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Partitioning method for position information of PET detector and computer readable storage medium

A technology of location information and detectors, applied in the field of location information partitioning methods and computer-readable storage media, can solve the problems of difficult adjustment and evaluation, partition point errors, etc., and achieve accurate location judgment, strong theoretical basis and strong evaluation Effect

Pending Publication Date: 2021-06-01
FMI MEDICAL SYST CO LTD
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Problems solved by technology

When the statistical characteristics of position coding do not obey the Gaussian distribution (the symmetry is not good), the selection of partition points will cause certain errors; or more experience and results are used for optimization, and adjustment and evaluation are not easy to carry out

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  • Partitioning method for position information of PET detector and computer readable storage medium
  • Partitioning method for position information of PET detector and computer readable storage medium
  • Partitioning method for position information of PET detector and computer readable storage medium

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Embodiment Construction

[0028] The advantages of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0029] 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.

[0030] The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular...

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Abstract

The invention provides a partitioning method for position information of a PET detector and a computer readable storage medium. The method comprises: normalizing and correcting the position information to an n-bit value range, pre-dividing local areas according to peaks and valleys, finding local gravity centers in all the areas, constructing a delaunay triangular network according to the gravity centers, and finally completing voronoi partitioning. The voronoi partitioning method is used for distinguishing, boundary lines of all the regions have the equal division characteristic in space subdivision, and position judgment is more accurate; and on the basis of theoretical data and experience, through an optimization process, the theoretical basis and the evaluability of the method are stronger.

Description

technical field [0001] The invention relates to the field of PET detector counting, in particular to a method for partitioning position information of PET detectors and a computer-readable storage medium. Background technique [0002] Positron Emission Tomography (PET) uses scintillation crystals (such as BGO or LYSO) to convert gamma rays released by radioactive sources into visible light, and then uses photoelectric conversion devices (SiPM or PMT) to convert visible light into Analog electrical signal. The front-end circuit processes the analog electrical signal, and sends it to the FPGA for high-precision energy, time, and position measurement and correction, and then packages and uploads the measurement results to the back-end data acquisition system (Data acquisition, DAQ) for matching judgment . Finally, the image of the radioactive source is reconstructed by using the time difference of multiple events of the effective signal on the coincidence line. [0003] A PE...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/00G06T5/40G06T7/66G06T7/70
CPCG06T11/003G06T5/40G06T7/66G06T7/70G06T2207/10104
Inventor 马聪李兴赵晓坤王武斌余李
Owner FMI MEDICAL SYST CO LTD
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