1. Transcranial Doppler ultrasonography: A reliable method of monitoring pulsatile flow during cardiopulmonary bypass in infants and young children 
Ashley Rogerson, BS, Yulong Guan, MD, Stephen J. Kimatian, MD, Allen Kunselman, MA, J. Brian Clark, MD, John L. Myers, MD, Akif Ündar, PhD 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 139, Issue 4, Pages e80-e82 (April 2010)
DOI: /j.jtcvs
Copyright © 2010 The American Association for Thoracic Surgery Terms and Conditions

2. Figure 1
A, PI in CPB tubing. B, PI in the right MCA. PI, Pulsatility index; CPB, cardiopulmonary bypass; MCA, middle cerebral artery.
The Journal of Thoracic and Cardiovascular Surgery  , e80-e82DOI: ( /j.jtcvs )
Copyright © 2010 The American Association for Thoracic Surgery Terms and Conditions