CT scans have limited sensitivity to detect tumors in which brain region?

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Multiple Choice

CT scans have limited sensitivity to detect tumors in which brain region?

CT scans excel at rapidly identifying many brain abnormalities, especially in the supratentorial regions, but they have limited sensitivity for tumors in the posterior fossa. The area sits next to dense skull base bones, and bone-related artifacts from the temporal bones and skull base cause beam-hardening and streak artifacts that obscure the cerebellum and brainstem. Those structures are also small and tightly packed, making subtle lesions hard to see on CT. MRI, with its superior soft-tissue contrast and lack of bone-induced distortion, is much better for detecting posterior fossa tumors.

CT scans excel at rapidly identifying many brain abnormalities, especially in the supratentorial regions, but they have limited sensitivity for tumors in the posterior fossa. The area sits next to dense skull base bones, and bone-related artifacts from the temporal bones and skull base cause beam-hardening and streak artifacts that obscure the cerebellum and brainstem. Those structures are also small and tightly packed, making subtle lesions hard to see on CT. MRI, with its superior soft-tissue contrast and lack of bone-induced distortion, is much better for detecting posterior fossa tumors.

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