Hyperspectral Imaging for Cardiac Ablation Lesion Visualization
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Solution Overview
Problem
Current methods for treating atrial fibrillation via catheter-based ablation lack real-time visualization of tissue damage, leading to incomplete lesion formation and high recurrence rates due to gaps in ablation lines, necessitating multiple procedures and increased healthcare costs.
Innovation Solution
The use of hyperspectral imaging to distinguish between ablated and unablated atrial tissue based on spectral differences, enabling real-time visualization of lesion boundaries, gap identification, and scar tissue detection to improve ablation procedure efficiency and reduce recurrence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If catheter-based ablation is performed without real-time visualization, then the procedure can be performed with current technology, but the lesion formation is incomplete and gaps occur in ablation lines
Solution Approach 1:
The patent uses optical imaging to detect color changes and spectral differences in tissue during ablation. The system captures images at multiple wavelengths to identify spectral signatures that indicate tissue damage, allowing real-time visualization of lesion formation and gap detection without requiring physical tissue disruption.
Solution Approach 2:
The patent introduces an optical imaging system as an intermediary between the ablation catheter and the surgeon. This intermediary provides real-time feedback about tissue damage by detecting optical properties changes, enabling the surgeon to see lesion formation and identify gaps without direct visual observation of the ablation site.
2Reliability
If multiple ablation procedures are performed to ensure complete isolation, then recurrence rates may be reduced, but healthcare costs and patient exposure to procedure risks increase
Solution Approach 1:
The patent implements real-time feedback during the ablation procedure by continuously capturing and analyzing optical images of the tissue. The system provides immediate information about lesion formation quality and gap presence, allowing the surgeon to adjust the ablation process to ensure complete isolation in a single procedure, thereby reducing the need for repeat procedures.
Solution Approach 2:
The patent enables preliminary assessment of tissue damage during the ablation procedure itself. By detecting optical changes before the procedure is complete, the system allows the surgeon to ensure adequate lesion formation and gap closure during the initial procedure, preventing the need for subsequent procedures.
3Ease of operation
If ablation lesions are created without real-time monitoring, then the procedure is simpler to perform, but the extent of tissue damage cannot be determined and gaps cannot be identified
Solution Approach 1:
The patent enables the tissue to reveal its own state through optical properties. The tissue's natural optical characteristics change in response to ablation damage, and the system captures these self-revealed changes without requiring external intervention or complex manual assessment, maintaining procedural simplicity while providing precise measurement.
Solution Approach 2:
The patent replaces manual visual assessment and mechanical measurement methods with optical imaging and spectral analysis. This substitution automates the detection and quantification of tissue damage, providing precise measurement without adding manual complexity to the procedure.
4Loss of information
If hyperspectral imaging is implemented during ablation, then real-time lesion visualization and gap identification are achieved, but the device complexity and procedural time increase
Solution Approach 1:
The patent segments the optical imaging process into discrete spectral bands or wavelengths that can be captured and analyzed separately. By dividing the complex hyperspectral data into manageable spectral components, the system reduces processing complexity while maintaining the ability to detect tissue damage through spectral differences.
Solution Approach 2:
The patent integrates the optical imaging system with the existing ablation catheter platform, allowing the same system to perform both ablation and imaging functions. This multi-functionality reduces overall device complexity by combining multiple functions into a single integrated platform rather than requiring separate independent systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for precise visualization and quantification of lesions and gaps during procedures, potentially reducing the number of ablation surgeries needed and minimizing tissue injury, thereby decreasing recurrence rates and healthcare costs associated with atrial fibrillation treatment.
Implementation Method 1
illuminating at one or more illumination wavelengths a surface of tissue having an ablation lesion; collecting a spectral data set comprising spectral images of the illuminated tissue acquired at multiple spectral bands
Implementation Method 2
distinguishing between the ablation lesion and an unablated tissue based on one or more spectral differences between the ablation lesion and unablated tissue
Data Source
Figure 1A
Figure 1B
Figure 2A~2C
AI summary
Systems and methods for hyperspectral analysis of cardiac tissue are provided. In some embodiments, a method for visualizing ablation lesions includes illuminating at one or more illumination wavelengths a surface of tissue having an ablation lesion; collecting a spectral data set comprising spectral images of the illuminated tissue acquired at multiple spectral bands each at one or more acquisition wavelengths; distinguishing between the ablation lesion and an unablated tissue based on one or more spectral differences between the ablation lesion and unablated tissue; and creating a composite image of the tissue showing the ablation lesion and the unablated tissue.