Correlation between computerized tomography and transcranial Doppler sonography in patients with speech disorders

We compared the neurological status, computerized tomography (CT), and neurosonological methods (transcranial Doppler sonography - TCD and duplex sonography) findings in 26 right-handed stroke patients with speech disorders. We found a good accordance between CT vascular territory lesions and different types of speech disorders. The interhemispheric asymmetry index was shown to be useful in detecting lesions in small basal arteries branches. We also found a good accordance between CT vascular territory lesions and abnormalities in TCD findings, except for cases with different times of testing. Our results suggest that TCD, as a functional method that shows real-time changes in cerebral hemodynamics, and a morphological method like CT should not be exactly compared. TCD also gives reliable data on the development of collateral circulation.