Question

CT brain perfusion: Which of the following statements is true about CT brain perfusion?

1) It replaces the need for CT angiography
2) It is typically performed to evaluate stroke
3) It evaluates blood flow through major vessels

Answer 1

CT brain perfusion is a medical imaging technique used to evaluate blood flow in the brain. It is typically performed to evaluate stroke and evaluates blood flow through major vessels such as the internal carotid arteries and vertebral arteries.

Step-by-step explanation:

CT brain perfusion is a medical imaging technique used to evaluate blood flow in the brain. It involves injecting a contrast agent into the patient's bloodstream and taking multiple images of the brain to assess blood flow.

Statement 2) 'It is typically performed to evaluate stroke' is true. CT brain perfusion is commonly used to assess blood flow in patients suspected of having a stroke, as it can help determine the extent and location of the stroke.

Statement 3) 'It evaluates blood flow through major vessels' is also true. CT brain perfusion can evaluate blood flow through major vessels, such as the internal carotid arteries and vertebral arteries, which are important suppliers of blood to the brain.

However, statement 1) 'It replaces the need for CT angiography' is not true. While CT brain perfusion can provide valuable information about blood flow, it does not replace the need for CT angiography, which specifically evaluates the blood vessels in the brain.