Gamma ray imaging detector and gamma ray imaging detector system having same
An imaging detector and gamma ray technology, applied in the field of gamma ray imaging, can solve the problems of poor boundary resolution and distribution changes of detectors, and achieve the effect of improving spatial resolution and field of view
Active Publication Date: 2015-07-22
BEIJING NOVEL MEDICAL EQUIP LTD
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Problems solved by technology
[0003] In order to improve the spatial resolution of the detector, scintillation detectors in the related art often adopt the method of splicing small-sized discrete crystal units into a scintillation crystal array. However, with the emergence of position-sensitive photodetectors, the scintillation detectors in the related art also It is possible to use a continuous large scintillation crystal array coupled with a small-unit optoelectronic device array, and use a multi-channel signal readout method to estimate the action position of the ray according to the light distribution model to obtain the three-dimensional position information of the event. However, photons in the continuous The phenomenon of reflection back from the side boundaries of the crystal will cause the distribution to change, resulting in poor boundary resolution of the detector
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[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself...
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The present invention discloses a gamma ray imaging detector and a gamma ray imaging detector system having the same. The gamma ray imaging detector comprises a scintillation crystal array and a photoelectric detector, wherein the scintillation crystal array comprises a continuous crystal unit and a plurality of discrete crystal units, the plurality of discrete crystal units are connected in sequence, the plurality of discrete crystal units are arranged on the outer side of the continuous crystal unit, the photoelectric detector is arranged on one side of the scintillation crystal array, and the photoelectric detector is coupled with the scintillation crystal array. According to the gamma ray imaging detector disclosed by the invention, the plurality of discrete crystal units are arranged on the outer side of the continuous crystal unit, to improve the spatial resolution and the visual field of the gamma ray imaging detector.
Description
technical field [0001] The present invention relates to the technical field of gamma ray imaging, in particular to a gamma ray imaging detector and a gamma ray imaging detector system having the same. Background technique [0002] It is pointed out in related technologies that scintillation detectors are widely used in the field of gamma ray detection. The principle is to deposit energy through the interaction between rays and scintillation crystals, and the crystals de-excite to generate visible photons, which propagate in a certain distribution and path, thereby being detected by photoelectric The detector detects, and then converts it into an electrical signal, which is used for energy discrimination and position positioning of the rays. [0003] In order to improve the spatial resolution of the detector, scintillation detectors in the related art often adopt the method of splicing small-sized discrete crystal units into a scintillation crystal array. However, with the em...
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Inventor 魏清阳马天予江年铭刘亚强王石刘迈
Owner BEIJING NOVEL MEDICAL EQUIP LTD