Planning, guidance, and quality assurance of pelvic screw placement using deformable image registration

J. Goerres, A. Uneri, M. Jacobson, B. Ramsay, T. De Silva, M. Ketcha, R. Han, A. Manbachi, S. Vogt, G. Kleinszig, J. P. Wolinsky, G. Osgood, J. H. Siewerdsen

Research output: Contribution to journalArticle

Abstract

Percutaneous pelvic screw placement is challenging due to narrow bone corridors surrounded by vulnerable structures and difficult visual interpretation of complex anatomical shapes in 2D x-ray projection images. To address these challenges, a system for planning, guidance, and quality assurance (QA) is presented, providing functionality analogous to surgical navigation, but based on robust 3D-2D image registration techniques using fluoroscopy images already acquired in routine workflow. Two novel aspects of the system are investigated: automatic planning of pelvic screw trajectories and the ability to account for deformation of surgical devices (K-wire deflection). Atlas-based registration is used to calculate a patient-specific plan of screw trajectories in preoperative CT. 3D-2D registration aligns the patient to CT within the projective geometry of intraoperative fluoroscopy. Deformable known-component registration (dKC-Reg) localizes the surgical device, and the combination of plan and device location is used to provide guidance and QA. A leave-one-out analysis evaluated the accuracy of automatic planning, and a cadaver experiment compared the accuracy of dKC-Reg to rigid approaches (e.g. optical tracking). Surgical plans conformed within the bone cortex by 3-4 mm for the narrowest corridor (superior pubic ramus) and >5 mm for the widest corridor (tear drop). The dKC-Reg algorithm localized the K-wire tip within 1.1 mm and 1.4° and was consistently more accurate than rigid-body tracking (errors up to 9 mm). The system was shown to automatically compute reliable screw trajectories and accurately localize deformed surgical devices (K-wires). Such capability could improve guidance and QA in orthopaedic surgery, where workflow is impeded by manual planning, conventional tool trackers add complexity and cost, rigid tool assumptions are often inaccurate, and qualitative interpretation of complex anatomy from 2D projections is prone to trial-and-error with extended fluoroscopy time.

Original languageEnglish (US)
Pages (from-to)9018-9038
Number of pages21
JournalPhysics in Medicine and Biology
Volume62
Issue number23
DOIs
StatePublished - Nov 13 2017

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Fluoroscopy
Equipment and Supplies
Workflow
Bone and Bones
Atlases
Tears
Cadaver
Orthopedics
Anatomy
X-Rays
Costs and Cost Analysis

Keywords

  • 3D-2D registration
  • atlas registration
  • pelvic surgery
  • percutaneous screw
  • quality assurance
  • surgical navigation
  • surgical planning

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

Cite this

Planning, guidance, and quality assurance of pelvic screw placement using deformable image registration. / Goerres, J.; Uneri, A.; Jacobson, M.; Ramsay, B.; De Silva, T.; Ketcha, M.; Han, R.; Manbachi, A.; Vogt, S.; Kleinszig, G.; Wolinsky, J. P.; Osgood, G.; Siewerdsen, J. H.

In: Physics in Medicine and Biology, Vol. 62, No. 23, 13.11.2017, p. 9018-9038.

Research output: Contribution to journalArticle

Goerres, J. ; Uneri, A. ; Jacobson, M. ; Ramsay, B. ; De Silva, T. ; Ketcha, M. ; Han, R. ; Manbachi, A. ; Vogt, S. ; Kleinszig, G. ; Wolinsky, J. P. ; Osgood, G. ; Siewerdsen, J. H. / Planning, guidance, and quality assurance of pelvic screw placement using deformable image registration. In: Physics in Medicine and Biology. 2017 ; Vol. 62, No. 23. pp. 9018-9038.
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