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Multi-modal registration of speckle-tracked freehand 3D ultrasound to CT in the lumbar spine
- Source :
-
Medical Image Analysis . Apr2012, Vol. 16 Issue 3, p675-686. 12p. - Publication Year :
- 2012
-
Abstract
- Abstract: A method for registration of speckle-tracked freehand 3D ultrasound (US) to preoperative CT volumes of the spine is proposed. We register the US volume to the CT volume by creating individual US “sub-volumes”, each consisting of a small section of the entire US volume. The registration proceeds incrementally from the beginning of the US volume to the end, registering every sub-volume, where each sub-volume contains overlapping images with the previous sub-volume. Each registration is performed by generating simulated US images from the CT volume. As a by-product of our registration, the significant drift error common in speckle-tracked US volumes is corrected for. Results are validated through a phantom study of plastic spine phantoms created from clinical patient CT data as well as an animal study using a lamb cadaver. Results demonstrate that we were able to successfully register a speckle-tracked US volume to CT volume in four out of five phantoms with a success rate of greater than 98%. The final error of the registered US volumes decreases by over 50 percent from the speckle tracking error to consistently below 3mm. Studies on the lamb cadaver showed a mean registration error consistently below 2mm. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 13618415
- Volume :
- 16
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Medical Image Analysis
- Publication Type :
- Academic Journal
- Accession number :
- 73528997
- Full Text :
- https://doi.org/10.1016/j.media.2011.07.006