DSA Image Contrast Visualization via Composite Display Segmentation
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Solution Overview
Problem
Current systems for analyzing blood flow through vessels in angiography images fail to provide a comprehensive visualization of blood flow characteristics over time at multiple points, limiting the ability to assess treatment effectiveness or needs.
Innovation Solution
A system and user interface that generates a composite display image with a first area showing a patient's vessel structure and contrast agent flow over time, and a second area displaying a graph of contrast agent concentration, allowing users to select points of interest using a cursor control device for detailed visualization and comparison of blood flow characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a static color image showing a single characteristic of a point in the image is provided, then the system complexity is reduced, but the ability to visualize blood flow characteristics over time at multiple points is lost
Solution Approach 1:
The display is segmented into multiple independent regions: a DSA image display area showing vascular anatomy, a graph display area showing contrast agent concentration over time, and a cursor control area. This segmentation allows each region to serve its specific function without increasing overall system complexity while preserving comprehensive blood flow information.
Solution Approach 2:
The system transitions from a two-dimensional static image to a multi-dimensional display by adding a temporal dimension through the contrast agent concentration graph. This graph plots concentration values over time, enabling visualization of blood flow dynamics at selected points without complicating the underlying image processing.
2Loss of information
If a composite display image showing both DSA image and contrast agent concentration graph is generated, then blood flow visualization capability is improved, but device complexity increases
Solution Approach 1:
The system merges the DSA image display and contrast agent concentration graph into a single composite display window. This integration allows simultaneous visualization of vascular anatomy and temporal concentration data without requiring separate display devices, thereby improving information availability while managing display complexity through unified interface design.
3Measurement precision
If user interaction with cursor control device is enabled for selecting points of interest, then measurement precision is improved, but ease of operation decreases
Solution Approach 1:
The system provides real-time feedback by dynamically updating the contrast agent concentration graph as the cursor moves across the DSA image. This interactive feedback mechanism allows users to precisely select points of interest while immediately visualizing the corresponding temporal concentration data, enhancing measurement precision through guided exploration without excessive operational complexity.
Data Source
AI summary
A system provides a display image enabling a user to visualize and compare blood flow characteristics over time at selected points in an angiographic X-ray image. A system and user interface enables user interaction with a medical vessel structure image to determine individual vessel blood flow characteristics. The system includes a user interface cursor control device and a display processor for generating data representing a single composite display image. The composite display image includes, a first image area showing a patient vessel structure and contrast agent flow through the patient vessel structure over a first period of time and a second image area showing a graph of contrast agent concentration in a particular portion of the vessel structure over a second period of time. The particular portion of the vessel structure is selected in response to user command using the cursor control device.