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Endoscopic Doppler for detecting vessels in closed chest bypass grafting
V Falk1, J I Fann, J Grünenfelder
1Department of Cardiothoracic Surgery, Stanford University Medical Center, California, USA. falv@medizin.uni-leizpig.de
The Heart Surgery Forum
|February 15, 2001
Abstract:
A new method of endoscopic ultrasonography during endoscopic bypass grafting is described. Using a 7.5 MHz ultrasonic catheter (AcuNav, Acuson, Mountain View, CA) that was introduced through a 5mm port and manipulated by robotically enhanced endoscopic instruments, detection of the internal thoracic artery (ITA) and the left anterior descending (LAD) artery was possible through layers of fat and muscle in a canine model.