3D Camera Radiography Positioning Preview
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Solution Overview
Problem
Current radiography systems rely on subjective assessment for positioning body regions, leading to suboptimal alignments, additional patient exposure, and reduced system lifespan due to frequent re-exposures.
Innovation Solution
A method and device utilizing a 3D camera system to create a three-dimensional positioning image, generating a patient model, and simulating X-ray projections to ensure correct positioning before actual exposure, thereby allowing for real-time comparison and adjustment of camera images with simulated X-rays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If subjective assessment by specialist is used for positioning, then positioning quality can be evaluated, but additional exposures are required leading to increased patient dose and reduced system lifespan
Solution Approach 1:
The system performs preliminary positioning verification using a 3D camera to capture the body region before actual radiographic exposure. A preview image is generated and automatically evaluated to confirm correct positioning, allowing corrections to be made without exposing the patient to additional radiation.
Solution Approach 2:
The invention creates a digital copy (preview image) of the positioning information from the 3D camera data. This digital replica allows automated evaluation of positioning quality without requiring actual X-ray exposure, replacing the need for trial exposures with a harmless visual simulation.
2Measurement precision
If multiple exposures are taken to ensure correct positioning, then positioning accuracy can be improved, but system wear increases and service life decreases
Solution Approach 1:
The system performs preliminary positioning verification using a 3D camera to capture the body region before actual radiographic exposure. A preview image is generated and automatically evaluated to confirm correct positioning, allowing corrections to be made without exposing the patient to additional radiation.
Solution Approach 2:
The invention creates a digital copy (preview image) of the positioning information from the 3D camera data. This digital replica allows automated evaluation of positioning quality without requiring actual X-ray exposure, replacing the need for trial exposures with a harmless visual simulation.
3Extent of automation
If automated evaluation of preview image is implemented, then positioning correctness can be verified before exposure, but device complexity increases
Solution Approach 1:
The system performs self-evaluation of the preview image using automated algorithms that analyze the captured 3D data and determine whether positioning meets the requirements for the requested radiographic examination. The system independently verifies positioning correctness without requiring additional manual intervention or complex external verification equipment.
Data Source
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AI summary
The invention relates to a method for positioning a body region (K) of a patient (P) for a radiographic image (R) by a radiography system (1), comprising the steps: a) providing an examination request (U), b) pre-positioning the body region (K), c) pre-positioning a scanning unit (3) of the radiography system (1), d) creating a three-dimensional positioning image (PA) with a 3D camera system (6), e) creating a preview image (VB) from the positioning image (PA), wherein the preview image (VB) is created from a patient model (PM) generated from the positioning image (PA), and wherein the preview image (VB) represents a view as would have been intended to occur with the scanning unit (3) of the radiography system (1) in the pre-positioning position assumed in step c).f) Output of the preview image (VB) and/or positioning information (PI) based on the preview image (VB). The invention further relates to a corresponding device and a corresponding control unit or radiography system.