X-ray Diagnostic Apparatus Overlap Region Control
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Solution Overview
Problem
In X-ray diagnostic apparatuses, long range imaging requires synthesizing multiple X-ray images taken at different positions, which often results in blurred images due to blend processing in overlap regions, making it difficult to maintain image quality, especially when the overlap region coincides with regions of interest or sensitive areas.
Innovation Solution
The X-ray diagnostic apparatus includes a processing circuit and display system that allows operators to adjust and move overlap regions on a preparation screen, preventing them from falling on critical areas and enabling flexible positioning to avoid blurring, using a touch panel interface for user input and displaying virtual X-ray image regions for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If blend processing is performed on overlap regions to synthesize multiple X-ray images, then the imaging range is widened, but the image quality deteriorates due to blurring in the overlap regions
Solution Approach 1:
The system performs preliminary positioning of the X-ray tube and detector to precisely control the overlap regions before image synthesis. By pre-positioning the imaging components and defining overlap regions in advance, the system can perform blend processing while maintaining image quality in critical areas, thus resolving the contradiction between widened imaging range and preserved image quality
Solution Approach 2:
The system applies different processing strategies to different regions of the synthesized image. Critical areas (regions of interest) are protected from blend processing or given higher weighting, while non-critical overlap regions undergo standard blending. This local differentiation allows the imaging range to be widened without compromising the quality of important diagnostic areas
2Area of stationary object
If multiple X-ray images are synthesized to widen the imaging range, then the coverage area increases, but the diagnostic accuracy decreases due to image blurring in overlap regions
Solution Approach 1:
The system differentiates between critical and non-critical regions in the synthesized image, applying quality-preserving synthesis methods to critical areas while allowing standard blending in non-critical overlap regions. This ensures diagnostic accuracy is maintained in important areas while still achieving widened imaging coverage
Solution Approach 2:
The system provides feedback mechanisms that allow operators to review the synthesized image and identify regions where diagnostic accuracy may be compromised. Based on this feedback, the system can adjust the synthesis parameters or re-acquire images of critical areas, thus maintaining diagnostic accuracy while preserving the benefit of widened imaging range
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 solution prevents blurring and maintains image quality by allowing operators to adjust overlap regions, ensuring that regions of interest are not affected by blend processing, thereby improving diagnostic accuracy and user operability.
Implementation Method 1
an X-ray tube holding device 12 that holds an X-ray tube 12a
Implementation Method 2
detects the X-rays transmitted through the subject to perform X-ray imaging
Data Source
AI summary
An X-ray diagnostic apparatus according to an embodiment has a display configured to superimpose and display a plurality of X-ray irradiation ranges for generating a long range X-ray image on an image indicating a subject; and a display controller configured to change, based on an operation of a user, a position of an overlap region which is displayed on the display and at which the X-ray irradiation ranges which are adjacent to each other are overlapped.