1. Bogdahn U, Becker G.Transcranial color Doppler imaging.Neurosonology1996; 19:214-220.
2. Hemodynamic effects of microbubble echo contrast
3. Schlief R.Galactose-based echo contrast agents in diagnostic ultrasound.Echoenhancers and transcranial color duplex sonographyBerlin, Germany: Blackwell Science, 1998; 157-168.
4. Zar JH.Paired-sample hypotheses.Biostatistical analysis2nd ed. Englewood Cliffs, NJ: Prentice-Hall, 1984; 150-162.
5. Furuhata H, Kato S, Okamura T.Noninvasive measurement of intracranial blood flow by transcranial tomography (TCT).Proceedings of the 51st conference of the Jpn Soc Ultrasound Med.1987; 549-550.