MPR Slice Selection for Catheter Visualization in 3D Ultrasound
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Solution Overview
Problem
The visualization of an interventional tool, particularly a catheter, in multi-planar reformatting (MPR) images derived from 3D ultrasound is challenging due to image artifacts, limited views, and out-of-plane issues, making it difficult to accurately localize the tool tip and visualize its surrounding neighborhood during interventional cardiac procedures.
Innovation Solution
A system that includes a 3D ultrasound imaging system, an MPR imaging module, and image tracking points on the interventional tool, allowing for real-time localization of the tool tip and precise generation of MPR views by identifying multiple image tracking points and generating MPR images with these points as origins, which can be integrated with X-ray imaging for enhanced visualization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If 2D US or 3D US is used for visualizing the interventional tool, then real-time motion information is provided, but image artifacts and limited views make it difficult to accurately localize the tool tip
Solution Approach 1:
The patent transitions from 2D ultrasound imaging to 3D volume imaging, enabling multi-planar reformatting (MPR) views that provide comprehensive spatial context. This dimensional enhancement allows accurate localization of the tool tip by visualizing it in three orthogonal planes simultaneously, resolving the out-of-plane ambiguity inherent in 2D imaging while maintaining real-time capability.
Solution Approach 2:
The patent segments the 3D ultrasound volume into multiple orthogonal planar views (axial, sagittal, coronal planes). By displaying the tool tip position across these segmented views, the system provides precise localization information that overcomes the limited single-view perspective of conventional 2D imaging, achieving both real-time updates and high measurement precision.
2Ease of operation
If conventional 2D US or 3D US views are used, then the interventional tool is visualized, but out-of-plane issues cause the tool tip to go in and out of the image
Solution Approach 1:
The patent employs 3D volume imaging with multi-planar reformatting to eliminate out-of-plane information loss. By reconstructing and displaying the tool tip position in three orthogonal planes simultaneously, the system ensures the tip remains continuously visible and accurately localized, preventing the information loss that occurs when the tip moves in and out of a single 2D image plane.
Solution Approach 2:
The patent creates a universal 3D visualization framework that functions across multiple orthogonal planes simultaneously. This multi-functional display system provides comprehensive tool tip localization information in all spatial dimensions, ensuring complete positional information is available regardless of the tool's orientation or position within the imaging volume.
3Measurement precision
If MPR views are generated around the tool tip, then accurate localization is achieved, but defining appropriate MPR views is difficult due to visualization challenges
Solution Approach 1:
The patent implements automatic MPR view configuration where the system self-determines the optimal cutting planes and orientations based on the detected tool tip position. This automated approach eliminates the need for manual configuration of complex MPR parameters, allowing accurate localization to be achieved without requiring the operator to navigate complex view-setting procedures.
Solution Approach 2:
The patent employs real-time feedback mechanisms where the system continuously monitors tool tip position and automatically adjusts MPR view parameters accordingly. This closed-loop control simplifies the interface by eliminating manual configuration needs, as the system自适应ly optimizes the MPR display based on the current tool position and orientation, reducing device complexity while maintaining high localization precision.
Data Source
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AI summary
A system employs an interventional tool (30), ultrasound imaging system and a multi-planar reformatting module (40). The interventional tool (30)has one or more image tracking points (31). The ultrasound imaging system includes an ultrasound probe (20)operable for generating an ultrasound volume image (22)of a portion or an entirety of the interventional tool (30)within an anatomical region. The multi-planar reformatting imaging module (40) generates two or more multi- planar reformatting images (41) of the interventional tool (30)within the anatomical region. A generation of the two multi-planar reformatting images (41)includes an identification of each image tracking point (31)within the ultrasound volume image (22), and a utilization of each identified image tracking point (31)as an origin of the multi-planar reformatting images (41).