Use of Transcranial Doppler Ultrasound in Endovascular Repair of a Type B Aortic Dissection Ali Khoynezhad, MD, PhD, Matthew J. Kruse, BS, Carlos E. Donayre, MD, Rodney A. White, MD The Annals of Thoracic Surgery Volume 86, Issue 1, Pages 289-291 (July 2008) DOI: 10.1016/j.athoracsur.2008.01.039 Copyright © 2008 The Society of Thoracic Surgeons Terms and Conditions
Fig 1 (A) Baseline transcranial Doppler ultrasound (TCD) waveform: the upper tracing is recorded from the left middle cerebral artery (MCA) window, whereas the lower tracing is recorded from the right MCA window. (B) Post-endograft deployment TCD waveform demonstrating drop in left MCA flow. (C) Transcranial Doppler ultrasound waveform after repositioning of the stent graft, revealing return to the preoperative pattern. (NicVue version 2.6.8 software with Companion III TCD system [Nicolet Vascular, Madison, WI]). The Annals of Thoracic Surgery 2008 86, 289-291DOI: (10.1016/j.athoracsur.2008.01.039) Copyright © 2008 The Society of Thoracic Surgeons Terms and Conditions
Fig 2 (A) Pre-deployment angiogram. (B) Post-deployment angiogram: normal angiographic findings of an unrestricted common carotid artery orifice after endograft deployment in landing zone II can be deceptive; transcranial Doppler ultrasound confirmed that flow to the middle cerebral artery was in fact impeded. The Annals of Thoracic Surgery 2008 86, 289-291DOI: (10.1016/j.athoracsur.2008.01.039) Copyright © 2008 The Society of Thoracic Surgeons Terms and Conditions