title: The challenge of characterizing emboli by transcranial Doppler sonography.
authors.forename: P D
authors.initials: PD
authors.lastname: Hill
mesh_terms: D005583:Fourier Analysis; D006801:Humans; D002542:Intracranial Embolism and Thrombosis / Q000000981:diagnostic imaging*; D012107:Research Design; D017585:Ultrasonography, Doppler, Transcranial