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Passive Markers for Tracking Surgical Instruments in Real-Time 3-D Ultrasound Imaging

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3 Author(s)
Stoll, J. ; Ultrasound Div., Siemens Healthcare, Mountain View, CA, USA ; Ren, H. ; Dupont, P.E.

A family of passive echogenic markers is presented by which the position and orientation of a surgical instrument can be determined in a 3-D ultrasound volume, using simple image processing. Markers are attached near the distal end of the instrument so that they appear in the ultrasound volume along with the instrument tip. They are detected and measured within the ultrasound image, thus requiring no external tracking device. This approach facilitates imaging instruments and tissue simultaneously in ultrasound-guided interventions. Marker-based estimates of instrument pose can be used in augmented reality displays or for image-based servoing. Design principles for marker shapes are presented that ensure imaging system and measurement uniqueness constraints are met. An error analysis is included that can be used to guide marker design and which also establishes a lower bound on measurement uncertainty. Finally, examples of marker measurement and tracking algorithms are presented along with experimental validation of the concepts.

Published in:

Medical Imaging, IEEE Transactions on  (Volume:31 ,  Issue: 3 )

Date of Publication:

March 2012

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