Optical Target Recognition for Precise Radiation Beam Limiting
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Solution Overview
Problem
Radiation devices often irradiate regions of the human body that do not match the intended target, leading to unnecessary exposure and potential harm.
Innovation Solution
A method and system for determining parameters related to medical operations using optical image information and target part information to accurately position the beam limiting device, utilizing machine learning models to enhance precision and reduce unnecessary radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a beam limiter is used to define the radiation opening, then the radiation can be directed to a specific region, but the opening may not match the intended target region, causing unnecessary radiation exposure
Solution Approach 1:
The patent replaces manual mechanical positioning of the beam limiter with an automated optical recognition system. A camera captures images of the target region, and image processing algorithms automatically determine the precise position and orientation of the target, which then controls the beam limiter's opening position. This substitution eliminates manual positioning errors and ensures accurate alignment between the radiation opening and the intended target region.
Solution Approach 2:
The system enables the beam limiting device to automatically determine its own target position through optical image recognition. The device captures images, processes them to identify the target region, and autonomously adjusts the beam limiter opening without requiring external manual intervention. This self-service capability ensures consistent and accurate positioning while reducing human error.
2Measurement precision
If manual positioning of the beam limiter is used, then the system is simple to operate, but the matching accuracy between the opening and target region is poor
Solution Approach 1:
The patent integrates multiple functions into a single automated system: the camera serves as both the imaging device for target recognition and the reference for beam positioning; the image processing system simultaneously identifies target position, orientation, and size; and the control system automatically adjusts the beam limiter based on this integrated information. This multi-functionality achieves high matching accuracy without proportionally increasing system complexity.
Solution Approach 2:
The patent introduces an optical image as an intermediary between the manual operation and the beam limiter positioning. Instead of directly manipulating the beam limiter, the system uses captured images as a mediator to transfer position information from the target region to the beam limiter control system. This intermediary enables precise positioning through automated image processing while maintaining system manageability.
3Area of stationary object
If the beam limiter opening is adjusted to cover a larger area, then more of the target region can be irradiated, but unnecessary radiation exposure to surrounding areas increases
Solution Approach 1:
The patent applies local quality by precisely matching the beam limiter opening shape and position to the specific geometry of the target region. Instead of using a uniform or oversized opening, the system processes the target region's image to determine its exact boundaries and contours, then configures the beam limiter opening to conform specifically to those boundaries. This ensures that radiation is concentrated exactly where needed while minimizing exposure to surrounding non-target areas.
Solution Approach 2:
The patent implements dynamic adjustment of the beam limiter opening based on real-time optical image recognition. The system can adapt the opening position, size, and shape according to the actual target region identified in the captured images. This dynamic capability allows the irradiated area to precisely match the target region regardless of variations in target position or orientation, maximizing coverage of the intended area while minimizing radiation to surrounding tissues.
Data Source
AI summary
The embodiments of the present disclosure provides a method for determining parameters related to a medical operation. The method includes obtaining optical image information of a target object. The optical image information may include a target part of the target object to be irradiated. The method further includes determining the parameters related to the medical operation based on the optical image information.