Virtual X-Ray Planning via Mobile Device Positioning
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Solution Overview
Problem
Manually setting projection geometry in medical 2D X-ray imaging often results in suboptimal images, requiring test images with additional radiation exposure, which is undesirable.
Innovation Solution
A method using a mobile device with a display area and optical camera to create virtual X-ray images based on patient models, allowing operators to simulate and optimize projection geometries without actual radiation, by determining the position and orientation of the mobile device and displaying virtual X-ray images for intuitive planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If test images are taken to determine optimal projection geometry, then image quality is improved, but radiation exposure increases
Solution Approach 1:
The patent creates a virtual copy of the patient's anatomy using 3D surface data and anatomical models. This virtual model allows operators to simulate X-ray projections and determine optimal geometry without exposing the actual patient to additional radiation. The virtual X-ray images replicate the appearance and geometric properties of real X-rays while containing no harmful radiation.
Solution Approach 2:
The patent introduces a computing device as an intermediary between the patient and the X-ray system. This intermediary processes 3D surface data, generates virtual anatomical models, and simulates projection geometries. By mediating through computational simulation, the system eliminates the need for test images that would otherwise require direct radiation exposure of the patient.
2Ease of operation
If manual setting of projection geometry is performed, then operator experience is utilized, but image optimization is insufficient
Solution Approach 1:
The patent implements a feedback loop where the computing device provides visual feedback through virtual X-ray images displayed on a user interface. Operators can adjust projection geometry parameters and immediately see the simulated effect on image quality. This feedback mechanism enables operators to iteratively optimize geometry based on visual information, combining manual control with computational precision.
Solution Approach 2:
The patent performs preliminary computational analysis by generating virtual models and simulating various projection geometries before actual X-ray imaging. This preliminary action provides operators with advance information about optimal geometry settings, allowing them to make informed adjustments and avoid suboptimal manual settings that would require retakes.
3Measurement precision
If multiple projection geometries are tested, then optimal geometry is found, but time consumption increases
Solution Approach 1:
The patent enables rapid periodic evaluation of multiple projection geometries through computational simulation. The computing device can quickly generate and display virtual X-ray images for different geometric configurations, allowing operators to assess multiple options in succession without the time penalty of actual imaging. This periodic simulation approach accelerates the optimization process compared to sequential test imaging.
Solution Approach 2:
By using virtual copies of anatomical structures, the system allows unlimited rapid testing of different projection geometries without consuming actual imaging time. Each virtual simulation is computationally generated instantaneously, enabling operators to evaluate numerous geometric options during the planning phase without adding to the patient's imaging time or schedule delays.
Data Source
AI summary
A method for planning a recording of an X-ray image of a patient by an X-ray system. The X-ray system includes a recording system that may be adjusted into a large number of projection geometries with an X-ray source and an X-ray detector, using a mobile device comprising a display area. The method includes creating at least one first recording of a recording region of the patient by a capturing apparatus, for example an optical camera, providing a patient model of the patient anatomy of the patient, capturing the position and orientation of the manually positioned mobile device, creating a virtual X-ray image of at least one part of the patient using the patient model, at least the first recording and the position and/or orientation of the mobile device, and displaying the virtual X-ray image on the display area of the mobile device.