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2D-3D registration of CT vertebra volume to fluoroscopy projection: A calibration model assessment (doi:10.1155/2010/806094)

2D-3D registration of CT vertebra volume to fluoroscopy projection: A calibration model assessment (doi:10.1155/2010/806094)
2D-3D registration of CT vertebra volume to fluoroscopy projection: A calibration model assessment (doi:10.1155/2010/806094)
This study extends a previous research concerning intervertebral motion registration by means of 2D dynamic fluoroscopy to obtain a more comprehensive 3D description of vertebral kinematics. The problem of estimating the 3D rigid pose of a CT volume of a vertebra from its 2D X-ray fluoroscopy projection is addressed. 2D-3D registration is obtained maximising a measure of similarity between Digitally Reconstructed Radiographs (obtained from the CT volume) and real fluoroscopic projection. X-ray energy correction was performed. To assess the method a calibration model was realised a sheep dry vertebra was rigidly fixed to a frame of reference including metallic markers. Accurate measurement of 3D orientation was obtained via single-camera calibration of the markers and held as true 3D vertebra position; then, vertebra 3D pose was estimated and results compared. Error analysis revealed accuracy of the order of 0.1 degree for the rotation angles of about 1?mm for displacements parallel to the fluoroscopic plane, and of order of 10?mm for the orthogonal displacement.

1687-6172
8pp
Bifulco, P.
1d59ed38-1ce6-4798-b117-d22712198dda
Cesarelli, M.
1b5a9e20-2a43-474a-b163-77409a10df2f
Allen, R.
9d2d7d1d-d59d-4954-89b7-c48307a208e6
Romano, M.
0c26ba48-a574-4f6a-90bc-7e9bb7058bd1
Fratini, A.
6a699836-ea73-4fd9-814f-3e874201b83a
Pasquariello, G.
1d87a642-1096-454a-85d2-821e9f8d7401
Bifulco, P.
1d59ed38-1ce6-4798-b117-d22712198dda
Cesarelli, M.
1b5a9e20-2a43-474a-b163-77409a10df2f
Allen, R.
9d2d7d1d-d59d-4954-89b7-c48307a208e6
Romano, M.
0c26ba48-a574-4f6a-90bc-7e9bb7058bd1
Fratini, A.
6a699836-ea73-4fd9-814f-3e874201b83a
Pasquariello, G.
1d87a642-1096-454a-85d2-821e9f8d7401

Bifulco, P., Cesarelli, M., Allen, R., Romano, M., Fratini, A. and Pasquariello, G. (2010) 2D-3D registration of CT vertebra volume to fluoroscopy projection: A calibration model assessment (doi:10.1155/2010/806094). EURASIP Journal on Advances in Signal Processing, 2010, 8pp. (doi:10.1155/2010/806094).

Record type: Article

Abstract

This study extends a previous research concerning intervertebral motion registration by means of 2D dynamic fluoroscopy to obtain a more comprehensive 3D description of vertebral kinematics. The problem of estimating the 3D rigid pose of a CT volume of a vertebra from its 2D X-ray fluoroscopy projection is addressed. 2D-3D registration is obtained maximising a measure of similarity between Digitally Reconstructed Radiographs (obtained from the CT volume) and real fluoroscopic projection. X-ray energy correction was performed. To assess the method a calibration model was realised a sheep dry vertebra was rigidly fixed to a frame of reference including metallic markers. Accurate measurement of 3D orientation was obtained via single-camera calibration of the markers and held as true 3D vertebra position; then, vertebra 3D pose was estimated and results compared. Error analysis revealed accuracy of the order of 0.1 degree for the rotation angles of about 1?mm for displacements parallel to the fluoroscopic plane, and of order of 10?mm for the orthogonal displacement.

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Published date: 2010
Additional Information: Authors --> *Bifulco, P., *Cesarelli, M., Allen, R., *Romano, M., *Fratini, A. and *Pasquariello, G. ; Editor --> ; note --> Volume => Article ID 806094;

Identifiers

Local EPrints ID: 80505
URI: http://eprints.soton.ac.uk/id/eprint/80505
ISSN: 1687-6172
PURE UUID: b3933cca-97ef-4b74-8cd9-2d4227e6be73

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Date deposited: 24 Mar 2010
Last modified: 21 Oct 2019 19:40

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