Crystal arrays and detector ring used for PET detector and PET detector
A crystal array and detector ring technology, applied in the field of medical devices, can solve the problems of reducing the accuracy of detection devices, reducing the spatial resolution performance, time resolution performance and energy resolution performance of PET detectors, etc.
Pending Publication Date: 2019-10-25
SHENYANG NEUSOFT MEDICAL SYST CO LTD
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[0002] Existing PET detectors contain multiple crystal arrays, and scintillation crystals that capture gamma photons are arranged in the crystal arrays. The scintillation crystals convert captured gamma photons into visible light photons. The scintillation crystals have multiple surfaces, including The coupling surface and other side surfaces of the device, the side surface of each scintillation crystal is covered with a reflective layer, the reflective layer can prevent visible light photons from entering the adjacent scintillation crystal, but the reflective layer will absorb the photons emitted in the scintillation crystal, and detect The photons detected by the device are only a part of the photons emitted by the scintillation crystal, which reduces the detection accuracy of the detection device and reduces the spatial resolution performance, time resolution performance and energy resolution performance of the PET detector.
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[0041] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with some aspects of the invention as recited in the appended claims.
[0042] The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "an...
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The invention discloses crystal arrays and a detector ring used for a PET detector and the PET detector. The crystal arrays comprise a plurality of scintillation crystals, the surfaces of the scintillation crystals are smooth, adjacent scintillation crystals are arranged at intervals, and spacers are arranged in gaps of the adjacent scintillation crystals; the detector ring comprises a plurality of detection units, the detection units comprise detection devices and crystal arrays, and the detection devices are used for detecting information emitted by the crystal arrays; and the PET detector comprises the detector ring for the PET detector. Through the above arrangement, adjacent scintillation crystals in the crystal array can be coupled through air and spacers, so that the light output ofthe crystal arrays is increased, and the spatial resolution performance, the time resolution performance and the energy resolution performance of the PET detector are improved.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to a crystal array, a detector ring and a PET detector for a PET detector. Background technique [0002] Existing PET detectors include a plurality of crystal arrays. The crystal arrays are arranged with scintillation crystals that capture gamma photons. The scintillation crystals convert the captured gamma photons into visible light photons. On the coupling surface and other side surfaces of the device, the side surface of each scintillation crystal is covered with a reflective layer. The reflective layer can prevent visible light photons from entering the adjacent scintillation crystals, but the reflective layer will absorb the photons emitted in the scintillation crystal and detect. The photons detected by the device are only a part of the photons emitted by the scintillation crystal, thereby reducing the detection accuracy of the detection device and reducing the spatial...
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Login to View More IPC IPC(8): A61B6/03
CPCA61B6/037A61B6/4208
Inventor 王希徐保伟赵健李新颖梁国栋
Owner SHENYANG NEUSOFT MEDICAL SYST CO LTD