Speckle classification for sensorless freehand 3-D ultrasound.

@article{Hassenpflug2005SpeckleCF,
  title={Speckle classification for sensorless freehand 3-D ultrasound.},
  author={Peter Hassenpflug and Richard W. Prager and Graham M. Treece and Andrew H. Gee},
  journal={Ultrasound in medicine & biology},
  year={2005},
  volume={31 11},
  pages={
          1499-508
        }
}
Despite being a valuable tool for volume measurement and the analysis of complex geometry, the need for an external position sensor is holding up the clinical exploitation of freehand 3-D ultrasound. Some sensorless systems have been developed, using speckle decorrelation for out-of-plane distance estimation, but their accuracy is still not as good as that of sensor-based systems. Here, we examine the widely held belief that accuracy can be improved by limiting the distance measurements to… CONTINUE READING

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