X-ray Imaging Apparatus Skin Dose Visualization
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Solution Overview
Problem
Existing X-ray diagnostic imaging apparatuses face challenges in determining the appropriate position of the arm for minimizing skin incident dose during X-ray irradiation, as the displayed skin incident dose on a human body model does not always align with the actual arm position, making it difficult to adjust effectively.
Innovation Solution
An X-ray diagnostic imaging apparatus that calculates and displays the skin incident dose on a three-dimensional image of the body surface, allowing for the superposition of this information onto a three-dimensional blood vessel image, enabling rotation and highlighting of the synthetic image to facilitate accurate determination of the arm's working angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If skin incident dose is displayed on a human body model, then operators can visually recognize dose increase, but the displayed position does not necessarily match actual arm position making determination difficult
Solution Approach 1:
The patent creates a three-dimensional image that copies the actual body surface geometry and superposes skin incident dose information onto this copied representation. This allows the dose information to be displayed in its true spatial relationship to the body, independent of the arm's physical position, thereby resolving the mismatch between displayed and actual positions while maintaining ease of operation.
Solution Approach 2:
The patent transitions from displaying dose information in two dimensions (on a flat human body model) to three dimensions (on a 3D reconstructed body surface). This dimensional enhancement allows operators to rotate and view the dose distribution from multiple angles, making it easier to determine the appropriate arm position by visualizing the spatial relationship between the dose hotspots and the intended irradiation field.
2Object-affected harmful factors
If arm position is changed to suppress X-ray disorder, then skin incident dose can be reduced, but determining appropriate working angle becomes difficult
Solution Approach 1:
The patent provides real-time feedback by calculating and displaying skin incident dose information on the three-dimensional body surface image. This feedback mechanism allows operators to see the expected dose distribution for different arm positions and working angles, enabling them to make informed adjustments to minimize skin incident dose while maintaining effective irradiation of the target region.
Solution Approach 2:
The patent performs preliminary calculation and display of skin incident dose information before actual X-ray irradiation. By showing the predicted dose distribution on the 3D body surface image, operators can pre-determine the optimal arm position and working angle to minimize skin dose, avoiding trial-and-error adjustments during the actual procedure.
3Ease of operation
If three-dimensional image with superposed dose information is created, then arm position can be determined easily, but image processing complexity increases
Solution Approach 1:
The patent merges the three-dimensional body surface image with skin incident dose information into a single composite display. By integrating these two types of information (geometric structure and dose distribution) into one unified visualization, the system enables easy arm position determination without requiring separate processing steps or multiple displays, thereby managing processing complexity while maintaining operational ease.
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 allows operators to easily determine an appropriate arm position considering the skin incident dose, improving the accuracy of exposure dose and exposure region alignment, and enabling intuitive recognition of exposure situations by displaying skin dose information on blood vessel images.
Implementation Method 1
irradiates an X-ray from outside a human body, catches the X-ray transmitted through the human body by an X-ray detector
Implementation Method 2
calculates an incident dose on a body surface of an object
Data Source
AI summary
An X-ray diagnostic imaging apparatus according to this embodiment includes a display for displaying an image and a processing circuitry which calculates an incident dose on a body surface of an object, superposes information based on the calculated incident dose on a three-dimensional image which is a three-dimensional image relating to the object and is capable of rotating display at a corresponding position on the body surface of the object and causes the three-dimensional image on which the information is superposed to be displayed on the display.