Gamma camera (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What type of images can a gamma camera create?
What type of images can a gamma camera create?
2D or 3D images
What is the core component of a gamma camera?
What is the core component of a gamma camera?
Photomultiplier tube
What does the photocathode release when gamma photons hit it?
What does the photocathode release when gamma photons hit it?
Electrons
What are dynodes set at in a photomultiplier tube?
What are dynodes set at in a photomultiplier tube?
Higher positive potentials
What is the electron multiplication process in a PMT called?
What is the electron multiplication process in a PMT called?
Secondary emission
What is the purpose of the lead collimator?
What is the purpose of the lead collimator?
Filter out scattered gamma photons
What does the scintillator emit when struck by gamma photons?
What does the scintillator emit when struck by gamma photons?
Visible light photons
Which photons does the collimator allow through?
Which photons does the collimator allow through?
Photons parallel to the holes
What does the computer reconstruct to form an image?
What does the computer reconstruct to form an image?
Spatial distribution of gamma rays
What tracer is used in a thyroid scan?
What tracer is used in a thyroid scan?
Radioactive iodine isotope