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US 12,178,515 B2Granted
Systems and methods for density calibration
AssigneeArthrex, Inc.
InventorsNick Metcalfe, Robert Fergan, David Knopf
Life of this patent
Estimating the term…
Abstract
This disclosure relates to planning systems and methods. The planning systems and methods disclosed herein may be utilized for planning orthopaedic procedures to restore functionality to a joint, and may include one or more calibration objects for calibrating images of patient anatomy.
Claims17
A system for calibrating images of anatomy comprising:
- a calibration object including a plurality of density members formed with a main body, wherein a volume of each of the density members and the main body corresponds to a respective predetermined radiodensity value;
- and
- an imaging system comprising:
- a computing device including a processor coupled to memory, wherein the processor is configured to execute a planning environment including a data module, a display module and a comparison module;
- wherein the data module is configured to receive data corresponding to at least one image of a patient anatomy together with the calibration object from an imaging device;
- wherein the comparison module is configured to determine one or more image gradients, each of the one or more image gradients based on a comparison of a pixel value at a respective position in the at least one image and a pixel value at one or more respective positions along the density members in the at least one image;
- wherein the comparison module is configured to assign a radiodensity value to one or more positions in the at least one image based upon a comparison of the respective one or more image gradients and each respective predetermined radiodensity value;
- and
- wherein the display module is configured to display in a graphical user interface the at least one image and a visual gradient superimposed on the one or more positions according to the assigned radiodensity values, wherein the visual gradient is defined by the predetermined radiodensity values associated with the density members.
6 more elements
A method for calibrating images of anatomy comprising:
- printing a calibration object, wherein the calibration object includes a plurality of density members having radiodensities corresponding to respective predetermined radiodensity values;
- positioning the calibration object in a scan field of an imaging device;
- capturing, by the imaging device, at least one image of a patient anatomy together with the calibration object in the scan field;
- determining one or more image gradients, each of the one or more image gradients based on a comparison of a pixel value at a respective position in the at least one image and a pixel value at one or more respective positions along the density members in the at least one image;
- comparing the respective one or more image gradients to each respective predetermined radiodensity value;
- assigning a radiodensity value to one or more positions in the at least one image based upon the comparing;
- and
- displaying in a graphical user interface at least one indicator relating to the assigned radiodensity values.
5 more elements
Dependencies are inferred from the claim text.