Quiz: CT vs. MRI vs. PET Scan: What Each Shows

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1. Q1.What does a CT scan mainly use to make its pictures?

   AStrong magnets and radio wavesBA radioactive tracerCSpecial x-ray equipmentDSound waves

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2. Q2.How is an MRI different from a CT scan?

   AIt uses strong magnets and radio waves instead of x-raysBIt is always faster than a CTCIt uses a radioactive tracerDIt only shows bones

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3. Q3.What does a PET scan show that structure-based scans do not?

   AThe exact color of tissuesBHow active tissues areCThe temperature of the bodyDNothing different

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4. Q4.Why are PET and CT often combined in one procedure?

   ATo make the scan cheaper onlyBBecause CT cannot make any pictures aloneCTo show both a tumor's location and its activityDBecause MRI is never available

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5. Q5.How does a care team decide which scan to use?

   AThey always pick the newest machineBThey choose based on what they need to see for your situationCOne scan is best for everythingDThey pick the shortest scan every time

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This quiz checks understanding of educational content only. It is not medical advice. Read: CT vs. MRI vs. PET Scan: What Each Shows.