ray photon scatters within the patient body before being detected (correct)
  • All coincident events counted in the initial coincidence
  • Occurs when two single photons from two separate annihilations are detected within the CTW
  • Two annihilation photons from a single annihilation interaction are detected within the CTW
  • What is a random coincidence in nuclear medicine imaging?

  • Each annihilation photon surpassing a low energy threshold but not ultimately counted unless a coincident photon is detected
  • All coincident events counted in the initial coincidence
  • Events where a gamma ray photon scatters within the patient body before being detected
  • Occurs when two single photons from two separate annihilations are detected within the CTW (correct)
  • What is the role of a capacitor?

    <p>Regulates electric current</p> Signup and view all the answers

    What does 'random incident' refer to in the context of gamma ray detection?

    <p>Detection of two unassociated gamma rays in separate detectors</p> Signup and view all the answers

    What does 'system sensitivity' refer to in the context of imaging systems?

    <p>Ability to accurately measure the emitted gamma rays by radioactive tracers</p> Signup and view all the answers

    What does 'noise' refer to in the context of acquired data or images?

    <p>Unwanted variations in the acquired data or images</p> Signup and view all the answers

    How does pitch change the amount of radiation a patient is exposed to during a radiopharmaceutical procedure?

    <p>It increases the amount of radiation exposure</p> Signup and view all the answers

    What are Hounsfield Units used for in a CT study?

    <p>Expressing relative attenuation assigned to voxels in a CT study</p> Signup and view all the answers

    What type of imaging does Magnetic Resonance Imaging (MRI) utilize?

    <p>Powerful magnets and radiofrequency pulses</p> Signup and view all the answers

    What type of imaging does Computed Tomography (CT) employ?

    <p>X-rays and advanced computer technology</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser