X-Ray Positioning Guidance Using 3D Range Sensor Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Inefficient patient positioning during x-ray imaging often results in poor-quality images and unnecessary radiation exposure, particularly when conducted by inexperienced personnel.
Innovation Solution
A system combining an x-ray emitter with a three-dimensional range sensor and a processor that generates virtual maps to compare the positioned body part to reference envelopes, ensuring proper alignment and minimizing radiation exposure by providing real-time feedback to the operator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual positioning methods are used by inexperienced personnel, then device complexity is reduced, but positioning precision deteriorates resulting in poor-quality images
Solution Approach 1:
The patent creates virtual copies (digital twins) of the x-ray device components and patient anatomy using 3D scanning technology. These virtual models are then used for simulation and positioning optimization without requiring physical manipulation, thereby improving positioning precision while keeping the actual physical device simple
Solution Approach 2:
The system performs preliminary 3D scanning and virtual mapping of both the x-ray device geometry and patient anatomy before the actual imaging procedure. This advance preparation allows optimal positioning to be determined in advance, eliminating the need for complex real-time adjustments during the procedure
2Measurement precision
If multiple positioning attempts are made to achieve proper alignment, then positioning precision is improved, but radiation exposure increases
Solution Approach 1:
The system performs all necessary positioning calculations and optimizations in advance using virtual models, so that the actual x-ray imaging can be performed with minimal adjustments and in a single attempt, thereby reducing cumulative radiation exposure from multiple trials
Solution Approach 2:
The system provides real-time feedback during positioning by comparing the actual device and patient geometry with the pre-calculated optimal positioning parameters, enabling immediate correction and achieving proper alignment on the first attempt without requiring multiple radiation-exposing trials
3Manufacturing precision
If real-time 3D mapping and comparison systems are implemented, then image quality is improved, but device complexity increases
Solution Approach 1:
The system uses a single 3D scanning device that serves multiple functions: mapping the x-ray device geometry, scanning the patient anatomy, and providing real-time positioning feedback. This multi-functionality improves positioning accuracy without requiring separate complex systems for each function
Solution Approach 2:
The system creates virtual digital twins of both the x-ray device and patient anatomy that can be manipulated and analyzed computationally. These virtual copies enable complex real-time comparison and positioning optimization without requiring complex physical modifications to the actual imaging equipment
4Productivity
If automated positioning guidance is used, then productivity is improved by reducing repositioning, but device complexity increases
Solution Approach 1:
The system provides automated self-guidance for positioning by continuously comparing the actual configuration with the optimal parameters and providing feedback to the operator. This automation improves imaging efficiency by eliminating the need for operator expertise and manual trial-and-error adjustments
Solution Approach 2:
The system implements closed-loop feedback by continuously monitoring the device and patient geometry, comparing it with pre-calculated optimal parameters, and providing real-time guidance to maintain proper positioning. This automated feedback mechanism improves productivity by preventing positioning errors before they occur rather than requiring corrective repositioning
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
Ensures high-quality, properly positioned x-ray images on the first attempt, reducing patient radiation exposure and improving diagnostic accuracy by guiding operators through precise positioning using virtual maps and notifications.
Implementation Method 1
a three-dimensional range sensor having a field of view that at least partially overlaps the field of view of the x-ray emitter
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A system for assisting an x-ray operator with properly positioning a patient's body part to be x-rayed. The system uses a range sensor and/or a camera supported on an x-ray emitter to collect data about the patient's body part to be x-rayed. The data is transmitted to a processor and compared to a selected reference envelope or image. The processor provides an x-ray operator with a positive or negative notification based on its analysis of the collected data and the selected reference envelope or image. A negative notification indicates that the patient's body part needs to be adjusted. A positive notification indicates that the patient's body part is ready to be x-rayed.