Radiotherapy Target Tracking From Scattering Images Without Collimators
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing radiotherapy methods require scattered beam collimating devices like pinholes or gratings between the irradiated object and detector, which occupy treatment space and are difficult to implement.
Innovation Solution
A tracking method and device that acquires actual scattering images of a target object using scattered rays, processes them with a preset model to determine location offsets, and tracks the object without the need for additional collimating devices, utilizing a neural network or probability model to simulate scattering processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If scattered beam collimating devices (pinhole, grating) are added between irradiated object and detector, then measurement precision is improved, but device complexity increases and treatment space is reduced
Solution Approach 1:
The patent extracts and eliminates the scattered beam collimating device from the system. Instead of using physical collimators (pinholes, gratings) between the object and detector, the invention processes scattering images through algorithms to remove scattering effects, thereby achieving accurate location determination without the complex collimating hardware.
Solution Approach 2:
The patent replaces the mechanical/optical collimating system with an information processing system. Rather than using physical devices to block or direct scattered beams, the invention uses computational methods to identify and correct scattering effects in the detected images, substituting mechanical complexity with algorithmic processing.
2Measurement precision
If scattered beam collimating devices are added between irradiated object and detector, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent removes the collimating device from the implementation pathway. By eliminating the need for physical collimators and their associated alignment and positioning requirements, the system becomes significantly easier to implement and operate while maintaining measurement precision through computational correction of scattering effects.
3Measurement precision
If scattered beam collimating devices are added between irradiated object and detector, then measurement precision is improved, but treatment space is reduced
Solution Approach 1:
The patent extracts and removes the collimating device from the treatment space. Without physical collimators occupying the space between the object and detector, the full treatment space remains available for the irradiated object and medical personnel, while measurement precision is maintained through computational scattering correction.
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
Accurately tracks the target object by reducing scattering influence on images, maintains treatment space, and simplifies engineering implementation by eliminating the need for additional collimating devices.
Implementation Method 1
the actual scattering image is generated according to rays scattered by a body tissue where the target object is located
Data Source
AI summary
A tracking method, a tracking system, and an electronic device are provided. The tracking method includes: acquiring an actual scattering image of a target object at time i, where i is an integer greater than 0, and the actual scattering image is generated according to rays scattered by body tissue where the target object is located; processing the actual scattering image or a reference image corresponding to the actual scattering image with a preset model, and determining a location offset of the target object at the time i according to the processing result; and tracking the target object according to the location offset of at least one time. The preset model is indicative of a location conversion relationship of corresponding pixels in images that are formed before and after the rays are scattered.