Consensus Plane Determination for Multi-Electrode Imaging
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Solution Overview
Problem
Current medical imaging procedures for anatomical body parts with non-rotationally symmetrical electrodes, such as those used in deep brain stimulation, face challenges in determining optimal imaging planes, especially when multiple electrodes are implanted, leading to erratic results and increased radiation exposure due to limitations in existing CT and rotational fluoroscopy methods.
Innovation Solution
A computer-implemented method determines a consensus plane for imaging by analyzing patient image data, planned trajectory data, imaging device constraints, and orientation conditions to optimize the orientation of the imaging plane relative to the electrode's longitudinal axis, ensuring optimal image generation while minimizing radiation exposure and avoiding sensitive anatomical regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If CT scanning is used for orientation detection, then imaging capability is provided, but results become erratic when the acute angle between electrode axis and imaging plane normal vector exceeds 40-60 degrees
Solution Approach 1:
The system performs preliminary calculation of the optimal imaging plane orientation based on the planned electrode trajectory and implantation angle before the actual scanning occurs. This allows the imaging plane to be pre-positioned at the correct angle (0-40 degrees relative to the electrode axis) to ensure reliable orientation detection, avoiding the need for postoperative scanning and subsequent radiation exposure.
2Measurement precision
If rotational fluoroscopy is used for orientation detection, then imaging capability is provided, but results become less robust when the acute angle between electrode axis and imaging plane normal vector is less than 30-40 degrees
Solution Approach 1:
The system calculates and specifies the optimal imaging plane orientation in advance based on the planned trajectory, ensuring that the imaging plane will be positioned at the correct angle (0-40 degrees relative to the electrode axis) during scanning. This preliminary planning ensures that the imaging conditions fall within the optimal range for rotational fluoroscopy, maintaining detection robustness.
3Measurement precision
If postoperative scanning is performed to detect electrode orientation, then orientation information is obtained, but radiation is exposed to the patient unnecessarily
Solution Approach 1:
The system performs all necessary orientation detection calculations and imaging plane determinations during the preoperative planning phase, before the actual implantation and scanning occur. By calculating the optimal imaging plane based on the planned trajectory and electrode orientation, the system eliminates the need for postoperative scanning, thereby preventing unnecessary radiation exposure to the patient while still achieving accurate orientation detection.
4Adaptability or versatility
If multiple electrodes are implanted with different orientations, then clinical functionality is improved, but calculation of optimal imaging plane becomes counter-intuitive and complex
Solution Approach 1:
The system merges the orientation detection requirements for multiple electrodes by calculating a single consensus imaging plane that optimally captures all implanted electrodes simultaneously. This consensus plane is determined by analyzing the planned trajectories and implantation angles of all electrodes, finding a common imaging orientation that provides optimal visualization for each electrode, thereby simplifying the overall imaging planning despite the complexity of multiple device orientations.
Data Source
AI summary
A computer-implemented method of determining a consensus plane usable for imaging an anatomical body part with a medical imaging device. The method involves acquiring patient image data that describes an anatomical body part; acquiring planned trajectory data; determining initial imaging plane data of the medical imaging device based on the planned trajectory data; acquiring imaging device constraint data; and acquiring orientation condition data that describes a predetermined condition to be met. The method further includes determining consensus plane data based on the imaging device constraint data and the initial imaging plane data and the orientation condition data; and acquiring avoidance region position data that describes a position of an avoidance region which shall at least substantially not be intersected by imaging radiation during the imaging. The determining consensus plane data is further based on the avoidance region position data.