[Transcranial Doppler in the neurological practice].

Transcranial Doppler (TCD) was described in 1982 by Rune Aaslid and introduced in Brazil in 1992 by Roberto Hirsh in the University of São Paulo. Since the acquisition of TCD by Neurology Division of Hospital de Clínicas of Universidade Federal do Paraná (HC-UFPR) in 2001, the knowledge about TCD clinical utility has been increasing for diagnosis, follow-up and management of patients with cerebrovascular diseases. The objective of this study is to describe the current TCD indications and medical specialties indicators in our hospital. Although guidelines as published by the American Academy of Neurology establish values for TCD study with methods specificity and sensibility, we realize that the utility in our center depends on our efforts to show methods beneficial in various clinical settings.