Parallel X-Ray Beam Structure for Stable Lesion Measurement
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Solution Overview
Problem
Existing X-ray diagnostic apparatuses often form a cone beam, and the magnification of the region included in the X-ray image changes depending on the SID or SOD, which can lead to overestimations or underestimations of lesions.
Innovation Solution
The use of a structure 103, which includes an acrylic material and a grid, which is used to scatter the X-rays, and a grid, which is used to scatter the X-rays, and a grid, which is used to scatter the X-rays, and a grid, which is used to scatter the X-rays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a cone beam is used for X-ray imaging, then the imaging coverage area is increased, but magnification changes occur leading to measurement precision degradation
Solution Approach 1:
The patent changes the geometric parameter of the X-ray beam from a divergent cone beam to a parallel beam by introducing a collimator with multiple parallel plates. This parameter change in beam geometry eliminates magnification effects while preserving adequate imaging coverage, thereby resolving the contradiction between coverage area and measurement precision.
2Measurement precision
If the source-to-image-receptor distance (SID) is increased to reduce magnification changes, then the apparatus size and examination room size must be increased
Solution Approach 1:
The patent introduces a collimator as an intermediary device between the X-ray source and the subject. This collimator with parallel plates creates a parallel beam that eliminates magnification effects without requiring increased SID, thus achieving measurement precision improvement without increasing apparatus size.
3Measurement precision
If a parallel beam is generated using a collimator, then magnification is stabilized and measurement precision is improved, but the device complexity increases
Solution Approach 1:
The collimator is segmented into multiple parallel plates arranged in a grid pattern. This segmentation approach creates the parallel beam effect through simple, repetitive structural units rather than a complex monolithic structure, thereby achieving measurement precision improvement with manageable device complexity.
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 structure 103, which includes an acrylic material and a grid, which is used to scatter the X-rays, and a grid, which is used to scatter the X-rays, and a grid, which is used to scatter the X-rays, and a grid, which is used to scatter the X-rays.
Implementation Method 1
a structure 103 which enables the subject P to be irradiated with a parallel beam of X-rays emitted from the X-ray tube 101
Implementation Method 2
a grid 103b which transmits, among the scattered X-rays, the scattered X-rays at a predetermined angle
Data Source
AI summary
A structure according to an embodiment is disposed between an X-ray emitter and a subject, and includes a scatterer configured to scatter X-rays emitted from the X-ray emitter, and a transmitter configured to transmit X-rays at a predetermined angle, among the X-rays scattered by the scatterer.