Location of lesion on CT and motor functional outcome of the upper and lower limbs in patients with cerebral infarction

The subjects were 186 patients who were admitted on the day of onset, showed a low density area on CT images within 5 days of onset. Of these patients, 111 had cerebral infarction, and the other 75 had reversible ischemic neurological deficit (RIND). On CT images, the low density area in the slice of corpus callosum splenium (S-1) and that of ventricular body (S-2) was measured, and its relationship with motor functional results at the time of discharge was evaluated. The motor functional level was evaluated using Brunnstrom's stage. The findings are as follows: Discriminant analysis was performed using an explanatory variable of 1 and an error rates of 5% or less. The severity of the low density area could be classified into 4 major types in S-1: I-IV; and into 3 subtypes in S-2: a, b, c. The 186 patients were topographically classified using the major types and subtypes. The severity classification of the low density area on CT images was closely related to the motor functional outcome of the upper and lower limbs. Therefore, this classification is useful for determining the treatment method early after onset. (K.H.)