[Transcranial color-coded Doppler sonography: getting started].
Transcranial color Doppler sonography, in contrary to conventional transcranial Doppler ultrasound, allows outlining of the parenchymal structures and visualization of the vessel examined. Angle-corrected blood velocities can be obtained which are closer to in-situ values. In this educational assay, we demonstrate cerebral vascular anatomy using 3-D MR angiographic images of the major cerebral arteries to show their relationship to neighboring structures, the acoustic window, and the ultrasound beam. We describe principles of the examination, and discuss the different types of physiological flow velocity spectra. We show how to identify with color Doppler ultrasonography the main intracranial arterial trunks, and how to avoid pitfalls caused by anatomic variability of their course and location. We draw attention on significant age and sex dependency of blood flow parameters which makes standardization of obtained transcranial Doppler results indispensable for clinical valuable concluding.
Krejza
J
J
Zakładu Radiologii Akademii Medycznej w Białymstoku.
Rudziński
W
W
Mariak
Z
Z
D001783:Blood Flow Velocity; D002560:Cerebrovascular Circulation; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000592:standards; D021621:Imaging, Three-Dimensional; D018615:Ultrasonography, Doppler, Color; D017585:Ultrasonography, Doppler, Transcranial
Przezczaszkowa ultrasonografia dopplerowska z obrazowaniem w kolorze: podstawy metodologii badania.