3D Catheter Position Display with Dynamic Trajectory Switching
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Solution Overview
Problem
Existing methods for generating three-dimensional images of cardiac cavities and blood vessels from two-dimensional ultrasound images are challenging for young or inexperienced doctors, leading to difficulties in understanding the position of a catheter during treatment due to loss of relevance between past and current positions.
Innovation Solution
An image processing device that switches between a first mode displaying a series of catheter positions and a second mode displaying a single position, using a sensor to detect catheter positions in a biological tissue and adjust display modes based on sensor movement, speed, and presence in the image plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a series of catheter positions are displayed using past pull-back information, then the catheter trajectory is visualized, but the relevance between past positions and current position is lost when the pull-back unit stays at the same place, making the current catheter position difficult to understand
Solution Approach 1:
The display mode dynamically switches between showing a series of catheter positions (first mode) and showing only the current catheter position (second mode) based on the movement state of the pull-back unit. When the pull-back unit is determined to be stationary, the system transitions to the second mode to emphasize the current position, thereby adapting the display to the operational context and resolving the loss of relevance between past and current positions.
Solution Approach 2:
The system changes the display parameter (number of positions shown) based on the movement state of the pull-back unit. When movement is detected, multiple positions are displayed; when stationary, only the current position is displayed. This parameter change ensures that the displayed information remains relevant and useful for understanding the current catheter position.
2Shape
If multiple catheter positions are displayed simultaneously, then the catheter trajectory is visible, but the current catheter position becomes difficult to distinguish when the pull-back unit is stationary
Solution Approach 1:
The display mode dynamically adjusts based on the movement state of the pull-back unit. When the pull-back unit is stationary, the system switches to the second mode that displays only the current catheter position, making it easy to distinguish. When the pull-back unit is moving, the system switches to the first mode that displays the series of positions, showing the trajectory. This dynamic adjustment resolves the contradiction between trajectory visualization and current position identification.
3Ease of operation
If a single catheter position is displayed, then the current location is clear, but the catheter trajectory and movement history are not visualized
Solution Approach 1:
The system dynamically switches between two display modes based on the movement state of the pull-back unit. The first mode displays a series of catheter positions to show trajectory, while the second mode displays only the current position for clear location understanding. This dynamic switching ensures that both trajectory information and current position clarity are provided at appropriate times, resolving the information loss issue.
Data Source
AI summary
An image processing device is an image processing device configured to cause a display to display three-dimensional data as a three-dimensional image, the three-dimensional data representing a biological tissue. The image processing device includes: a control unit configured to detect a series of positions of a catheter inserted into the biological tissue from data obtained in time series by a sensor observing the surrounding of a lumen of the biological tissue while moving in the lumen, and to switch a display mode between a first mode for displaying a first figure representing the series of positions in the three-dimensional image, and a second mode for displaying a second figure representing one position among the series of positions in the three-dimensional image.