Known-component 3D-2D registration for quality assurance of spine surgery pedicle screw placement

A. Uneri, T. De Silva, J. W. Stayman, G. Kleinszig, S. Vogt, A. J. Khanna, Z. L. Gokaslan, J. P. Wolinsky, J. H. Siewerdsen

Research output: Contribution to journalArticle

Abstract

A 3D-2D image registration method is presented that exploits knowledge of interventional devices (e.g. K-wires or spine screws - referred to as 'known components') to extend the functionality of intraoperative radiography/fluoroscopy by providing quantitative measurement and quality assurance (QA) of the surgical product. The known-component registration (KC-Reg) algorithm uses robust 3D-2D registration combined with 3D component models of surgical devices known to be present in intraoperative 2D radiographs. Component models were investigated that vary in fidelity from simple parametric models (e.g. approximation of a screw as a simple cylinder, referred to as 'parametrically-known' component [pKC] registration) to precise models based on device-specific CAD drawings (referred to as 'exactly-known' component [eKC] registration). 3D-2D registration from three intraoperative radiographs was solved using the covariance matrix adaptation evolution strategy (CMA-ES) to maximize image-gradient similarity, relating device placement relative to 3D preoperative CT of the patient. Spine phantom and cadaver studies were conducted to evaluate registration accuracy and demonstrate QA of the surgical product by verification of the type of devices delivered and conformance within the 'acceptance window' of the spinal pedicle. Pedicle screws were successfully registered to radiographs acquired from a mobile C-arm, providing TRE 1-4 mm and 99%. Visualization of registered devices relative to surgical planning and the pedicle acceptance window provided potentially valuable QA of the surgical product and reliable detection of pedicle screw breach. 3D-2D registration combined with 3D models of known surgical devices offers a novel method for intraoperative QA. The method provides a near-real-time independent check against pedicle breach, facilitating revision within the same procedure if necessary and providing more rigorous verification of the surgical product.

Original languageEnglish (US)
Pages (from-to)8007-8024
Number of pages18
JournalPhysics in Medicine and Biology
Volume60
Issue number20
DOIs
StatePublished - Sep 30 2015

Fingerprint

Spine
Equipment and Supplies
Anatomic Models
Fluoroscopy
Pedicle Screws
Cadaver
Radiography

Keywords

  • 3D2D image registration
  • image-guided surgery
  • quality assurance
  • spine surgery
  • x-ray fluoroscopy

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Known-component 3D-2D registration for quality assurance of spine surgery pedicle screw placement. / Uneri, A.; De Silva, T.; Stayman, J. W.; Kleinszig, G.; Vogt, S.; Khanna, A. J.; Gokaslan, Z. L.; Wolinsky, J. P.; Siewerdsen, J. H.

In: Physics in Medicine and Biology, Vol. 60, No. 20, 30.09.2015, p. 8007-8024.

Research output: Contribution to journalArticle

Uneri, A. ; De Silva, T. ; Stayman, J. W. ; Kleinszig, G. ; Vogt, S. ; Khanna, A. J. ; Gokaslan, Z. L. ; Wolinsky, J. P. ; Siewerdsen, J. H. / Known-component 3D-2D registration for quality assurance of spine surgery pedicle screw placement. In: Physics in Medicine and Biology. 2015 ; Vol. 60, No. 20. pp. 8007-8024.
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