Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
Which of the following statements about medical tracers is true?
the decay of the radioactive isotope in the tracer releases detectable radiation.
they are administered into the bloodstream and gather in regions where the body uses the tagged molecule.
they are compounds where a radioactive isotope is attached to a molecule that the body can use.
all of the above
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What can medical tracers help identify in the context of heart imaging?
dead muscle tissue
areas with reduced blood flow
blockages in the coronary artery
all of the above
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Why are glucose-based tracers ideal for identifying tumours?
cancer cells consume more glucose due to their high metabolic rate
glucose-based tracers specifically target cancer cells
cancer cells have a lower metabolic rate than normal cells
cancer cells are more sensitive to the radiation emitted by the tracers
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Which of the following components of a gamma camera prevents background radiation from interfering with the image?
scintillation crystal
photomultiplier tubes
collimator
lead shielding
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What is the role of the collimator in a gamma camera?
to protect the patient from excessive radiation exposure
to convert scintillations into electrical signals
to allow gamma rays to enter at right angles only
to translate electrical signals into images
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Which component of a gamma camera lights up when a gamma ray impacts it?
lead shielding
photomultiplier tubes
scintillation crystal
collimator
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What is the term for the high metabolic rate of cancer cells?
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Explain how medical tracers differ from traditional X-rays in terms of the information they provide about the body.
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Describe the properties of technetium-99m that make it suitable for use in medical tracers.
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Outline the steps involved in creating an image using a gamma camera.
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