Cross-Wire Calibration for Freehand 3D Ultrasonography: Measurement and Numerical Issues
Alternativní metriky PlumXhttp://hdl.handle.net/11012/58005
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3D freehand ultrasound is an imaging technique, which is gradually finding clinical applications. A position sensor is attached to a conventional ultrasound probe, so that B-scans are acquired along with their relative locations. This allows the B-scans to be inserted into a 3D regular voxel array, which can then be visualized using arbitrary-plane slicing, and volume or surface rendering. A key requirement for correct reconstruction is the calibration: determining the position and orientation of the B-scans with respect to the position sensor's receiver. Following calibration, interpolation in the set of irregularly spaced B-scans is required to reconstruct a regular-voxel array. This text describes a freehand measurement of 2D ultrasonic data, an approach to the calibration problem and several numerical issues concerned with the calibration and reconstruction.
Zdrojový dokumentRadioengineering. 2005, vol. 14, č. 2, s. 27-32. ISSN 1210-2512
- 2005/2