Dynamic Imaging System Intermittent Mode Radiation Dose Control
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Solution Overview
Problem
Existing dynamic imaging systems face limitations in acquiring dynamic images for an extended period while minimizing exposure dose, especially when performing imaging outside the imaging room.
Innovation Solution
A dynamic imaging system that operates in an intermittent imaging mode, controlled by a hardware processor, which allows for multiple imaging sessions based on specified imaging periods and suspension periods, thereby optimizing exposure and image acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If continuous X-ray pulse irradiation is performed for long-time dynamic imaging, then dynamic images can be acquired for extended periods, but the exposure dose increases excessively
Solution Approach 1:
The patent implements intermittent imaging mode where dynamic imaging is performed in multiple cycles, alternating between imaging periods and suspension periods. During imaging periods, X-ray pulses are emitted to capture dynamic images; during suspension periods, X-ray emission is stopped to reduce exposure dose. This periodic on-off cycling allows extended total imaging duration while controlling cumulative radiation exposure within safe limits.
2Object-affected harmful factors
If X-ray pulse irradiation is limited to reduce exposure dose, then radiation safety is improved, but imaging cannot be performed for long time
Solution Approach 1:
The patent divides continuous imaging into multiple discrete imaging cycles, each consisting of an imaging period followed by a suspension period. This segmentation allows the system to accumulate imaging time across multiple cycles while inserting radiation-free intervals between them. The total imaging duration can extend beyond what would be safe with continuous irradiation, as the cumulative dose is distributed across separated time intervals with recovery periods in between.
3Object-affected harmful factors
If intermittent imaging mode is implemented to suppress exposure dose increase, then radiation safety is improved, but imaging frequency is reduced
Solution Approach 1:
The patent employs dynamic adjustment of imaging parameters including the timing and duration of imaging periods and suspension periods. The system can adaptively optimize the balance between imaging frequency and dose reduction by adjusting the length of imaging windows and intervals based on clinical needs. This dynamic control allows maximizing imaging productivity within safe radiation limits, capturing critical dynamic events while maintaining radiation safety.
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
Enables the acquisition of dynamic images for a required period while effectively suppressing the increase of exposure dose, allowing for continuous monitoring without exceeding safe radiation limits.
Implementation Method 1
irradiating a subject with radiation by the radiation source and detecting the radiation passing through the subject by the radiation detector
Data Source
AI summary
A dynamic imaging system includes: a radiation source, a radiation detector, and a hardware processor. The dynamic imaging system is configured to perform dynamic imaging of obtaining a dynamic image constituted of multiple frames by irradiating a subject with radiation by the radiation source and detecting the radiation passing through the subject by the radiation detector. The hardware processor controls the radiation source and the radiation detector to operate in an intermittent imaging mode in which dynamic imaging is performed multiple times from one time of imaging start to one time of imaging end, based on a specified imaging period and a specified imaging suspension period.