CN111728633B - PET system cross coincidence data processing method, device and computer equipment - Google Patents
PET system cross coincidence data processing method, device and computer equipment Download PDFInfo
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Abstract
The application relates to a PET system cross-coincidence data processing method, a device and computer equipment, wherein the PET system cross-coincidence data processing method comprises the following steps: the method comprises the steps of setting numbers in a PET system by the PET detection units, wherein each PET detection unit is provided with a unique number, acquiring cross coincidence data of the PET detection units corresponding to the two numbers according to the two numbers in the numbers, and displaying the cross coincidence data on a man-machine interaction interface, so that the problem of quality control and verification of the PET system with a plurality of PET detection units in the related art is solved.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a method, a device and computer equipment for processing PET system cross coincidence data.
Background
Positron emission computed tomography (Positron Emission Tomography, PET) is a three-dimensional imaging nondestructive detection technology which utilizes a compound marked by injecting positron radioactive isotopes into the organism to measure the spatial distribution and time characteristics of the compound in vitro, and has the characteristics of high sensitivity, good accuracy and accurate positioning.
The working principle of the PET system is as follows: labeling a positron-emitting radionuclide onto a compound capable of participating in a blood flow or metabolic process of human tissue, injecting the radionuclide labeled with the positron-emitting compound into a subject, and enabling the subject to perform PET imaging in an effective visual field of PET. During a PET scan, a positron emitted by a radionuclide moves about 1mm in the body and combines with a negative electron in tissue to generate annihilation radiation (i.e., annihilation event) that generates two gamma photons of equal energy and opposite direction. Because the distances of two gamma photons in the body are different, the time for reaching the two detection modules also has a certain difference, if a probe system positioned on a response line detects two photons which are 180 degrees (+ -0.25 degrees) each other in a specified time window (for example, 0-15 us), a coincidence event is formed, the processing equipment records the response data, and the data can obtain a required image through an image reconstruction technology.
In the related art, the display interface of the PET system displays the total count rate of the PET detection units to indicate the usage state of the PET system, however, when the PET system has a plurality of PET detection units, it is insufficient to display only the total count rate of the PET detection units, and it is necessary to count and display the count rate of each PET detection unit separately, so as to implement quality control and verification of the PET system having a plurality of PET detection units.
Disclosure of Invention
The embodiment of the application provides a method, a device and computer equipment for processing PET system cross coincidence data, which at least solve the problem of quality control and verification of a PET system with a plurality of PET detection units in the related technology.
In a first aspect, an embodiment of the present application provides a PET system cross-coincidence data processing method, where the method includes:
arranging a number in a PET system for each PET detection unit, wherein each PET detection unit corresponds to a unique number;
acquiring crossing coincidence data of PET detection units corresponding to two numbers according to the two numbers;
and displaying the cross coincidence data on a human-computer interaction interface.
In some of these embodiments, the storage and display mode of the cross-coincidence data is a chordal graph mode.
In some embodiments, after the human-machine interface displays the intersection coincidence data, the method further comprises:
and determining the working state of the PET detection unit according to the cross coincidence data.
In some embodiments, after the human-machine interface displays the intersection coincidence data, the method further comprises:
and determining whether clocks of the PET detection units are synchronous according to the cross coincidence data.
In some of these embodiments, determining whether clocks of the PET detection units are synchronized based on the cross-coincidence data comprises:
acquiring a fast coincidence counting rate and a delayed coincidence counting rate of a PET system;
respectively displaying the fast coincidence counting rate and the delay coincidence counting rate of the PET detection units corresponding to the two numbers;
and determining whether clocks of the PET detection units are synchronous according to the display results of the fast coincidence counting rate and the delay coincidence counting rate.
In some embodiments, after the human-machine interface displays the intersection coincidence data, the method further comprises:
and determining the position information of the scanning object in the PET system according to the cross coincidence data.
In some of these embodiments, determining positional information of a scan object in a PET system from the cross-coincidence data includes:
determining a PET detection unit as a reference unit, taking the radial central line of the reference unit as a base line, and selecting PET detection units with symmetrical base line sides;
and determining the position information of the scanning object in the PET system according to the cross coincidence data of the symmetrical PET detection units.
In a second aspect, embodiments of the present application provide a PET system cross-coincidence data processing apparatus, the apparatus comprising: an acquisition module and a display module;
the acquisition module is used for acquiring the crossing coincidence data of the PET detection units corresponding to two numbers according to the two numbers, wherein the numbers are preset for the PET detection units in the PET system, and each PET detection unit is provided with a unique number;
and the display module is used for displaying the cross coincidence data on a human-computer interaction interface.
In a third aspect, embodiments of the present application provide a PET system, the system comprising: a plurality of PET detection units, a gantry, a display, and a processor;
the plurality of PET detection units are arranged in the rack, the plurality of PET detection units are axially arranged, crossed coincidence data exist among the PET detection units, the PET detection units are provided with numbers in advance, and each PET detection unit is provided with a unique number;
the processor is respectively connected with the PET detection unit and the display; the method is used for completing the cross coincidence processing of any two PET detection units according to the detection data of the plurality of PET detection units; the processor is further used for acquiring the cross coincidence data of the PET detection units corresponding to the two numbers according to the two numbers in the numbers, and controlling the display to display the cross coincidence data.
In a fourth aspect, an embodiment of the present application provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the PET system cross-coincidence data processing method according to the first aspect when executing the computer program.
Compared with the related art, the method for processing the intersecting coincidence data of the PET system provided by the embodiment of the application has the advantages that the serial numbers are arranged in the PET system through the PET detection units, wherein each PET detection unit corresponds to a unique serial number, the intersecting coincidence data of the PET detection units corresponding to the two serial numbers are obtained according to the two serial numbers in the serial numbers, the intersecting coincidence data are displayed on a human-computer interaction interface, the problem that the PET long axis coincidence display mode of simple splicing in the related art is solved, the problem that the PET long axis coincidence display accuracy is low is solved, and the PET long axis coincidence display accuracy is improved.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a schematic illustration of the response line between the detectors within a single PET detection unit;
FIG. 2 is a schematic illustration of a response line between a plurality of PET detection units in a PET system having a plurality of PET detection units in accordance with the present application;
FIG. 3 is a flow chart diagram of a method of processing cross-coincidence data for a PET system in accordance with an embodiment of the present application;
FIG. 4 is a second flowchart of a method of PET system cross-coincidence data processing in accordance with an embodiment of the present application;
FIG. 5 is a third flowchart of a method of PET system cross-coincidence data processing in accordance with an embodiment of the present application;
FIG. 6 is a flow chart of a method of determining whether clocks of PET detection units are synchronized based on cross coincidence data in accordance with an embodiment of the present application;
FIG. 7 is a flowchart fourth of a method of PET system cross-coincidence data processing in accordance with an embodiment of the present application;
FIG. 8 is a flowchart of a method of determining positional information of a scan object in a PET system from cross-coincidence data in accordance with an embodiment of the present application;
FIG. 9 is a block diagram of a PET system cross-coincidence data processing device in accordance with an embodiment of the present application;
FIG. 10 is a block diagram of a PET system according to an embodiment of the present application;
fig. 11 is a schematic diagram of an internal structure of a computer device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described and illustrated below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on the embodiments provided herein, are intended to be within the scope of the present application.
It is apparent that the drawings in the following description are only some examples or embodiments of the present application, and it is possible for those of ordinary skill in the art to apply the present application to other similar situations according to these drawings without inventive effort. Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by those of ordinary skill in the art that the embodiments described herein can be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar terms herein do not denote a limitation of quantity, but rather denote the singular or plural. The terms "comprising," "including," "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein refers to two or more. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The terms "first," "second," "third," and the like, as used herein, are merely distinguishing between similar objects and not representing a particular ordering of objects.
In an embodiment of the present application, the PET system includes a plurality of PET detection units, each PET detection unit includes a plurality of detection modules, the plurality of detection modules are annularly arranged to form one PET detection unit, and the plurality of PET detection units are axially arranged to form a detection subsystem of the PET system. Fig. 1 is a schematic diagram of response lines between detection modules in a single PET detection unit, as shown in fig. 1, in which one PET detection unit includes a plurality of detection modules, a coincidence processing device of a conventional PET system can only process coincidence judgment between data of each detection module in one PET detection unit, and then the PET system generally displays coincidence judgment between data of each detection module in the PET detection unit, that is, a coincidence principle of a conventional PET.
FIG. 2 is a schematic diagram of response lines between a plurality of PET detection units in a PET system having a plurality of PET detection units in the application, as shown in FIG. 2, for the PET system of the application, coincidence events between different PET detection units exist, namely cross coincidence, for example, if a pair of gamma photons are incident to a PET detection unit U0 and a PET detection unit U3 of the PET system, if cross coincidence is not considered, cross coincidence data between the PET detection unit U0 and the PET detection unit U3 can be lost and can not be recorded, the PET system becomes simple stitching of the plurality of PET detection units, and the axial field of view is prolonged, but the cross coincidence data is lost, and the spatial resolution of the PET system is reduced; according to the PET system cross coincidence data processing method, the PET detection units are provided with the numbers in the PET system, wherein each PET detection unit is provided with the unique number, the cross coincidence data of the PET detection units corresponding to the two numbers are acquired according to the two numbers in the numbers, and the cross coincidence data are displayed on the man-machine interaction interface, so that the problem that quality control and verification of the PET system with a plurality of PET detection units in the related art are solved.
The embodiment provides a PET system cross-coincidence data processing method, fig. 3 is a flowchart of a PET system cross-coincidence data processing method according to an embodiment of the present application, as shown in fig. 3, and the method includes the following steps:
step S301, numbering PET detection units in a PET system, wherein each PET detection unit corresponds to a unique number;
it should be noted that, a plurality of PET detecting units are arranged in the PET system, and are axially arranged, each PET detecting unit is internally composed of a plurality of detecting modules, and a pair of detecting modules in one PET detecting unit generates a unit internal coincidence event; a cross coincidence event is generated between the PET detection units which are axially arranged, for example, a cross coincidence event is generated by a detection module between the detection module of the PET detection unit U0 and the detection module of the PET detection unit U3, so that the PET system needs to complete cross coincidence event data acquisition while completing intra-unit coincidence event data acquisition.
Step S302, acquiring crossing coincidence data of PET detection units corresponding to two numbers according to the two numbers;
it can be understood that, in the case that the user inputs two numbers through the man-machine interaction interface, the intersecting coincidence data of the PET detection UNITs corresponding to the two numbers may be obtained according to the two numbers, for example, in the case that the user inputs U1 and U5 through the man-machine interaction interface, the intersecting coincidence data between the PET detection UNITs UNIT1 and the PET detection UNITs UNIT5 is obtained according to the U1 and U5. For another example, under the condition that the user inputs U2 and U4 through the human-computer interaction interface, the cross coincidence data between the PET detection UNIT UNIT2 and the PET detection UNIT UNIT4 is obtained according to the U2 and the U4.
Step S303, displaying the cross coincidence data on a human-computer interaction interface;
under the condition that a user inputs U1 and U5 through a human-computer interaction interface, acquiring crossing coincidence data between the PET detection UNIT UNIT1 and the PET detection UNIT UNIT5 according to the U1 and the U5, and displaying the crossing coincidence data on the human-computer interaction interface.
Through steps S301 to S303, according to the numbers preset for the plurality of PET detection units in the PET system, the intersection coincidence data of the PET detection units corresponding to the two numbers can be obtained according to the two numbers, and the intersection coincidence data of the PET detection units corresponding to the numbers are displayed on the man-machine interaction interface, so that a user can control and verify the quality of the PET system according to the intersection coincidence data of the PET detection units.
In some of these embodiments, the storage and display mode of the cross-coincidence data is a chord graph mode; after receiving gamma photons, a detection subsystem in the PET system can obtain corresponding electric signals through photoelectric conversion, and after data processing is carried out on the electric signals, original data of PET scanning can be obtained; after the original data is analyzed and processed, the energy of the detected photon can be known, if the energy of the photon is higher than a preset energy threshold value, the photon is recorded as a single event, if the two single events meet the time coincidence, the two single events can be called a coincidence event, after the original data is traversed, PET coincidence event data can be obtained, the connection line between the crystals detecting the two single events, namely a response line, and a chord graph can reflect the attribute and the characteristic of the response line, so that the storage and display mode of the coincidence data in the embodiment is a chord graph mode, and whether the working state of a PET system is normal can be intuitively observed.
In some embodiments, fig. 4 is a second flowchart of a PET system cross-coincidence data processing method according to an embodiment of the present application, as shown in fig. 4, after the man-machine interface displays the cross-coincidence data, the method further includes the following steps:
step S401, determining the working state of the PET detection unit according to the cross coincidence data;
it should be noted that, because background radiation exists in the crystal inside the PET detection units, when the PET detection units are in a normal working state, the cross coincidence data between the PET detection units exist, and even if no scanning object exists, the cross coincidence data collected by the PET detection units at a certain time is greater than 0, so if the cross coincidence data between two PET detection units is 0, the working state of the PET detection units can be judged to be in an abnormal state.
Through step S401, it can be determined whether the operation of the current PET detection unit is abnormal according to the intersecting coincidence data between the two PET detection units, and the specific number and the actual position of the abnormal PET detection unit are calculated, so that the abnormal PET detection unit can be conveniently examined and diagnosed.
In some embodiments, fig. 5 is a flowchart III of a PET system cross-coincidence data processing method according to an embodiment of the present application, as shown in fig. 5, after the man-machine interface displays the cross-coincidence data, the method further includes the steps of:
step S501, determining whether clocks of the PET detection units are synchronous according to the cross coincidence data;
it should be noted that, among the plurality of PET detecting units in the PET system, each PET detecting unit has its own clock system, so that there may be a situation in which the clock systems are different among the plurality of PET detecting units, if the clock systems are different between two PET detecting units, the cross coincidence data between the two PET detecting units will be 0, so that the cross coincidence data between the two PET detecting units is 0, but if the two PET detecting units have coincidence data inside, it may be determined that the clocks of the two PET detecting units are not synchronized.
Through step S501, it may be determined whether the clocks of the PET detection units are synchronized according to the cross coincidence data, so as to adjust the clocks of the PET detection units with unsynchronized clocks, so as to improve the accuracy of the acquired cross coincidence data.
In some of these embodiments, fig. 6 is a flowchart of a method of determining whether clocks of PET detection units are synchronized based on cross-coincidence data, as shown in fig. 6, according to an embodiment of the present application, the method comprising the steps of:
step S601, acquiring a fast coincidence counting rate and a delayed coincidence counting rate of a PET system;
it should be noted that the fast coincidence count rate of the PET system may be understood as an instantaneous count rate, and the delayed coincidence count rate of the PET system may be understood as a coincidence count rate having a certain delay time.
Step S602, the fast coincidence count rate and the delayed coincidence count rate of the PET detecting units corresponding to the two numbers are displayed respectively.
Step S603, determining whether clocks of the PET detection units are synchronous according to display results of the fast coincidence counting rate and the delay coincidence counting rate;
if the fast coincidence count rate of the PET detection units corresponding to the two numbers has no data, but the delay coincidence count rate has data, it is indicated that the PET detection units corresponding to the two numbers are not clocked.
Through steps S601 to S603, whether the PET detection units corresponding to the two numbers are synchronous or not is determined according to the fast coincidence count rate and the delayed coincidence count rate of the PET detection units corresponding to the two numbers, so that the PET detection units with unsynchronized clocks can be adjusted, and the accuracy of the acquired intersecting coincidence data can be improved.
In some embodiments, fig. 7 is a flowchart of a PET system cross-coincidence data processing method according to an embodiment of the present application, as shown in fig. 7, after the man-machine interface displays the cross-coincidence data, the method further includes the following steps:
step S701, determining the position information of a scanning object in the PET system according to the cross coincidence data;
for example, the PET system includes eight PET detecting units, the eight PET detecting units are axially arranged, the number of the eight PET detecting units from the near to the far can be 0-7, the more the two PET detecting units are near to the scanning object, the larger the crossing coincidence data between the two PET detecting units is, if the current scanning object is near to the PET detecting Unit0, the crossing coincidence data of the pairing combination of the three sets of PET detecting units from the near to the far, namely Unit0-Unit1, unit0-Unit2 and Unit0-Unit3 is sequentially reduced, and then the position information of the current scanning object can be inferred according to the crossing coincidence data.
Through step S701, according to the intersecting coincidence data between every two combinations of PET detection units, the position information of the current scanning object can be inferred, so that a reminder is given when the current scanning object is not at the right middle position of the long axis PET.
In some of these embodiments, FIG. 8 is a flowchart of a method of determining positional information of a scanned object in a PET system from cross-coincidence data, in accordance with an embodiment of the present application, as shown in FIG. 8, including the steps of:
step S801, determining a PET detection unit as a reference unit, taking the radial center line of the reference unit as a base line, and selecting PET detection units with symmetrical base line sides;
step S802, determining the position information of a scanning object in a PET system according to the cross coincidence data of the symmetrical PET detection units;
for example, if the selected reference Unit is the PET detection Unit2, the intersection coincidence data of units 0-Unit2, 1-Unit2, and 2-Unit3, 2-Unit4 can be obtained, and if the intersection coincidence data of units 1-Unit2 and 2-Unit3, and 0-Unit2 and 2-Unit4 are the same or close, it can be determined that the current scan object is close to the PET detection Unit 2.
Through steps S801 to S802, the position information of the scanning object in the PET system is determined according to the intersecting coincidence data of the PET detection units symmetrical on both sides of the selected reference unit, so as to conveniently obtain the position of the scanning object in the PET system.
It should be noted that the steps illustrated in the above-described flow or flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order other than that illustrated herein.
The embodiment also provides a PET system cross-coincidence data processing device, which is used for implementing the foregoing embodiments and preferred embodiments, and is not described in detail. As used below, the terms "module," "unit," "sub-unit," and the like may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
Fig. 9 is a block diagram of a PET system cross-coincidence data processing device, as shown in fig. 9, according to an embodiment of the present application, including: an acquisition module 91 and a display module 92;
an obtaining module 91, configured to obtain intersecting coincidence data of PET detection units corresponding to two numbers according to two numbers in the numbers, where numbers are set in advance for the PET detection units in the PET system, and each PET detection unit is set with a unique number;
and the display module 92 is used for displaying the cross coincidence data on the man-machine interaction interface.
According to the PET system cross coincidence data processing device, the cross coincidence data of the PET detection units corresponding to the two numbers can be obtained according to the numbers preset in the PET system and further according to the two numbers, the cross coincidence data of the PET detection units corresponding to the numbers are displayed on the man-machine interaction interface, and quality control and verification of the PET system are facilitated for users according to the cross coincidence data of the PET detection units.
In some embodiments, the obtaining module 91 and the display module 92 are further configured to implement steps in the PET system cross-coincidence data processing method provided in the foregoing embodiments, which are not described herein.
The above-described respective modules may be functional modules or program modules, and may be implemented by software or hardware. For modules implemented in hardware, the various modules described above may be located in the same processor; or the above modules may be located in different processors in any combination.
The present application also provides a PET system, fig. 10 is a block diagram of the structure of the PET system according to an embodiment of the present application, the system including a plurality of PET detection units 101, a gantry, a processor 102, and a display 103;
the plurality of PET detection units 101 are arranged in the rack, the plurality of PET detection units 101 are axially arranged, crossed coincidence data exist among the PET detection units 101, the PET detection units 101 are provided with numbers in advance, and each PET detection unit 101 is provided with a unique number;
a processor 102 connected to the PET detection unit 101 and the display 103, respectively; for completing the cross coincidence processing of any two PET detection units 101 according to the detection data of the plurality of PET detection units 101; the processor is further configured to acquire intersection coincidence data of the PET detection units 101 corresponding to two numbers according to the two numbers, and control the display 103 to display the intersection coincidence data.
Through the PET system, according to the numbers preset for the plurality of PET detection units in the PET system, the intersection coincidence data of the PET detection units corresponding to the two numbers can be obtained according to the two numbers, the intersection coincidence data of the PET detection units corresponding to the numbers are displayed on the man-machine interaction interface, and quality control and verification of the PET system are facilitated for users according to the intersection coincidence data of the PET detection units.
In some embodiments, the processor 102 may implement steps in the PET system cross-coincidence data processing method provided in the foregoing embodiments when executing the steps, which are not described herein.
In one embodiment, a computer device is provided, which may be a terminal. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method of PET system cross-coincidence data processing. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
In one embodiment, fig. 11 is a schematic diagram of an internal structure of a computer device according to an embodiment of the present application, as shown in fig. 11, and a computer device is provided, which may be a server, and an internal structure diagram thereof may be shown in fig. 11. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is for storing data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a PET system cross-coincidence data processing method.
It will be appreciated by those skilled in the art that the structure shown in fig. 11 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the computer device to which the present application applies, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps in the PET system cross-coincidence data processing method provided in the above embodiments when the computer program is executed by the processor.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon which when executed by a processor implements the steps in the PET system cross-coincidence data processing method provided by the various embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (7)
1. A method of PET system cross-coincidence data processing, the method comprising:
arranging a number in a PET system for each PET detection unit, wherein each PET detection unit corresponds to a unique number;
acquiring crossing coincidence data of PET detection units corresponding to two numbers according to the two numbers;
displaying the cross coincidence data on a human-computer interaction interface;
after the man-machine interaction interface displays the cross coincidence data, the method further comprises at least one of the following schemes:
scheme one: determining the working state of the PET detection unit according to the cross coincidence data;
scheme II: determining whether clocks of the PET detection units are synchronous according to the cross coincidence data;
scheme III: and determining the position information of the scanning object in the PET system according to the cross coincidence data.
2. The method of claim 1, wherein the storage and display mode of the cross-coincidence data is a chordal graph mode.
3. The method of claim 1, wherein determining whether clocks of PET detection units are synchronized based on the cross-coincidence data comprises:
acquiring a fast coincidence counting rate and a delayed coincidence counting rate of a PET system;
respectively displaying the fast coincidence counting rate and the delay coincidence counting rate of the PET detection units corresponding to the two numbers;
and determining whether clocks of the PET detection units are synchronous according to the display results of the fast coincidence counting rate and the delay coincidence counting rate.
4. The method of claim 1, wherein determining positional information of a scan object in a PET system based on the cross-coincidence data comprises:
determining a PET detection unit as a reference unit, taking the radial central line of the reference unit as a base line, and selecting PET detection units with symmetrical base line sides;
and determining the position information of the scanning object in the PET system according to the cross coincidence data of the symmetrical PET detection units.
5. A PET system cross-coincidence data processing apparatus, the apparatus comprising: an acquisition module and a display module;
the acquisition module is used for acquiring the crossing coincidence data of the PET detection units corresponding to two numbers according to the two numbers, wherein the numbers are preset for the PET detection units in the PET system, and each PET detection unit is provided with a unique number;
the display module is used for displaying the cross coincidence data on a human-computer interaction interface;
the display module is further configured to process at least one of the following schemes:
scheme one: determining the working state of the PET detection unit according to the cross coincidence data;
scheme II: determining whether clocks of the PET detection units are synchronous according to the cross coincidence data;
scheme III: and determining the position information of the scanning object in the PET system according to the cross coincidence data.
6. A PET system, the system comprising: a plurality of PET detection units, a gantry, a display, and a processor;
the plurality of PET detection units are arranged in the rack, the plurality of PET detection units are axially arranged, crossed coincidence data exist among the PET detection units, the PET detection units are provided with numbers in advance, and each PET detection unit is provided with a unique number;
the processor is respectively connected with the PET detection unit and the display; the method is used for completing the cross coincidence processing of any two PET detection units according to the detection data of the plurality of PET detection units; the processor is further used for acquiring the cross coincidence data of the PET detection units corresponding to the two numbers according to the two numbers in the numbers, and controlling the display to display the cross coincidence data;
the processor is further configured to process at least one of the following schemes:
scheme one: determining the working state of the PET detection unit according to the cross coincidence data;
scheme II: determining whether clocks of the PET detection units are synchronous according to the cross coincidence data;
scheme III: and determining the position information of the scanning object in the PET system according to the cross coincidence data.
7. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements a PET system cross-coincidence data processing method as claimed in any one of claims 1 to 4 when the computer program is executed by the processor.
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