Freehand 3D Ultrasound Calibration Based on Two-Layer Z-Fiducial Phantom

Xiao Yu Wang; Dong Mei Wu; Zhi Jiang Du

doi:10.4028/www.scientific.net/AMR.317-319.638

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 317-319Freehand 3D Ultrasound Calibration Based on...

Freehand 3D Ultrasound Calibration Based on Two-Layer Z-Fiducial Phantom

Abstract:

Spatial calibration is a key technique in Freehand 3D Ultrasound. In this article, a two-layer Z-fiducial phantom with one “Z” shaped fiducial in each layer is used to perform spatial calibration. After freehand scanning above the phantom, the intersections of the scan plane and Z-fiducial plane in B-scans are segmented, and the calibration transformation matrix between the coordinate system of the position sensor receiver and B-scan is calculated using the least-squares fitting algorithm. At last, the calibration result is evaluated on two criteria: precision and accuracy. The result shows that our phantom is convenient as well as reliable for freehand spatial calibration.

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Periodical:

Advanced Materials Research (Volumes 317-319)

Pages:

638-642

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.317-319.638

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Online since:

August 2011

Authors:

Xiao Yu Wang, Dong Mei Wu, Zhi Jiang Du

Keywords:

Calibration, Freehand, Z-Fiducial Phantom

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