Image-Based Analysis of Implantable Medical Device Lead Positioning
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Solution Overview
Problem
Implantable medical devices (IMDs) face challenges in accurately determining lead migration over time, which can affect the efficacy of electrical stimulation therapy due to changes in lead positioning relative to anatomical structures, making it difficult for medical professionals to optimize therapy parameters without precise imaging analysis.
Innovation Solution
An image processing device is used to compare base and comparative images of IMD leads, allowing users to select and reconstruct segments to visualize lead migration and optimize therapy parameters by normalizing image coordinates and overlaying corresponding segments from different imaging modalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If medical professionals manually compare images of implanted leads, then they can identify lead migration, but the process is time-consuming and imprecise
Solution Approach 1:
The patent creates a digital copy of the implanted leads through image processing. The system captures images of the leads at different time points and generates a virtual representation that can be automatically compared, eliminating the need for manual physical comparison while maintaining detection precision.
Solution Approach 2:
The patent replaces manual mechanical comparison processes with automated computational algorithms. The system uses image processing software to automatically align, compare, and analyze lead positions across multiple images, substituting human manual analysis with automated digital processing that is both faster and more precise.
2Loss of information
If different imaging modalities are used to acquire images, then comprehensive information can be obtained, but coordinate normalization becomes difficult
Solution Approach 1:
The patent introduces a coordinate normalization layer as an intermediary between different imaging modalities. The system processes images from various modalities (fluoroscopic, tensor, etc.) and transforms them into a common coordinate system, allowing comprehensive information integration while simplifying comparison through standardized coordinates.
Solution Approach 2:
The patent changes the parameter representation of images by normalizing coordinates across different imaging modalities. The system adjusts and standardizes the coordinate parameters from various imaging sources to a unified reference frame, enabling direct comparison while preserving the comprehensive information from all modalities.
3Reliability
If lead migration is not detected accurately, then therapy parameters cannot be optimized, but comprehensive imaging analysis increases complexity
Solution Approach 1:
The patent segments the imaging analysis process into distinct functional modules: image acquisition, coordinate normalization, lead detection, migration analysis, and therapy optimization. This segmentation reduces overall system complexity by breaking down the complex task into manageable, independent processing stages that can be optimized separately.
Solution Approach 2:
The patent implements a feedback loop where imaging analysis results directly inform therapy parameter adjustments. The system continuously monitors lead positions, detects migration, and provides feedback to optimize therapy parameters, creating a closed-loop system that improves reliability while managing complexity through automated decision-making.
Data Source
AI summary
In general, aspects of this disclosure describe example techniques which may be used to identify lead migration or estimate dissemination of electrical stimulation therapy through tissue of a patient. For example, an image processing device may receive a selection of a segment in a first image of patient implanted with one or more leads. The image processing device may reconstruct the selected segment in the first image with a corresponding segment in a second image. With the reconstructed segment, a user or the image processing device may be able to identify lead migration or estimate dissemination of electrical stimulation therapy through tissue of the patient.