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Head CT Indications and Comparisons with MRI

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Head CT Indications and Comparisons with MRI

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Questions and Answers

Which of the following findings on contrast-enhanced CT scan is characteristic of glioblastoma or abscess?

Enhancement of lesion post-contrast

Contrast enhancement of plaques

Leptomeningeal enhancement

Outer enhancing ring surrounding a necrotic center (correct)

Which of the following findings on contrast-enhanced CT scan is characteristic of meningitis?

Contrast enhancement of plaques

Thin linear enhancement of the margins of the ventricles

Leptomeningeal enhancement (correct)

Enhancement of lesion post-contrast

Which of the following is a contraindication for administering contrast media during a CT scan?

Allergy to contrast media

Both allergy to contrast media and compromised renal function (correct)

Presence of metallic objects on the patient

Compromised renal function

Which of the following structures can be visualized on a CT scan of the brain?

All of the above Signup and view all the answers

What is the standard patient positioning for a CT scan of the brain?

Head first, supine with arms by their side Signup and view all the answers

Which of the following is NOT a common indication for performing a head CT scan?

Evaluation of chronic headaches Signup and view all the answers

What is the primary advantage of CT over MRI in the acute setting for head imaging?

Widespread availability and superior evaluation of osseous structures Signup and view all the answers

Which of the following processes does NOT cause alteration of the blood-brain barrier, leading to abnormal contrast enhancement on CT?

Hyperglycemia Signup and view all the answers

Which of the following findings is NOT typical for a brain abscess on a contrast-enhanced CT scan?

Solid intense enhancement of the lesion Signup and view all the answers

What is the typical appearance of a meningioma on a contrast-enhanced CT scan?