High-frequency pulsed Doppler ultrasound: a new tool for microvascular surgery.
A wide variety of surgical procedures now depend on the suture repair of vessels smaller than 1.5 mm. The need persists, however, for a rapid and objective test of patency that is atraumatic. Small-vessel studies indicate that the high-frequency (20 MHz) pulsed Doppler velocimeter is particulary well suited for this task. We have evaluated the ability of such a system to quantitate stenosis produced by partial ligation in a rat model, and report its initial successful use as an intraoperative tool to determine the quality of microvascular anastomoses.
Freed
D
D
Department of Mechanical Engineering and Materials Science, George R. Brown School of Engineering, Rice University, Houston, TX 77005, USA.
Hartley
C J
CJ
Christman
K D
KD
Lyman
R C
RC
Agris
J
J
Walker
W F
WF
D000714:Anastomosis, Surgical / Q000379:methods; D000818:Animals; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D004195:Disease Models, Animal; D005263:Femoral Artery / Q000000981:diagnostic imaging* / Q000601:surgery; D008866:Microsurgery; D016343:Monitoring, Intraoperative / Q000379:methods; D051381:Rats; D017207:Rats, Sprague-Dawley; D018617:Ultrasonography, Doppler, Pulsed; D014656:Vascular Surgical Procedures / Q000379:methods*