X-ray Imaging Apparatus Long Image Alignment
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Solution Overview
Problem
X-ray imaging apparatuses generate misaligned long images due to subject movement during image capture, leading to inaccurate representation of the target portion's position and shape, which complicates diagnosis and treatment.
Innovation Solution
An X-ray imaging apparatus that includes a table, an imager, a movement mechanism, a position information acquirer, and an image processor. The apparatus captures multiple X-ray images while changing the relative position of the table to the imager, acquires position information, and displays the long image with a frame indicating the imager's range, allowing for accurate alignment and visualization of the target portion without additional irradiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If table movement imaging is performed to generate long images, then the imaging range is extended, but misalignment occurs when the subject moves during capture
Solution Approach 1:
The system acquires position information about the subject during table movement imaging and uses this feedback to perform alignment processing when generating the long image. This ensures that even if the subject moves during capture, the final composite image maintains proper alignment of anatomical structures across multiple imaging sections.
Solution Approach 2:
The system performs alignment processing based on position information before final image generation. By pre-processing the individual images to correct for subject movement using acquired position data, the system ensures accurate alignment is established before the long image is constructed, preventing misalignment artifacts.
2Measurement precision
If additional X-ray irradiation is performed to verify target portion position, then alignment accuracy is improved, but radiation exposure increases
Solution Approach 1:
The system uses the position information already acquired during the table movement imaging process itself to perform alignment processing. Rather than requiring separate verification irradiation, the system leverages the positional data collected during normal image capture to ensure accurate target portion positioning, thereby avoiding additional radiation exposure.
Solution Approach 2:
The system changes the parameter being used for alignment from requiring additional irradiation to utilizing position information acquired during normal imaging. By processing and utilizing positional parameters already available from the table movement process, the system achieves accurate target portion positioning without the need for extra X-ray exposure.
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 visualization and alignment of the target portion by concurrently displaying X-ray images with position information, allowing for precise diagnosis and treatment without the need for additional X-ray exposure.
Implementation Method 1
an imager that irradiates the subject with X-rays, detects the X-rays transmitted through the subject
Data Source
AI summary
In an X-ray imaging apparatus, an image processor concurrently displays, on an image display, a long image in which a frame indicating an imaging range of an imager is displayed and an X-ray image or a processed image containing position information that overlaps at least with position information of the frame.