Cardiac Motion Tracking Selective Frame Adjustment
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Solution Overview
Problem
Conventional myocardial motion tracking tools are cumbersome, time-consuming, and inaccurate due to their inability to directly adjust tracked contours in individual frames without re-tracking the entire sequence, leading to resource wastage and incorrect strain analysis results.
Innovation Solution
A processor-configured system that allows for direct adjustment of motion fields and tracked contours in specific frames, enabling user-input corrections to be propagated selectively across frames while maintaining accurate motion tracking and strain analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional image analysis tools allow contour adjustment only in reference frame before propagating to other frames, then the adjustment can be applied consistently across all frames, but the quality control becomes cumbersome and time-consuming requiring re-tracking in every frame
Solution Approach 1:
The system segments the cardiac cine movie into individual frames and allows independent adjustment of tracked contours in specific frames rather than requiring uniform adjustment across all frames. This enables selective quality control where only frames with errors need re-tracking, significantly reducing the time required compared to conventional methods that require re-tracking every frame.
Solution Approach 2:
The system dynamically adjusts the motion fields between frames based on user corrections to specific frames. When a user corrects a contour in a particular frame, the system recalculates motion fields only for affected regions and propagates corrections selectively to subsequent frames, making the quality control process adaptive and efficient rather than rigid and time-consuming.
2Reliability
If conventional tools re-track the contour in every frame based on reference frame even when some frames include no errors, then consistency is maintained, but resource waste increases and strain analysis results may be incorrect
Solution Approach 1:
Instead of re-tracking every frame (excessive action), the system performs partial re-tracking only in frames where errors are identified. The user can select specific frames for correction, and the system applies re-tracking only to those frames and subsequently affected frames, eliminating unnecessary processing and resource waste while maintaining accuracy where needed.
Solution Approach 2:
The system incorporates feedback mechanisms where users can review and correct tracked contours in specific frames. This feedback loop allows for quality control without requiring complete re-tracking of all frames. The system uses the corrections from reviewed frames to update motion fields and propagate accurate data forward, ensuring strain analysis results reflect actual myocardial motion rather than erroneous re-tracking.
3Stability of the object's composition
If the contour is adjusted in a reference frame before propagating to other frames, then the adjustment is applied consistently, but the underlying motion fields between reference frame and other frames remain unchanged
Solution Approach 1:
The system dynamically updates motion fields between frames in response to user corrections. When a contour is adjusted in a specific frame, the system recalculates motion fields for that frame and propagates the updated motion information to subsequent frames, ensuring both contour consistency and motion field accuracy are maintained throughout the cardiac cycle.
Solution Approach 2:
The system changes the motion field parameters between frames based on user corrections to specific frames. By adjusting motion field vectors and displacement values in response to contour corrections, the system maintains accurate motion tracking while preserving the stability of contour adjustments, ensuring both measurement precision and compositional consistency.
Data Source
AI summary
Disclosed herein are systems, methods, and instrumentalities associated with cardiac motion tracking and/or analysis. In accordance with embodiments of the disclosure, the motion of a heart such as an anatomical component of the heart may be tracked through multiple medical images and a contour of the anatomical component may be outlined in the medical images and presented to a user. The user may adjust the contour in one or more of the medical images and the adjustment may trigger modifications of motion field(s) associated with the one or more medical images, re-tracking of the contour in the one or more medical images, and/or re-determination of a physiological characteristic (e.g., a myocardial strain) of the heart. The adjustment may be made selectively, for example, to a specific medical image or one or more additional medical images selected by the user, without triggering a modification of all of the medical images.