X-ray imager motion detection using multiple frame acquisition
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Solution Overview
Problem
Mammography images are often blurred due to patient tissue movement during X-ray exposure, leading to the need for multiple exposures and increased radiation for clear images, as motion detection typically occurs after image capture.
Innovation Solution
A medical imaging system that acquires multiple images during a single X-ray dose and detects motion in real-time using a CMOS detector and computer system, allowing for intelligent control of X-ray exposure and image selection to create a diagnostic image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple images are acquired during a single X-ray dose to enable motion detection, then image quality and diagnostic accuracy improve, but the complexity of the imaging system and image processing increases
Solution Approach 1:
The imaging process is segmented into multiple discrete image acquisitions during a single X-ray dose, allowing individual frame analysis for motion detection. Each frame can be independently evaluated and selected based on quality metrics, enabling precise motion assessment without requiring a complete re-acquisition sequence.
Solution Approach 2:
The system implements real-time feedback by analyzing multiple acquired frames to detect motion artifacts. The analysis of frame sequences provides feedback on patient tissue stability, allowing the system to identify the clearest image for diagnostic use and determine whether additional imaging is necessary.
2Object-affected harmful factors
If motion detection is performed after image capture, then the imaging process remains simple, but multiple exposures are required increasing radiation dose to the patient
Solution Approach 1:
Motion detection and image quality assessment are performed preliminarily during the acquisition phase using multiple frames captured within a single dose window. This preliminary analysis allows the system to identify suitable diagnostic images before finalizing the imaging sequence, preventing the need for additional exposure sequences.
Solution Approach 2:
The system changes the temporal parameter of image acquisition by capturing multiple frames at different time points within a single dose window. This parameter change enables motion assessment without increasing the total radiation dose, as all frames are acquired during one exposure event rather than requiring multiple separate exposures.
3Reliability
If a single image is acquired with prolonged exposure time, then the system operation is simple, but patient tissue movement increases causing blurred images
Solution Approach 1:
Instead of a single prolonged exposure, the system uses periodic action by acquiring multiple discrete images at different time points during the dose window. This periodic sampling captures the patient tissue state at various moments, allowing selection of the clearest image that represents the most stable period during imaging.
Solution Approach 2:
The system embraces the dynamic nature of patient tissue during imaging by continuously acquiring multiple frames rather than attempting to freeze the tissue with a single long exposure. The dynamic acquisition allows the system to adapt and select images taken during periods of minimal motion, improving reliability without requiring the tissue to remain completely static.
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
Reduces the number of X-ray exposures and improves image quality by detecting motion during imaging, allowing for the creation of clear diagnostic images without prolonged exposure.
Implementation Method 1
receiving a plurality of patient tissue images during an x-ray dose
Data Source
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AI summary
According to some embodiments, a method and a system to create a medical image are disclosed. The method comprises receiving a plurality of patient tissue images during an x-ray dose. Furthermore, during the x-ray dose, a determination is made if motion occurred in the plurality of patient tissue images. In a case that no motion is determined, a diagnostic image of the patient tissue comprising the plurality of patient tissue images is created.