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Method and apparatus to recognize the position of detector crystal unit

A technology of crystal unit and detector, applied in the field of nuclear medicine, can solve the problem of inaccurate identification of crystal unit position, and achieve the effect of accurate identification

Active Publication Date: 2014-04-23
SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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Problems solved by technology

[0007] The technical problem to be solved in this application is to provide a method and device for identifying the position of the detector crystal unit, so as to solve the problem of segmenting the position scatter diagram according to the prior art using the midpoint of the distance between adjacent peak points as the valley point The resulting technical problem of inaccurate crystal unit position identification

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  • Method and apparatus to recognize the position of detector crystal unit
  • Method and apparatus to recognize the position of detector crystal unit

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Embodiment Construction

[0064] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0065] In this article, the "crystal unit position" involved refers to the coordinate range corresponding to each crystal unit on the detector in the two-dimensional position scatter diagram, where the position scatter diagram represents the image of the photon incident position , in the embodiment of the present application specifically refers to the image formed ...

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Abstract

The invention discloses a method and apparatus to recognize the position of a detector crystal unit. The method includes the steps of: gaining a generated location scatter diagram based on a radiation source detector; calculating a peak point in the location scatter diagram and identifying an initial valley point based on two adjacent peak points; conducting a first segmentation to the location scatter diagram based on the peak point and the initial valley point to identify an initial boundary of the crystal unit; respectively conducting a gray level projection to the image region of the initial boundary inner of each row and each column crystal unit to obtain a grey level projection curve of each row and each column crystal unit; identifying a target valley point based on the minimum point in the grey level projection curve of each row and each column crystal unit; conducting a second segmentation to the location scatter diagram based on the peak point and the valley point, so as to identify a target boundary of each crystal unit. The method and apparatus to recognize the position of the detector crystal unit are possible to avoid the inaccuracy of the valley point caused by the inconformity of physical characteristics of each crystal unit, thereby accurately recognize the location of each crystal unit.

Description

technical field [0001] The present application relates to the field of nuclear medicine, in particular to a method and device for identifying the position of a detector crystal of nuclear medicine equipment. Background technique [0002] Nuclear medicine equipment is currently commonly used detection equipment in medicine, for example, single electron emission computed tomography (SPECT) equipment, positron emission computed tomography (PET) equipment, etc. Nuclear medicine equipment can form an image of the distribution of drugs containing radionuclides in the body, which can reflect human metabolism, tissue function, and structural form. [0003] In nuclear medicine equipment, the core component is the detector, which is used to detect the radiation (such as gamma rays) emitted by radionuclides introduced into the patient's body. Such as figure 1 As shown, the commonly used nuclear medicine equipment detector includes a crystal array composed of multiple crystal units an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10G06K3/00
Inventor 支力佳鞠光亮周楹君吴国城
Owner SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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