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US 2019/0046269 A1Published application
Automated planning systems for pedicle screw placement and related methods
AssigneeSectra AB
InventorsAnders Hedblom, Rolf Scheiderbauer, Stefan Lindholm, Ludvig Mangs
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Abstract
Systems, methods and circuits can perform automated pedicle placement planning on 3D image data sets of the spine using global and local coordinate axes systems and ray casting to identify a center of the vertebral foramen and a center of a solid vertebral body for the local coordinate axis system.
Claims22
An automated or semi-automated method of planning for placement of pedicle screws, comprising:
- providing a three dimensional (3D) image of a target vertebra of a patient;
- electronically defining a first coordinate axis system using a first axis extending in an anatomical right to left direction across a target vertebra;
- electronically ray casting the 3D image of the target vertebra in an anterior direction that is anterior to the first axis;
- electronically identifying a vertebral foramen (VF) based at least in part on the ray casting;
- electronically calculating a second coordinate axis system aligned with an orientation of the VF;
- and
- electronically identifying placement and sizing of at least one pedicle screw using the second coordinate axis system.
4 more elements
A clinician workstation comprising:
- at least one display;
- and
- a circuit in communication with the at least one display, the circuit comprising or in communication with at least one processor configured to:
- provide a three dimensional (3D) image of a target vertebra of a patient;
- define a first coordinate axis system using a first axis extending in an anatomical right to left direction across a target vertebra;
- ray cast the 3D image of the target vertebra in an anterior direction that is anterior to the first axis;
- identify a vertebral foramen (VF) based at least in part on the ray casting;
- calculate a second coordinate axis system aligned with an orientation of the VF;
- and
- identify placement and sizing of at least one pedicle screw using the second coordinate axis system.
7 more elements
Dependencies are inferred from the claim text.