Name
Title | ||
|---|---|---|
3D-2D image registration in virtual long-film imaging - application to spinal deformity correction. |
Abstract | ||
|---|---|---|
Purpose. Intraoperative 2D virtual long-film (VLF) imaging is investigated for 3D guidance and confirmation of the surgical product in spinal deformity correction. Multi-slot-scan geometry (rather than a single-slot "topogram") is exploited to produce parallax views of the scene for accurate 3D colocalization from a single radiograph. Methods. The multi-slot approach uses additional angled collimator apertures to form fan-beams with disparate views (parallax) of anatomy and instrumentation and to extend field-of-view beyond the linear motion limits. Combined with a knowledge of surgical implants (pedicle screws and/or spinal rods modeled as "known components"), 3D-2D image registration is used to solve for pose estimates via optimization of image gradient correlation. Experiments were conducted in cadaver studies emulating the system geometry of the O-arm (Medtronic, Minneapolis MN). Results. Experiments demonstrated feasibility of multi-slot VLF and quantified the geometric accuracy of 3D-2D registration using VLF acquisitions. Registration of pedicle screws from a single VLF yielded mean target registration error of (2.0 +/- 0.7) mm, comparable to the accuracy of surgical trackers and registration using multiple radiographs (e.g., AP and LAT). Conclusions. 3D-2D registration in a single VLF image offers a promising new solution for image guidance in spinal deformity correction. The ability to accurately resolve pose from a single view absolves workflow challenges of multiple view registration and suggests application beyond spine surgery, such as reduction of long-bone fractures. |
Year | DOI | Venue |
|---|---|---|
2019 | 10.1117/12.2513679 | Proceedings of SPIE |
Keywords | DocType | Volume |
Intraoperative imaging,image-guided surgery,linear slot-scanning radiography,3D-2D image registration | Conference | 10951 |
ISSN | Citations | PageRank |
0277-786X | 0 | 0.34 |
References | Authors | |
0 | 7 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ali Uneri | 1 | 113 | 23.38 |
| x zhang | 2 | 5 | 4.26 |
| J. Webster Stayman | 3 | 33 | 4.37 |
| P. A. Helm | 4 | 0 | 0.68 |
| G. M. Osgood | 5 | 0 | 0.68 |
| Nicholas Theodore | 6 | 0 | 1.69 |
| J H Siewerdsen | 7 | 100 | 28.22 |