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Method and system for synchronizing single event list data in positron emission tomography (PET)

A tabular data and single-event technology, applied in image data processing, radiation measurement, projection reproduction, etc., can solve problems such as increasing system design costs

Active Publication Date: 2012-11-21
NANJING RAYCAN INFORMATION TECH
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Problems solved by technology

But this method has additional requirements on hardware, which increases the cost of system design

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  • Method and system for synchronizing single event list data in positron emission tomography (PET)
  • Method and system for synchronizing single event list data in positron emission tomography (PET)
  • Method and system for synchronizing single event list data in positron emission tomography (PET)

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Embodiment Construction

[0073] The invention discloses a method and system for synchronizing single-event tabular data in PET imaging, which are used for each basic detection module in PET imaging to work under a local clock reference source without the participation of hardware synchronization signals. Single event list data is synchronized in time. This method can effectively and accurately complete the synchronization of single-event list data, accurately extract the matching events, and greatly simplify the complexity of the system hardware design, and increase the flexibility, scalability and maintainability of the system.

[0074] The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, ...

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Abstract

The invention discloses a method and a system for synchronizing single event list data in positron emission tomography (PET). The method includes that at first, single event list data of each independent working detecting module is obtained, probability density of an occurrence time interval of a single event in each detecting module is calculated, and initial parameters are set; then iteration peak seeking and classification time window peak seeking are used for determining initial detecting time difference values of all detecting modules; and finally the difference values are used for conducting synchronous correction and fitting screening on single event data in each detecting module. The invention further discloses a system for synchronizing the single event list data in the PET. The system comprises a data obtaining and frequency difference compensation module, an initial parameter setting module, a rough time scale fitting module, a fine time scale fitting module and a data synchronization correction and fitting screening module. The method and the system for synchronizing the single event list data in the PET can finish synchronization of the single event list data effectively and accurately, simultaneously complexity of system hardware design is greatly simplified, and flexibility, expansibility and adaptability of the system are improved.

Description

Technical field [0001] The present invention relates to the technical field of radiation detection imaging, in particular to a method and system for synchronizing single-event tabular data in positron emission tomography. Background technique [0002] Positron Emission Tomography (Positron Emission Tomography, hereinafter referred to as PET) is a non-invasive imaging method. The basic principle of its imaging is to label the positron radionuclide on the molecular probe. When the positron generated by the decay of the radionuclide collides with the negative electron in the organism and annihilates, it emits a pair of energy of 511 KeV, and the direction of motion is approximately opposite. Of gamma photons. PET uses a ring-shaped position-sensitive radiation detector surrounding the organism to convert the incident gamma photons into electrical signals, thereby obtaining their energy, location and time information. Through the annihilation coincidence technology, the position of...

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Application Information

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IPC IPC(8): A61B6/03
CPCA61B6/037G01T1/2985G06T11/00A61B6/03G06T11/006
Inventor 谢庆国陈源宝陈忻朱俊吴中毅王璐瑶
Owner NANJING RAYCAN INFORMATION TECH
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