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A kind of online preprocessing method and device of flat pet system

A preprocessing device and preprocessing technology, applied in the field of medical imaging, can solve problems such as the speed of reading and writing cannot keep up, data loss, and impact on the imaging quality of the PET system, and achieve the effect of solving the problem of excessive data volume and improving efficiency

Active Publication Date: 2020-11-17
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional preprocessing method of flat-panel PET is based on the offline data saved to the hard disk. When the activity of the radioactive source is large (about 500uCi), there are a large number of single events. If the transmission speed is not increased, some data may be lost, which will have a greater impact on the overall imaging quality of the PET system

Method used

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  • A kind of online preprocessing method and device of flat pet system
  • A kind of online preprocessing method and device of flat pet system
  • A kind of online preprocessing method and device of flat pet system

Examples

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Embodiment 1

[0046] See figure 1 , figure 1It is a structural schematic diagram of a flat PET system provided by an embodiment of the present invention. The flat panel PET system of this embodiment includes a detector module 1 , an online preprocessing module 2 and an image reconstruction module 3 connected in sequence. The detector module 1 is used to receive gamma photons, and generate and send raw data containing gamma photon information, where the raw data is a set of 16 bytes of data, including information such as incident time, position and energy of gamma photons. In this embodiment, the detector module 1 includes four detectors, and the four detectors form a rectangular structure, and each detector is respectively placed on a corner of the rectangular structure. The online preprocessing module 2 is used to receive the original data and store it in blocks in the memory space of a PC (personal computer), then perform real-time preprocessing on the data in the memory space, and fina...

Embodiment 2

[0074] See image 3 , image 3 It is a detailed flowchart of an online pretreatment method of a flat PET system provided by an embodiment of the present invention.

[0075] In this example, the radionuclide-containing 18 The EP tube (microcentrifuge tube) of F-FDG is scanned, and the activity is 500uCi during scanning. Use four detectors, arranged in pairs, and place the EP tube in the center of the field of view of a pair of detectors.

[0076] The specific steps of the online preprocessing method of the present embodiment are as follows:

[0077] Step 1: Set relevant parameters;

[0078] Specifically, two timers t1 and t2 are set, which are respectively used to control the time interval T of collecting raw data G and total acquisition time T C , where the set acquisition time interval T G is 60 seconds, the total acquisition time T C for 10 minutes. In this embodiment, the flat-panel PET system includes four detectors, and each detector is provided with two memory s...

Embodiment 3

[0090] On the basis of the above embodiments, this embodiment provides an online pretreatment device for a flat PET system, please refer to Figure 5 , Figure 5 It is a block diagram of an online pretreatment device of a flat PET system provided by an embodiment of the present invention. The online pretreatment device includes:

[0091] Parameter setting module 101, for setting the time interval of data collection and total collection time;

[0092] A data collection module 102, configured to collect data according to the time interval and the total collection time;

[0093] The data preprocessing module 103 is configured to store the data into the memory space and perform online preprocessing to generate preprocessed forward data.

[0094] Further, the parameter setting module 101 includes a first timer and a second timer, wherein the first timer is used to set the time interval; the second timer is used to set the total collection time. In this embodiment, the time int...

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Abstract

The invention relates to an on-line preprocessing method of a flat panel PET system. The method comprises the following steps: a memory space for storing original data, a time interval for collectingthe original data and a total collection time are set; collecting raw data according to the time interval and the total acquisition time; the original data being stored in the memory space and subjected to on-line preprocessing to generate the preprocessed forward data. The device comprises a parameter setting module, a data acquisition module and a data preprocessing module. The on-line preprocessing method of the invention reads the original data received by the detector into the computer memory, because the memory can read and write at any time, the read and write speed is much faster thanthe hard disk, so for the high activity source, it can ensure to collect as complete information as possible, and solve the problem of large amount of lost data in the process of off-line method acquisition, which is caused by the program catton.

Description

technical field [0001] The invention belongs to the technical field of medical imaging, and in particular relates to an online preprocessing method and device for a flat-panel PET system. Background technique [0002] PET (Positron Emission Tomography, Positron Emission Tomography) is a non-invasive in vivo functional imaging technology, widely used in clinical examination and biological research. The core of the PET imaging principle is that radioactive compounds participate in the physiological activities in the human body, and the radioactive compounds emit rays, which are detected by detection devices distributed around the human body, so that the distribution and flow of important basic substances in the living body can be tracked. Common in PET 18 F imaging as an example, 18 F-FDG is an analogue of glucose, which is taken up into cells in the same way as glucose, and injected into the human body 18 The image produced by F reflects the distribution level of glucose m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06A61B6/03
CPCA61B6/037G06F3/0611G06F3/0619G06F3/064
Inventor 朱守平时煜毛烨孟凡珍李亮
Owner XIDIAN UNIV
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