Fig. 2

Transcranial sonographic images from the Triplex Doppler study of the cerebral and basilar arteries of clinically healthy canines. (A) Middle cerebral artery (MCA), transtemporal window. Doppler adjustments Color Doppler gain = 66% and PRF = 4.3 kHz., (B) Basilar artery (BA), suboccipital window; Color Doppler gain = 60%, PRF = 1.9 KHz