Freehand ultrasound imaging systems and methods providing position quality feedback
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United States of America Patent
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Feb 20, 2018
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app pub date -
May 6, 2010
filing date -
May 20, 2009
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Abstract
An ultrasound system has an ultrasound transducer equipped with a position marker and a needle equipped with a position marker. The position markers allow the position and orientation of the transducer and needle to be determined. A display depicts an ultrasound image acquired via the transducer and a graphical element representative of a projection of the longitudinal axis of the needle onto a plane of the ultrasound image. The quality of the position and orientation information from the position markers is monitored, and when quality is below a quality threshold the display indicates this fact.
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