Unilateral hemimegalencephaly and hemiatrophy of brain: principles of computer tomographic differentiation

Unilateral hemimegalencephaly (UHE) and hemiatrophy (HA) of brain are two p athological states of brain completely different in their nature, Neverthel ess, neuroimaging examinations revealed pronounced asymmetry of hemispheres in both cases. This dictates a nesessity of both elaboration and wide usag e of definife objective criteria for differentiation of the alterations abo ve by means of either computer tomography or magneto-resonance tomography, Differential diagnostic criteria for UHE and HA are proposed.