X-ray Diagnosis Apparatus Stereoscopic Parametric Imaging
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Solution Overview
Problem
Current X-ray diagnosis systems face challenges in providing stereoscopic views during parametric imaging processes, where maintaining a high frame rate and ensuring same-color rendering at the same positions in parallax images are crucial for effective temporal change visualization.
Innovation Solution
The X-ray diagnosis apparatus generates two sets of DSA image data and parametric image data using substantially the same image and processing conditions but with different X-ray radiation directions, and employs a display controlling function to create a stereoscopic image from these data sets, ensuring that the same positions are rendered in the same color while maintaining a high frame rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If parallax images are generated by varying the angle of C-arm for stereoscopic view, then stereoscopic visualization is achieved, but the frame rate decreases and temporal change visualization becomes difficult
Solution Approach 1:
The patent transitions from spatial angle variation (varying C-arm angles) to temporal dimension utilization (acquiring multiple images at the same angle over time). By acquiring a first image before contrast agent injection and a second image during injection at the same C-arm angle, the system generates parametric images that visualize temporal changes in contrast agent concentration without sacrificing frame rate.
2Loss of information
If parametric imaging is performed to visualize temporal changes, then inflow time information is obtained, but stereoscopic view capability is lost
Solution Approach 1:
The patent merges parametric imaging and stereoscopic imaging into a single integrated system. It acquires image data from multiple C-arm angles (for stereoscopy) and multiple time points (for parametric analysis), then generates both parametric images showing temporal changes and stereoscopic images showing spatial depth, allowing simultaneous visualization of both temporal and spatial dimensions.
3Shape
If multiple image acquisition processes are performed at different angles for stereoscopic view, then depth perception is improved, but the complexity of image processing increases
Solution Approach 1:
The patent creates a multi-functional image processing system that handles both stereoscopic and parametric imaging through unified processing algorithms. The same image acquisition framework processes data for both spatial (stereoscopic) and temporal (parametric) analysis, reducing overall system complexity despite the multiple functions performed.
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
This approach enables the viewer to have a stereoscopic view in parametric imaging processes by ensuring parallax images are rendered in the same color, maintaining a frame rate sufficient for temporal change visualization, thus overcoming previous limitations in providing clear and effective stereoscopic images.
Implementation Method 1
generate first subtraction image data by performing a subtraction on contrast-enhanced image data and non-contrast-enhanced image data each taken in a time series by using first image acquisition conditions, while using X-rays radiated from a first direction; and generate second difference image data by performing a subtraction on contrast-enhanced image data and non-contrast-enhanced image data each taken in a time series by using second image acquisition conditions
Data Source
AI summary
An X-ray diagnosis apparatus comprises processing circuitry. The processing circuitry is configured: to generate first subtraction image by using a first image acquisition condition; to generate second subtraction image by using a second image acquisition condition that are substantially same as the first image acquisition condition; to generate first color image by using a first processing condition, each pixel of the first color image having a color according to a temporal transition at a corresponding position of the first subtraction image; to generate, by using a second processing condition that is substantially same as the first processing condition, second color image, each pixel of the second color image having a color according to a temporal transition at a corresponding position of the second subtraction image; and to cause a stereoscopic image to be displayed on the basis of the first color image and the second color image.