Skip to main content


Fig. 4 | Critical Ultrasound Journal

Fig. 4

From: Point-of-care transcranial Doppler by intensivists

Fig. 4

Step-wise progression of cerebral circulatory arrest. a CT Head demonstrating diffuse subarachnoid hemorrhage. b Evidence of raised ICP causing decreased diastolic flow as evidenced by blunting of the spectral Doppler signal. c Further progression with diastolic flow reversal as raised ICP prevents forward flow in MCA, and even induces backwards flow. d Biphasic and oscillating flow as evidenced by net zero flow (where systolic and diastolic flow are near equal to each other), indicating the first TCD stage of cerebral circulatory arrest

Back to article page