3D Anatomical Landmark Positioning With Relief-Aware Spot Indicators
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Solution Overview
Problem
Existing surgical planning methods fail to accurately position landmarks on 3D patient models, failing to account for variations in patient anatomy and procedural objectives, leading to inefficiencies and risks during surgeries.
Innovation Solution
A computer-implemented method using advanced imaging, computational algorithms, and user-friendly interfaces for precise landmark positioning on 3D patient models, incorporating automated rendering, relief visualization, and segmentation techniques, along with machine learning algorithms to enhance surgical planning and intraoperative guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional manual techniques or simplistic digital tools are used for landmark identification, then the process is simple and easy to operate, but the positioning accuracy and reliability of landmark identification deteriorates
Solution Approach 1:
The patent introduces an automated rendering system with spot indicators as an intermediary between the user and the 3D model. The spot indicator provides visual feedback about surface topology and depth variations, mediating the user's landmark positioning task by highlighting anatomical features that would otherwise be difficult to perceive in a standard 3D rendering.
Solution Approach 2:
The patent employs color changes in the spot indicator to encode depth and relief information. The indicator's appearance changes based on the local surface topology, providing intuitive visual cues about anatomical landmarks through color variations that reflect underlying structural features.
2Measurement precision
If automated rendering techniques and relief visualization are implemented, then landmark identification accuracy improves, but the ease of operation and user interface simplicity deteriorates
Solution Approach 1:
The system performs automated rendering and relief visualization without requiring manual user configuration. The spot indicator automatically adapts its appearance based on the local surface topology, and the system self-adjusts the visualization parameters to highlight anatomical features, reducing the cognitive load and operational complexity for the user.
Solution Approach 2:
The system pre-computes the surface topology and prepares the spot indicator visualization before the user begins landmark positioning. This preliminary action ensures that when the user interacts with the 3D model, the relief enhancement is already optimized for the current view, eliminating the need for manual adjustment during the positioning task.
3Manufacturing precision
If submillimeter accuracy in landmark positioning is achieved, then surgical planning precision improves, but the time required for the positioning process and computational resources increases
Solution Approach 1:
The patent replaces manual mechanical positioning methods with an automated computational system. The spot indicator provides real-time visual feedback that guides the user to the precise landmark location, substituting iterative manual adjustment with a computationally-driven visual guidance system that achieves submillimeter accuracy more efficiently.
Solution Approach 2:
The spot indicator implements a feedback mechanism that continuously provides visual information about the user's positioning accuracy. As the user moves the landmark indicator, the spot indicator's appearance changes to reflect the local surface topology, providing immediate feedback that guides the user to the correct anatomical feature and confirms when submillimeter accuracy has been achieved.
Data Source
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AI summary
The present invention relates to a device and a method for assisting a user (4) positioning at least one graphical landmark within a three-dimensional - 3D - model by means of a user graphical interface (2) and a controller (6) configured so that the user (4) interacts with said user graphical interface (2), said 3D model being obtained from at least one 3D image and being representative of at least one portion of a patient's body and comprising at least one anatomical element of interest on which the at least one graphical landmark is to be positioned.