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A method and device for judging a coincidence event

A technology for determining methods and events, applied in the medical field, can solve the problems of reducing efficiency, increasing storage space occupation and time consumption, and degrading the performance of PET equipment, and achieving the effect of improving efficiency.

Active Publication Date: 2018-09-18
SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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Problems solved by technology

However, as the time accuracy of PET equipment is getting higher and higher, the amount of event information collected by the detectors has increased significantly. If the storage method is still used to implement sorting, the occupation of storage space and time consumption will increase significantly, which will be seriously reduced. The efficiency of the entire coincidence event determination process, which makes the performance of PET equipment degraded

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  • A method and device for judging a coincidence event
  • A method and device for judging a coincidence event
  • A method and device for judging a coincidence event

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Embodiment Construction

[0025] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0026] As the time accuracy of PET equipment is getting higher and higher, the amount of event data collected by the detector has increased significantly. In order to increase the processing speed of the coincidence process, the present disclosure provides a coincidence event determination method, which can process the coincidence process at a high speed even in the case of a large amo...

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Abstract

A method for determining a pair of compliance events is provided. A set of event data collected by a PET detector may be divided into N sub-sets, and each of the N sub-sets of event data may be sorted according to an occurrence time of each event included in the event data, wherein N is an integer greater than or equal to 2. A K stage heapsort may be performed on the sorted N sub-sets of event data according to the occurrence time of each event, so as to sequentially output data of each event in the sorting order, wherein K is an integer greater than or equal to 1. A time compliance determination and a space compliance determination may be performed on the sequentially-outputted event data, and a pair of compliance events may be determined if both the time compliance determination and the space compliance determination are passed.

Description

technical field [0001] The present disclosure relates to the field of medical technology, in particular to a method and device for judging a coincidence event. Background technique [0002] Positron Emission Tomograph (PET) equipment is an advanced molecular imaging equipment. When using PET, it can inject tracers containing positron nuclides into the human body. The positron e+ released in the human body annihilates with the negative electron e- in the human body environment, producing a pair of gamma photons with equal energy (511KeV) and opposite propagation directions (about 180 degrees). This is the positron annihilation event. The detector of the PET device can detect the gamma photon pair generated by the above-mentioned annihilation event. Generally, the detection of the gamma photon by the detector is called the detection of an event, and the two gamma photons originating from the same positron annihilation event Corresponding events are referred to as a pair of co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
CPCG01T1/2985G06F7/24G06F7/36
Inventor 尹柱霞王治国张国旭梁国栋杨龙
Owner SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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