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A novel scintillation detector array and associate signal processing method for gamma ray detection with encoding the energy, position, and time coordinates of the interaction

A technology of detectors and scintillators, which can be used in measuring devices, radiation measurement, radiation intensity measurement, etc., and can solve problems such as poor system performance design

Inactive Publication Date: 2010-07-07
王宇
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  • Abstract
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Problems solved by technology

Despite these changes, continuous monolithic Tl-doped NaI detectors are still inferior in system performance to dedicated PET detector designs

Method used

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  • A novel scintillation detector array and associate signal processing method for gamma ray detection with encoding the energy, position, and time coordinates of the interaction
  • A novel scintillation detector array and associate signal processing method for gamma ray detection with encoding the energy, position, and time coordinates of the interaction
  • A novel scintillation detector array and associate signal processing method for gamma ray detection with encoding the energy, position, and time coordinates of the interaction

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Embodiment Construction

[0035] Various embodiments of the invention relate to detectors and corresponding instrumentation that can determine the energy, location, and timing of scintillation light produced by the interaction of gamma rays with a scintillator, including one or more scintillator materials. Some of these embodiments relate to gamma ray detector arrays comprising scintillator detectors (for generating light from gamma rays) coupled to photosensitive detectors (for collecting and measuring scintillation light produced in function and produce flickering light). Certain scintillator detectors are coupled to photosensitive detectors by light guides, which may or may not be segmented. Furthermore, the light guide can also be active (with scintillation light generating capability) or passive (without scintillation light generating capability). "Segmented" or "non-segmented" here means whether the light guide has barriers and / or optical media which define slots. Segmented gaps can have light ...

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Abstract

A gamma ray detector module includes at least one scintillation detector configured to operate in a dot-decoding mode, or at least two scintillation detectors configured to operate in a line-decoding mode, wherein the at least one scintillation detector is each coupled to a single photodetector, and wherein the at least two scintillation detectors are coupled to at least two photodetectors arranged substantially along a line; and at least four scintillation detectors configured to operate in a plane-decoding mode, wherein the at least four scintillation detectors are coupled to a plurality of photodetectors arranged in a two-dimensional array.

Description

Background technique [0001] Techniques and instruments for studying the composition and function of a test object by detecting the distribution of gamma rays passing through or emitted by the test body are widely known. These devices are commonly used in emission computed tomography, which can be divided into two specific categories: single emission photon computed tomography (SPECT), which uses radiotracers that emit gamma rays but not positrons; Electron emission tomography (PET), which uses radioactive tracers that emit positrons. The basic physical difference between the two techniques is that PET uses annihilation coincidence detection, while SPECT does not. [0002] PET enables the determination of biochemical functions in living organisms after the injection of positron-emitting biochemical radiotracers into the living body. The positrons annihilate with surrounding electrons in the target volume to generate a pair of gamma rays, each with a photon energy of 511 keV, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/20
CPCG01T1/1644G01T1/1642A61B6/037
Inventor 王宇
Owner 王宇
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