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A method and device for constructing a phase image

A phase image and phase technology, applied in the field of medical equipment, can solve the problem of high noise in the phase image, achieve good diagnosis and reduce noise

Active Publication Date: 2019-03-08
赛诺联合医疗科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, when reconstructing the phase image of a certain phase, the phase image of the phase is constructed by using the collected data collected in the phase, so that the noise of the constructed phase image is relatively high

Method used

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  • A method and device for constructing a phase image
  • A method and device for constructing a phase image
  • A method and device for constructing a phase image

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Experimental program
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Embodiment 1

[0061] see Figure 1-3 , an embodiment of the present invention provides a method for constructing a phase image, the method comprising:

[0062] Step 101: Determine the collected data of each detector pair in the detector pair set within one motion cycle.

[0063] Step 102: Construct a transformation matrix of the tth phase, which is used to convert the phase image corresponding to the target phase into a phase image of the tth phase, the target phase is one of the T phases, t=0, 1, 2...T-1.

[0064] Step 103: Construct a transformation relationship for reflecting the noise-free image of the t-th phase and the target phase according to the transformation matrix of each phase.

[0065] Step 104: Construct a phase image according to the collected data of each detector pair in the detector pair set and the constructed conversion relationship.

[0066] Optionally, the above step 102 may be:

[0067] 1021: Obtain the CT image of the t-th phase and the CT image of the target ph...

Embodiment 2

[0081] An embodiment of the present invention provides a method for constructing a phase image. The execution subject of this embodiment may be the processing terminal introduced in the above embodiments, and the construction method is executed after the patient is scanned with PET equipment. see diagram 2-1 , the method includes:

[0082] Step 201: Determine the collected data of each detector pair in the detector pair set within one motion cycle.

[0083] Among them, in the process of scanning the patient, since the processing terminal records information such as the identification information of each detector pair in each detector pair set and the time when each detector pair receives the gamma photon pair, it can be determined from the recorded data that Count the number of gamma photon pairs received by each detector pair at the time each detector pair receives the gamma photon pair in a certain motion cycle, and obtain the data collected by each detector pair in the m...

Embodiment 3

[0123] see image 3 , an embodiment of the present invention provides a device 300 for constructing a phase image, and the device 300 includes:

[0124] A determining module 301, configured to determine the collected data of each detector pair in the detector pair set within one movement cycle;

[0125] The first construction module 302 is configured to construct a transformation matrix of the tth phase, the transformation matrix is ​​used to convert the target phase image corresponding to the target phase into the phase image of the tth phase, and the target phase is T One of the phases, t=0, 1, 2...T-1;

[0126] The second construction module 303 is configured to construct a transformation relationship for reflecting the noise-free image of the tth phase and the target phase according to the transformation matrix of each phase;

[0127] The second construction module 304 is configured to construct a phase image according to the collected data of each detector pair in the d...

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Abstract

The invention discloses a phase image constructing method and apparatus and belongs to the field of medical appliances. The method comprises the following steps: determining acquisition data of a detector for each detection pair in a set in one motion period; constructing a conversion matrix of a t-th phase, wherein the conversion matrix is used for converting a target phase image corresponding to a target phase into a phase image of the t-th phase, the target phase is one phase among T phases, and t=0, 1, 2 ...T-1; according to the conversion matrix of each phase, constructing a conversion relation used for reflecting conversion between the t-th phase and the target phase; and according to the acquisition data of the detector for each detector pair in the set and the constructed conversion relation, constructing a phase image. The apparatus comprises a determining module, a first construction module, a second construction module and a third construction module. The method and apparatus can reduce noise of the constructed phase image.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a method and device for constructing a phase image. Background technique [0002] PET / CT (Positron emission tomography / Computed tomography, Positron emission tomography / X-ray computed tomography) equipment is a high-end nuclear medicine imaging diagnostic equipment, which includes PET equipment and CT equipment. PET equipment is used to construct images of lesions in human organs, and CT equipment is used to take CT images of the human body, so that doctors can find lesions early, accurately locate lesions, and help doctors diagnose diseases based on the CT images and combined with the images of lesions. [0003] At present, when constructing a lesion image, the PET device first scans the patient for multiple motion cycles, and each motion cycle is divided into T phases, and then according to the collected data collected by the PET device in the tth phase of each motion cycle, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00A61B6/00A61B6/03
CPCA61B6/032A61B6/037A61B6/5235G06T7/0012G06T2207/10081G06T2207/10104
Inventor 李楠朱程
Owner 赛诺联合医疗科技(北京)有限公司