Coronary Image Processing for FFR-Guided Stenosis Localization
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Solution Overview
Problem
Existing methods for diagnosing coronary stenosis lesions rely on separate devices for anatomical and physiological evaluations, which can lead to difficulties in correlating intravascular pressure measurements with vascular images, making it challenging to intuitively determine stenosis positions.
Innovation Solution
An image processing apparatus that integrates with an X-ray diagnostic system to synchronize and display physiological indicators like FFR and CFR with vascular images, allowing for simultaneous anatomical and physiological evaluations by correlating intravascular pressure measurements with X-ray images using temporal synchronization and image processing techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate devices are used for anatomical and physiological evaluations, then each device can perform its specialized function, but it becomes difficult to correlate intravascular pressure measurements with vascular images
Solution Approach 1:
The patent combines the X-ray diagnostic system with the physiological measurement system by integrating the pressure sensor-equipped guide wire into the X-ray imaging environment. The measuring device is positioned within the X-ray device, allowing simultaneous acquisition of vascular images and intravascular pressure measurements without requiring separate evaluation devices, thus resolving the correlation difficulty while maintaining specialized functions
2Measurement precision
If physiological indicators are measured using separate measuring devices, then measurement precision can be maintained, but the difficulty of detecting and measuring increases due to lack of spatial correlation
Solution Approach 1:
The patent introduces the X-ray image as an intermediary that bridges the physiological measurement data with spatial information. The measurement position indicated on the X-ray image serves as a mediator, allowing the operator to visually correlate the physiological indicator (FFR, CFR) with the corresponding vascular location, thereby reducing the difficulty of detecting and measuring stenosis positions while preserving measurement precision
3Ease of operation
If intravascular pressure measurements are taken without image correlation, then measurement simplicity is maintained, but the ability to intuitively determine stenosis positions deteriorates
Solution Approach 1:
The patent makes the X-ray imaging system multi-functional by enabling it to serve both as an anatomical imaging device and as a spatial reference system for physiological measurements. The same X-ray image displays both the vascular anatomy and the measurement position markers, allowing the system to provide both simple measurement operation and intuitive spatial correlation without adding separate measurement devices
Data Source
AI summary
According to embodiment, an image processing apparatus comprising a specifying unit and a display controller. The specifying unit that specifies an acquisition position of an indicator relating to blood flow on a blood vessel-containing image collected by a medical image diagnostic apparatus. The display controller that displays the acquisition position on the blood vessel-containing image and displays the indicator on a display unit in association with the acquisition position.