Catheter Tip Positioning in X-Ray Fluoroscopy
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Solution Overview
Problem
During catheter treatment, the treatment apparatus inserted during bypass surgery interferes with X-ray fluoroscopic images, causing the distal end position of the catheter to be undisplayed when it is located behind the apparatus, which hinders the treatment process.
Innovation Solution
An image processing display device and program that extracts treatment apparatus images from X-ray fluoroscopic images and determines the distal end position of the catheter to superimpose and display it correctly, preventing interference by using a treatment apparatus image extractor and image processor to align and overlay the catheter position on the X-ray images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If treatment apparatus is inserted into arteries during bypass surgery, then complete revascularization can be performed more safely, but the treatment apparatus appears in X-ray fluoroscopic images and blocks the distal end position of the catheter, interfering with catheter treatment
Solution Approach 1:
The patent transitions from 2D X-ray fluoroscopic imaging to 3D volume data representation. By extracting and displaying the distal end position of the catheter in three-dimensional space, the system overcomes the limitation of the treatment apparatus blocking the view in 2D images. The 3D visualization allows operators to see through the treatment apparatus and accurately locate the catheter tip position.
Solution Approach 2:
The patent creates a virtual copy of the catheter distal end position by extracting it from volume data and superimposing it on the X-ray fluoroscopic image. This virtual representation allows the operator to see the catheter position even when physically blocked by the treatment apparatus in the actual X-ray image.
2Measurement precision
If treatment apparatus absorbs X-rays, then it can be visualized in fluoroscopic images, but it blocks the view of the catheter distal end position located behind it
Solution Approach 1:
The patent introduces volume data as an intermediary information source. Instead of relying solely on direct X-ray visualization, the system extracts catheter position information from the volume data set, which contains three-dimensional spatial information. This intermediary data source allows retrieval of the catheter distal end position without being blocked by the treatment apparatus.
Solution Approach 2:
The system adds a third dimension to the imaging problem by utilizing volume data. While the treatment apparatus blocks the 2D X-ray view, the 3D volume data contains complete spatial information about the catheter position, allowing extraction and display of the distal end position from this additional dimensional information.
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
The solution effectively prevents interference with catheter treatment by accurately displaying the distal end position of the catheter on X-ray fluoroscopic images, even when it is hidden behind the treatment apparatus, enhancing the safety and efficacy of hybrid treatment procedures.
Implementation Method 1
Some treatment apparatuses have the property of absorbing X-rays
Data Source
AI summary
An image processing display and an image processing display program that can prevent interference with catheter treatment even when the distal end of a catheter is located behind a treatment apparatus on X-ray fluoroscopic images. The image processing display displays X-ray fluoroscopic images to be obtained by looking through a region including blood vessels using X-rays during treatment, and includes a treatment apparatus image extractor and an image processor. The treatment apparatus image extractor, based on X-ray fluoroscopic images, extracts treatment apparatus images representing the treatment apparatus having the property of absorbing X-rays. The image processor determines the distal end position of the catheter to superimpose and display images representing the determined distal end position of the catheter on the region of the X-ray fluoroscopic images showing the treatment apparatus.