Neural Pose Guidance for Accurate X-Ray Anatomical Positioning
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Solution Overview
Problem
Conventional methods for positioning anatomical structures in X-ray imaging systems face challenges in achieving accurate alignment, leading to the need for re-takes and increased radiation exposure due to suboptimal image quality.
Innovation Solution
A computer-implemented method using a neural network to process initial X-ray and camera images to generate pose adjustment information, enabling precise alignment of anatomical structures for optimal X-ray projection images without additional radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional manual positioning methods are used, then operator experience can guide initial placement, but positioning accuracy is insufficient leading to re-takes and increased radiation dose
Solution Approach 1:
The patent replaces manual mechanical positioning with an automated computer vision system. The system uses camera images and X-ray images to automatically calculate pose adjustment information, substituting the operator's manual positioning with an automated image processing and calculation system that provides more precise positioning.
Solution Approach 2:
The patent creates a visual copy of the anatomical structure's current pose from camera images and compares it with the target pose. By generating pose adjustment information based on the difference between the captured image and target image, the system provides precise guidance for positioning without requiring additional X-ray exposure.
2Productivity
If manual positioning by operator is used, then workflow can proceed, but time is lost due to re-takes when positioning is incorrect
Solution Approach 1:
The patent performs preliminary positioning using camera images before acquiring the final X-ray image. By calculating pose adjustment information from the camera image and adjusting the anatomical structure's pose beforehand, the system ensures correct positioning is achieved prior to X-ray acquisition, preventing the need for re-takes and saving time.
Solution Approach 2:
The patent implements a feedback loop where the system continuously monitors the anatomical structure's pose using camera images, compares it with the target pose, and provides real-time pose adjustment information. This feedback mechanism enables rapid correction of positioning errors without leaving the examination room, improving workflow efficiency.
3Manufacturing precision
If conventional positioning methods are used, then simple equipment is required, but positioning precision cannot achieve target image quality
Solution Approach 1:
The patent makes the existing camera serve multiple functions: it not only captures visible light images for documentation but also serves as a positioning tool by comparing camera images with target images to calculate pose adjustment information. This multi-functional use of the camera avoids adding complex dedicated positioning equipment while achieving precise positioning.
Data Source
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AI summary
A computer-implemented method of providing pose adjustment information (110) for adjusting a pose of an anatomical structure (120) with respect to a projection X-ray imaging system (130a, 130b) in order to acquire a target X-ray projection image representing the anatomical structure, is provided. An initial X-ray projection image representing the anatomical structure and/or a camera image representing the anatomical structure, are inputted into a neural network. The initial X-ray projection image is acquired with the anatomical structure in an initial pose (α1) with respect the projection X-ray imaging system (130a, 130b). The camera image is acquired by a camera configured to view the anatomical structure, and is acquired with the anatomical structure in the initial pose. In response to the inputting, the neural network generates pose adjustment information (110) for adjusting the initial pose (α1) of the anatomical structure with respect to the projection X-ray imaging system (130a, 130b) in order to acquire the target X-ray projection image.