Automatic Patient Registration for Brain-Shifted Anatomy
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Solution Overview
Problem
In image-guided surgery, particularly for glioma removal, brain shift causes pre-planned images to become unreliable due to anatomical structure modifications, necessitating manual registration processes that are undesirable and inaccurate.
Innovation Solution
A surgical navigation system that uses a registration process to collect intraoperative data, allowing for automatic registration and updating of the patient's position relative to the image space, eliminating the need for manual intervention and enhancing registration accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual registration process is used, then the registration can be completed, but the accuracy is reduced and surgeon time is consumed
Solution Approach 1:
The system performs automatic registration by having the imaging device capture images and the processor automatically determine patient position and update the translation map without requiring surgeon intervention. The system serves itself by autonomously completing the registration process that previously required manual surgeon input.
Solution Approach 2:
The manual mechanical registration process is replaced with an automated imaging and processing system. The imaging device captures images and the processor automatically analyzes them to determine patient position, substituting the manual mechanical adjustment process with an automated optical and computational system.
2Reliability
If pre-planning images are used for guidance, then the surgical plan can be executed, but brain shift causes the images to become unreliable
Solution Approach 1:
The system continuously monitors patient position using intraoperative images and automatically updates the translation map when brain shift is detected. This feedback mechanism allows the system to detect anatomical changes and adjust the registration accordingly, maintaining image reliability despite brain shift.
Solution Approach 2:
The translation map is made dynamic and can be automatically updated during surgery based on detected brain shift. Instead of using a static pre-planning image registration, the system adapts the registration parameters in real-time to account for anatomical structure modifications.
3Extent of automation
If automatic registration is implemented, then surgeon intervention is eliminated and accuracy is enhanced, but system complexity increases
Solution Approach 1:
The imaging device serves multiple functions: it captures pre-planning images, captures intraoperative images for registration, and provides continuous monitoring capability. This multi-functionality reduces the need for separate dedicated registration devices, managing system complexity while enabling automatic registration.
Data Source
AI summary
Disclosed is a system to register a subject, e.g., physical, space to an image space. The registration may be performed automatically by a registration system with a registration device. The registration device may acquire an image of a subject space.