White Matter of the Cerebellum Demonstrated by Computed Tomography: Normal Anatomy and Physical Principles

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Abstract
Although computed tomography (CT) delineation of normal white matter of the cerebral hemispheres has been well documented, there has been no description of white matter within the cerebellum. Through the use of phantom studies, CT number correlations between cerebellum and cerebral hemispheres, and anatomic correlation with in vitro specimens, the ability to visualize cerebellar white matter in humans is demonstrated. Thin sections decrease volume averaging and enable consistent imaging of these structures. Size and shape of the corpus medullaris on CT scan may vary with the scan angle and level of section. Representative examples of various normal appearances are illustrated.