title: Assessment: transcranial Doppler ultrasonography: report of the Therapeutics and Technology Assessment Subcommittee of the American Academy of Neurology.
authors.forename: Calixto
authors.initials: C
authors.lastname: Machado
mesh_terms: D001926:Brain Death / Q000000981:diagnostic imaging*; D006801:Humans; D017585:Ultrasonography, Doppler, Transcranial