CORRECTION OF PROBE PRESSURE ARTIFACTS IN FREEHAND 3D ULTRASOUND - INITIAL RESULTS
G.M.Treece, R.W.Prager, A.H.Gee and L.Berman.
We present an algorithm which combines non-rigid image-based registration and conventional position sensing to correct probe-pressure-induced registration errors in freehand three-dimensional (3D) ultrasound volumes. The local accuracy of image-based registration enables the accurate freehand acquisition of high resolution (>15 MHz) 3D ultrasound data, opening the way for 3D musculoskeletal examinations. External position sensor readings guarantee the large-scale positional accuracy of the data. The algorithm is shown to increase both the clarity and accuracy of reslices through in-vivo volumetric data sets.
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