A Patient Is Scheduled for a ^99mTc-HMPAO Brain Scan

question 9

Multiple Choice

A patient is scheduled for a ^99mTc-HMPAO brain scan.The technologist must remember that ^99mTc-HMPAO

• A)only crosses a compromised blood-brain barrier and in proportion to blood flow.
• B)remains trapped in the subarachnoid space for 20 minutes after injection.
• C)acts as an analog to thallium-201.
• D)remains trapped in the brain in proportion to cerebral blood flow at the time of injection.

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