Fig. 2From: Perioperative stroke during carotid endarterectomy: benefits of multimodal neuromonitoring - a case reportPerioperative transcranial doppler (TCD) signal of the left middle cerebral artery. A Before dissection, mean velocity 70 cm/s. B During dissection, mean velocity 13 cm/s (> 80% decrease compared to the start of procedure)Back to article page