Scintillator Detection Apparatus Using Temporal Signal Separation
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Solution Overview
Problem
Existing radiation detection systems for computed tomography require complex detector constructions due to the need for separate scintillation light detection units for different scintillators, leading to increased complexity and costs.
Innovation Solution
A detection apparatus using a single scintillation light detection unit that applies different determination processes to generate distinct detection values from first and second scintillation lights with different temporal behaviors, allowing for energy discrimination without separate detection units, enabling a simpler detector construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate scintillation light detection units are used for each scintillator, then detection precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple scintillation light detection units into a single shared detection unit that detects light from multiple scintillators simultaneously. This merging approach reduces device complexity while maintaining detection precision through subsequent signal separation techniques based on temporal behavior differences.
Solution Approach 2:
The patent segments the detection process into two stages: first, combined light detection by a shared detection unit; second, signal separation based on temporal behavior characteristics. This segmentation allows one detection unit to effectively perform the function of multiple separate units while reducing hardware complexity.
2Device complexity
If a single scintillation light detection unit is used, then device complexity is reduced, but detection precision deteriorates
Solution Approach 1:
The patent utilizes the dynamic temporal behavior differences of scintillation light from different scintillators. By analyzing the time-dependent characteristics of the combined signal, the system can distinguish and separately evaluate signals from different scintillators, maintaining detection precision despite using a single static detection unit.
Solution Approach 2:
The patent changes the temporal parameter (time behavior) as the distinguishing feature for signal separation. By monitoring how the scintillation light intensity changes over time and utilizing the different decay characteristics of different scintillators, the system achieves precise detection with a single detection unit.
3Measurement precision
If separate detection units are arranged at side surfaces of scintillators, then detection precision is improved, but ease of manufacture deteriorates
Solution Approach 1:
The patent makes the single scintillation light detection unit universal by enabling it to detect light from multiple different scintillators simultaneously. This multi-functional detection unit eliminates the need for separate side-surface arrangements, significantly simplifying the manufacturing process while maintaining the ability to distinguish signals from different scintillators through temporal analysis.
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 efficient detection of radiation with a technically less complex detector construction, allowing for spectrally different signals to be generated and used for energy discrimination, reducing manufacturing costs and complexity.
Implementation Method 1
a first scintillator for generating first scintillation light depending on the radiation, wherein the first scintillation light has a first temporal behavior
Implementation Method 2
a second scintillator for generating second scintillation light depending on the radiation, wherein the second scintillation light has a second temporal behavior being different to the first temporal behavior
Data Source
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AI summary
Detection apparatus for detecting radiation The invention relates to a detection apparatus for detecting radiation. The detection apparatus comprises at least two scintillators (14, 15) having different temporal behaviors, each generating scintillation light upon reception of radiation, wherein the generated scintillation light is commonly detected by a scintillation light detection unit (16), thereby generating a common light detection signal. A detection values determining unit determines first detection values by applying a first determination process and second detection values by applying a second determination process, which is different to the first determination process, on the detection signal. The first determination process includes frequency filtering the detection signal. Since the scintillation light of the different scintilla- tors is collectively detected by the same scintillation light detection unit, detection arrangements with, for example, side-looking photodiodes for separately detecting the different scintillation light of the different scintillators are not necessarily required, thereby reducing the technical complexity of the detection apparatus.