113The distinction between intracerebral hematoma and cerebral infarction can be made only by CT.Three observations in this study indicate complementary roles for RN brain imaging and CT in evaluation of patients with stroke. (1) While the percentages of abnormalities on both tests were comparable in recent infarction, the results in the same patients were not identical in 55% of the cases.(2) In patients with a recent and an old stroke a positive RN uptake would be the result of the recent insult, while on CT both types of lesions show similar abnormalities. (3) Hemodynamic changes on rapid sequence studies were demonstrated in 38% of 18 patients on whom the test was done.