Surgical Registration Model Using Marker Pose Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing navigation systems in surgery face challenges in registering anatomical elements when they are partially blocked by radiopaque objects, which can distort or obscure the anatomical features in images.
Innovation Solution
A system that uses a navigation system to track the pose of a marker coupled to an object, identifies the marker, and inputs pose information, object identification, and image data into a registration model to register anatomical elements, even when partially blocked by radiopaque objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radiopaque objects are used during surgical procedures, then visibility and tracking of surgical instruments are improved, but anatomical elements become obscured or distorted in images
Solution Approach 1:
The system segments the image data by identifying and separating the radiopaque object from the anatomical elements. The processor detects the radiopaque object's position and characteristics, then excludes or masks those regions when performing registration, allowing anatomical features to be registered without interference from the radiopaque object's distortion or obscuration.
Solution Approach 2:
The system extracts and removes the radiopaque object's influence from the image data used for registration. By identifying the radiopaque object's location and characteristics, the system extracts only the relevant anatomical information while excluding the distorted or blocked regions, enabling accurate registration despite the presence of radiopaque objects.
2Productivity
If registration is performed using all available image data, then registration speed is improved, but accuracy decreases due to inclusion of radiopaque objects
Solution Approach 1:
The system dynamically adjusts the registration process by first performing a preliminary registration using all available image data to establish an initial alignment, then iteratively refining the registration by excluding radiopaque object regions. This dynamic approach allows the system to maintain registration speed while progressively improving accuracy by removing harmful influences.
Solution Approach 2:
The system implements feedback by continuously evaluating the quality of registration and identifying regions affected by radiopaque objects. Based on this feedback, the system adjusts the registration parameters and excludes problematic regions in subsequent iterations, thereby improving accuracy without significantly compromising registration speed.
Data Source
AI summary
Systems and methods for registering one or more anatomical elements are provided. The system may comprise an imaging device and a navigation system configured to track a pose of a marker coupled to an object and configured to identify the marker. A first image may be received from a surgical plan. Pose information describing the pose of the marker and a marker identification of the marker may be obtained from the navigation system. An object identification based on the marker identification may be retrieved from a database. Image data of a second image depicting an anatomical element and the object may be obtained from the imaging device. The image data, the pose information, and the object identification may be input into a registration model. The registration model may be configured to register the anatomical element to the first image based on the pose information and the object identification.