Automatic Laser Marker Positioning in X-Ray Imaging
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Solution Overview
Problem
Existing radiation image photographing systems lack efficient and accurate automatic positioning control for indicating regions of interest using laser markers, resulting in inefficiency and low positional accuracy during medical procedures.
Innovation Solution
A radiation image photographing apparatus that includes a radiation emission means, a radiation image detection means, an image display means, a specification means for defining regions of interest, and a region of interest indication means using a laser light source, which automatically positions the mark on the subject based on the specified region, with calibration using a reference point and shape recognition for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual control of laser marker position is used while looking at the photographed radiation image, then the doctor or radiographer can indicate a mark on the region of interest, but the positioning efficiency is low and positional accuracy is relatively low
Solution Approach 1:
The patent replaces the manual mechanical control of laser marker position with an automatic control system that uses the photographed radiation image data to calculate and control the laser marker position. The control unit automatically determines the position of the region of interest from the digital image and controls the laser marker to indicate at the calculated position, eliminating manual intervention and achieving both high positional accuracy and efficiency.
2Productivity
If automatic positioning control of the mark is implemented based on the photographed radiation image, then positioning efficiency and accuracy are improved, but the device complexity increases
Solution Approach 1:
The patent integrates multiple functions into a single control unit that can process the photographed radiation image, calculate the region of interest position, and control the laser marker indication. The control unit utilizes the existing photographed image data for both diagnostic purposes and for automatic marker positioning, achieving multi-functionality without requiring separate dedicated systems for each function.
3Measurement precision
If the focal point of the laser light source is placed at the virtual image position of the focal point of the radiation emission means, then the mark is accurately indicated on the subject corresponding to the region of interest, but the device complexity and alignment requirements increase
Solution Approach 1:
The patent creates a virtual image of the radiation source focal point through optical elements (such as a lens or mirror system) and positions the laser light source focal point at this virtual image position. This optical copying approach allows the laser marker to accurately indicate the corresponding position on the subject without requiring complex mechanical alignment, as the optical system automatically provides the correct geometric relationship.
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
Enables accurate and automatic indication of marks on regions of interest in radiation images, improving user efficiency and positional accuracy regardless of the subject's three-dimensional shape, and allowing for precise marking and potential biological sampling.
Implementation Method 1
a radiation emission means for emitting radiation toward a subject
Implementation Method 2
a radiation image detection means for recording a radiation image of the subject by receiving radiation transmitted through the subject
Implementation Method 3
a region of interest indication means for indicating a mark on a site of the subject corresponding to the region of interest
Data Source
AI summary
A radiation image photographing apparatus is formed with a photographing unit that includes a radiation emission means for emitting radiation, a radiation image detection means for recording a radiation image, a region of interest indication means for indicating a mark on a site of a subject corresponding to the region of interest specified in the radiation image, and the like; a computer having an input means, such as a mouse; and a monitor, in which a radiation image obtained by photographing is displayed on the monitor to have the user to specify a region of interest through the input means, and when coordinate information of the region of interest in the image is received from the computer, photographing unit, based on this, controls the region of interest indication means to automatically indicate a mark on a site of the subject corresponding to the region of interest.