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US 9,561,004 B2Granted
Automated 3-D orthopedic assessments
AssigneeSectra AB
InventorDaniel Forsberg
Life of this patent
Estimating the term…
Abstract
Systems, methods, computer programs, and circuits can perform automated spinal assessments using a 3-D model and a 3-D patient image data set of the spine which do not rely on vertebral symmetry.
Claims35
A method of providing automated measurements associated with anatomical features of a spine, comprising:
- electronically providing a three dimensional (3-D) model of the spine having substantially naturally shaped vertebrae, with a plurality of landmarks electronically applied to each of the vertebrae;
- obtaining 3-D patient image data of a spine of the patient;
- extracting subvolumes of the 3-D patient image data associated with the spine, respective subvolumes each including at least one vertebra in full and at least one neighboring vertebrae structure or a portion thereof;
- extracting subvolumes of the 3-D model corresponding to the subvolumes of the patient image data;
- electronically registering, subvolume by subvolume, the 3-D model and the 3-D patient image data of the spine;
- then
- electronically transferring the landmarks from the model to the 3-D patient image;
- and
- electronically calculating measurements for one or more vertebrae, including at least one of the following:
- (i) position in x, y and z coordinates (mm), (ii) rotation θx, θy, θz in degrees, and (iii) a local deformity (lateral wedge) value (mm) using the transferred landmarks.
7 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 (3-D) model of the spine having substantially naturally shaped vertebrae, with a plurality of landmarks electronically applied to each of the vertebrae and/or which allows a user to electronically apply landmarks to one or more vertebrae of the 3-D model;
- obtain 3-D patient image data of a spine of the patient;
- extract subvolumes of the 3-D patient image data associated with the spine, respective subvolumes each including at least one vertebra in full and at least one neighboring vertebrae structure or a portion thereof;
- extract subvolumes of the 3-D model corresponding to the subvolumes of the patient image data;
- register, subvolume by subvolume, the 3-D model and the 3-D patient image data of the spine;
- then
- transfer the landmarks from the model to the 3-D patient image;
- and
- calculate measurements for one or more vertebrae, including at least one of the following:
- (i) position in x, y and z coordinates (mm), (ii) rotation θx, θy, θz in degrees, and (iii) a local deformity (lateral wedge) value (mm) using the transferred landmarks.
10 more elements
A system for evaluating spinal patient image data, comprising:
- at least one processor comprising a spinal deformity analysis module;
- and
- at least one display in communication with the at least one processor,
- wherein the spinal deformity analysis module is configured to:
- provide a three dimensional (3-D) model of the spine having substantially naturally shaped vertebrae to the display, the 3-D model (i) is configured to allow a user to electronically apply landmarks to one or more vertebrae of the 3-D model and/or (ii) has a plurality of landmarks electronically pre-applied to each of the vertebrae of the 3-D model;
- obtain 3-D patient image data of a spine of the patient;
- register the 3-D model and the 3-D patient image data of the spine;
- then
- transfer the landmarks from the model to the 3-D patient image;
- calculate measurements for the vertebrae, including a plurality of the following:
- (i) position in x, y and z coordinates (mm), (ii) rotation θx, θy, θz in degrees, and (iii) a local deformity (lateral wedge) value (mm) using the transferred landmarks;
- and
- generate a plurality of graphs of curvature of the spine to the display using the calculated measurements.
10 more elements
A computer program product for analyzing image data sets, the computer program product comprising:
- a non-transitory computer readable storage medium having computer readable program code embodied in the medium, the computer-readable program code comprising:
- computer readable program code configured to:
- provide a three dimensional (3-D) model of the spine having substantially naturally shaped vertebrae, with a plurality of landmarks electronically applied to each of the vertebrae;
- obtain 3-D patient image data of a spine of the patient;
- extract subvolumes of the 3-D patient image data associated with the spine, respective subvolumes each including at least one vertebra in full and at least one neighboring vertebrae structure or a portion thereof;
- extract subvolumes of the 3-D model corresponding to the subvolumes of the patient image data;
- register, subvolume by subvolume, the 3-D model and the 3-D patient image data of the spine;
- then
- transfer the landmarks from the model to the 3-D patient image;
- and
- calculate measurements for one or more vertebrae, including at least one of the following:
- (i) position in x, y and z coordinates (mm), (ii) rotation θx, θy, θz in degrees, and (iii) a local deformity (lateral wedge) value (mm) using the transferred landmarks.
9 more elements
Dependencies are inferred from the claim text.