X-ray Diagnostic Apparatus Automatic Collimator Control
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Solution Overview
Problem
Current X-ray diagnostic apparatuses require manual operation to reduce exposure doses in high sensitivity areas, such as the eyes or thyroid, during procedures like IVR, and do not automatically minimize exposure doses for both patients and technicians, leading to potential overexposure.
Innovation Solution
An X-ray diagnostic apparatus equipped with an X-ray generation device, detector, image generation device, display device, portion detection device, and attenuation device, which automatically detects high sensitivity areas and adjusts X-ray irradiation using movable collimator blades and compensation filters to reduce exposure doses without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If manual operation of compensation filter and collimator is used, then exposure dose can be reduced for high sensitivity portions, but the system requires manual intervention and does not automatically reduce exposure dose
Solution Approach 1:
The system automatically detects high sensitivity portions through image processing and autonomously controls the compensation filter and collimator to reduce exposure dose, eliminating the need for manual operator intervention while maintaining dose reduction functionality
Solution Approach 2:
The system continuously monitors X-ray images to identify high sensitivity portions and dynamically adjusts the compensation filter and collimator positioning based on real-time image feedback, creating a closed-loop control system that automatically responds to patient anatomy
2Object-affected harmful factors
If compensation filter is used to attenuate X-rays, then exposure dose is reduced, but the filter is originally designed to prevent halation and requires manual operation
Solution Approach 1:
The compensation filter is enhanced to serve dual purposes: its original function of preventing halation and its new function of automatically reducing exposure dose to high sensitivity portions through automated control based on image detection
Solution Approach 2:
The system automatically determines when and where to deploy the compensation filter based on real-time image analysis, eliminating manual operation while preserving the filter's original halation prevention capability
3Object-affected harmful factors
If collimator is used to block X-rays, then exposure dose is reduced for specific areas, but manual operation is required and does not automatically protect high sensitivity portions
Solution Approach 1:
The collimator system integrates with real-time image processing to continuously monitor patient anatomy and automatically adjusts collimator positioning to protect identified high sensitivity portions from X-ray exposure
Solution Approach 2:
The collimator system transitions from static manual positioning to dynamic automated adjustment, allowing real-time adaptation to changing patient positions and anatomical features during the procedure
4Loss of information
If X-ray conditions are set for long fluoroscopy time, then sufficient image information is acquired, but high sensitivity portions are exposed at high dose
Solution Approach 1:
The system applies differential radiation protection by leaving the general irradiation field unchanged for adequate imaging while selectively attenuating X-rays in specific local areas identified as high sensitivity portions through image processing
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
Automatically reduces exposure doses to high sensitivity areas, minimizing radiation exposure for both patients and technicians, thereby enhancing safety and reducing operator workload during procedures.
Implementation Method 1
an X-ray generation device that generates X-rays to irradiate an object
Implementation Method 2
an attenuation device that attenuates the X-rays to irradiate a region including the detected portion
Data Source
AI summary
An X-ray diagnostic apparatus according to one embodiment includes an X-ray generating device, an X-ray detector, an image generation device, a display device, a portion detection device, and an attenuation device. The X-ray generation device generates X-rays to irradiate an object. The X-ray detector detects X-rays transmitted through the object. The image generation device generates an X-ray image based on the detected X-rays. The display device displays the X-ray image. The portion detection device detects an exposure dose reduction target portion based on the X-ray image. The attenuation device attenuates the X-rays to irradiate a region including the detected portion.