Ultrasonic evaluation of venous structures
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United States of America Patent
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Jan 12, 2016
Grant Date -
Jan 16, 2014
app pub date -
Sep 10, 2013
filing date -
Jun 2, 2006
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Abstract
Provided are methods and systems for detecting a maturing arterio-venous fistula comprising a vein. An exemplary method comprises determining a wall thickness of the fistula and a lumen diameter of the fistula vein using a high frequency ultrasound imaging system. A blood pressure of the subject is determined. A circumferential vessel wall stress is determined from the measured blood pressure, the wall thickness of the fistula and a determined radius of the measured diameter of the fistula. The determined circumferential vessel stress is compared to a predetermined threshold stress to determine if the fistula is mature.
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