Definition of gyral in US English:



  • Relating to a gyrus or gyri.

    • ‘Three-dimensional mapping of gyral shape and cortical surface asymmetries in schizophrenia: Gender effects.’
    • ‘MRI findings early in the course of infection include gyral swelling or high signal intensity on weighted images, followed by extension of the infection, hemorrhage, and increasing areas of contrast enhancement.’
    • ‘Several groups with an abnormal gyral pattern: microcephaly associated with simplified gyral pattern, lissencephaly, microlissencephaly, agyria, pachygyria, polymicrogyria or some cortical dysplasias.’
    • ‘Therefore, a knowledge of gyral patterns of the central area is essential not only for the resective epilepsy surgery, but also for the successful removal of a variety of lesions in the central area.’
    • ‘Infraoptic course of anterior cerebral arteries associated with abnormal gyral segmentation.’