Calibration Object for Orthopedic Bone Density Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current orthopaedic procedures face challenges in accurately determining bone density and quality, which is crucial for selecting appropriate implants and predicting post-operative bone remodeling, leading to potential complications such as joint instability and pain.
Innovation Solution
A calibration object with a plurality of density members of varying radiodensities is used in conjunction with an imaging system to calibrate images of patient anatomy, allowing for the determination of radiodensity values and visualization of bone density gradients, aiding in surgical planning and post-operative analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional imaging methods are used to assess bone density, then the imaging process is simple and quick, but the accuracy of bone density measurement is insufficient
Solution Approach 1:
A calibration object with known radiodensity values is introduced as an intermediary between the imaging system and the patient anatomy. The calibration object contains multiple density members with predetermined radiodensity values that serve as reference standards. By imaging both the calibration object and patient anatomy together, the system can accurately determine bone density measurements through comparison with the known calibration values, thereby improving measurement precision without requiring complex imaging equipment.
2Measurement precision
If multiple density members with varying radiodensities are used in calibration, then the accuracy of radiodensity determination is improved, but the complexity of the calibration object increases
Solution Approach 1:
The calibration object is segmented into multiple discrete density members, each with a specific predetermined radiodensity value. These density members are arranged within the calibration object structure and can be individually imaged and measured. This segmentation allows the system to determine a range of radiodensity values using a single calibration object, improving measurement precision while keeping the calibration object structure manageable through modular design.
3Measurement precision
If calibration images are used to determine bone density gradients, then the accuracy of implant selection is improved, but the time required for surgical planning increases
Solution Approach 1:
The calibration object is imaged and processed in advance to establish reference radiodensity values and calibration curves before the actual surgical planning. This preliminary calibration allows the system to quickly and accurately determine bone density gradients in patient anatomy images without requiring time-consuming real-time calibration during the surgical planning process, thereby improving measurement precision while minimizing time loss.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enhances the accuracy of bone density assessment, improves implant selection, and allows for better prediction of bone remodeling, reducing the likelihood of complications like periprosthetic fracturing and improving rehabilitation outcomes.
Implementation Method 1
A volume of each of the density members and the main body may correspond to a respective radiodensity
Data Source
AI summary
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.