PET imaging system based on rotation of double detectors

Abstract

The utility model relates to the technical field of PET imaging, in particular to a PET imaging system based on rotation of double detectors, which comprises a rotating table, two detector modules arranged on two sides of the rotating table, a motor in driving connection with the rotating table and used for driving the rotating table to rotate, and a controller electrically connected with the motor and used for controlling the rotating table to rotate. The controller controls the rotating table to rotate through the motor, so that the two detector modules can comprehensively collect data of all angles during scanning; by adopting the combined design of the double detector modules and the rotating table, efficient data acquisition in the PET imaging process is realized, the rotating table can stably rotate under the driving of the motor, and the two detector modules can comprehensively acquire data of all angles during scanning. Due to the combined design of the double-detector module and the rotating table, the hardware cost is reduced, the complexity of a signal processing circuit is simplified, and the system cost and the maintenance difficulty are further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to PET imaging technical field, concretely relates to a PET imaging system based on double detector rotation. BACKGROUND

[0002] Positron emission tomography (PET) as a kind of key molecular imaging technology, plays a pivotal role in medical diagnosis and research field.It is widely used in early diagnosis and staging of tumor, functional assessment of cardiovascular disease, accurate diagnosis of nervous system disease and molecular tracking in the process of new drug development etc.Linkage.However, the design of traditional PET system limits its more extensive application to some extent.

[0003] Traditional PET system mostly adopts full-ring detector design, and the detector is arranged in the form of ring or polygon.This design can realize relatively comprehensive data acquisition, but there are many deficiencies.Firstly, the use of a large number of detector modules leads to high system cost, and the complexity of signal processing circuit further increases the cost burden.Secondly, the maintenance and replacement cost of the system is also high, which brings not small economic pressure to medical institutions.In addition, the consistency of the detector is difficult to guarantee, the system dead time is long, and the sampling unevenness caused by the gap between the detectors affects the quality and accuracy of PET imaging.

[0004] Although existing systems try to adopt single-ring imaging mode to try to reduce system cost and complexity, but still cannot completely get rid of the shackles of traditional PET system design method.These systems, although the number of detectors is relatively small, still need multiple detector modules, and the cost is still relatively high.

[0005] In summary, the traditional PET system adopts the design of one or more detector modules to form a ring structure, which has the problems of high system cost, high complexity, high consistency requirement of detector and difficulty in system integration.These problems not only limit the popularization and application of PET equipment, but also bring many inconveniences to medical institutions and researchers.Therefore, a new type of PET imaging system is urgently needed to solve these problems existing in traditional system. UTILITY MODEL CONTENT

[0006] In view of the defects of prior art, the utility model provides a PET imaging system based on double detector rotation, to solve the problems of multiple detector modules, high system complexity and high cost in prior art.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A kind of PET imaging system based on double detector rotation, including: rotating table, two sides of rotating table are provided with two detector modules, with motor driving connection for driving rotating table rotation with rotating table, with controller electric connection for controlling rotating table rotation with motor, when measurement, controller controls rotating table rotation by motor, to enable two detector modules to be able to fully collect data of all angles during scanning.

[0009] Further, rotating table is coaxially connected with motor output shaft, and the controller controls the angle, speed and time of rotating table rotation by motor.

[0010] Further, two detector modules are oppositely arranged, and the angle between the detector modules is 180 degrees.

[0011] Further, the controller includes a single-chip microcomputer and a computer, and the motor is electrically connected with the single-chip microcomputer, and the single-chip microcomputer is electrically connected with the computer.

[0012] The PET imaging system based on double detector rotation has the beneficial effects that: by adopting the combined design of the double detector modules and the rotating table, efficient data acquisition in the PET imaging process is realized, the rotating table can stably rotate under the driving of the motor, the two detector modules can fully collect data of all angles during scanning, the combined design of the double detector modules and the rotating table not only reduces the hardware cost, but also simplifies the complexity of the signal processing circuit, further reduces the system cost and maintenance difficulty, and due to the reduction in the number of detector modules, the integration difficulty of the system is also reduced, so that the system is easier to install and debug. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic view of the three-dimensional structure of the embodiment of the utility model;

[0014] Figure 2 is a structural schematic view of the embodiment of the utility model;

[0015] Figure 3 is a multi-angle rotating sampling rotating 60-degree schematic view of the embodiment of the utility model;

[0016] Figure 4 is a multi-angle rotating sampling rotating 40-degree schematic view of the embodiment of the utility model.

[0017] Reference signs: 1, motor; 2, rotating table; 3, detector module. DETAILED DESCRIPTION

[0018] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0019] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] To further illustrate the principle and structure of this utility model, the preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-4 As shown, this utility model embodiment provides a PET imaging system based on dual detector rotation, including: a rotating stage 2, detector modules 3, a motor 1, and a controller. The rotating stage 2 is used to support the detector modules 3. The rotating stage 2 can be a cylindrical structure that can rotate around its own axis. The detector modules 3 are installed on both sides of the rotating stage 2. The motor 1 is driven by the rotating stage 2 and is used to provide power for the rotation of the rotating stage 2. The controller is electrically connected to the motor 1 and controls the rotation of the rotating stage 2 through the motor 1. During measurement, the rotation of the rotating stage 2 enables the two detector modules 3 to fully acquire data from all angles during scanning.

[0022] Specifically, this system uses two detector modules 3 arranged opposite to each other, which are installed on both sides of the rotating stage 2, with an angle of 180 degrees between them.

[0023] Furthermore, the aforementioned rotary stage 2 is coaxially connected to the output shaft of motor 1. During PET imaging, it is necessary to ensure that the detector module 3 can accurately align with and scan the target area. When the rotary stage 2 is coaxially connected to the output shaft of motor 1, the vibration and sway caused by different axes can be minimized, thereby improving the stability and accuracy of rotation, and thus improving the clarity and accuracy of imaging.

[0024] Furthermore, the aforementioned controller can control the rotation angle, speed, and time of the rotary table 2. The controller consists of two parts: a microcontroller and a computer. The microcontroller is electrically connected to the motor 1 and is responsible for receiving instructions from the computer and controlling the rotation of the motor 1. The computer serves as the user interface, used to set the rotation sampling strategy, monitor the rotation status, and process the collected data.

[0025] This system provides a variety of rotation sampling strategies to adapt to different scanning requirements:

[0026] 1. Continuous Rotation Sampling: In this mode, the rotary table 2 rotates at a fixed angular velocity, and the two detector modules 3 continuously collect data during the rotation. This strategy is suitable for scenarios requiring comprehensive and continuous data acquisition.

[0027] 2. Adaptive Rotation Sampling: The rotation speed of the rotary stage 2 is automatically adjusted according to the scan time. For example, in the early stages of scanning, the rotation speed can be increased to cover more angles as quickly as possible; as the scan progresses, the rotation speed is gradually reduced to ensure that data from each angle is fully acquired. This strategy optimizes the scan time while ensuring the integrity of data acquisition.

[0028] 3. Multi-angle combined sampling: Multiple rotation angles are preset, such as 60 degrees, 45 degrees, etc. The rotating stage 2 rotates and stops according to the preset angles, so that the detector module 3 can collect data from specific angles more accurately. This strategy is suitable for scenarios with higher data acquisition requirements for specific areas or angles.

[0029] The following are the specific implementation steps of a PET imaging system based on dual-detector rotation:

[0030] 1. System initialization: Start the computer and load the PET imaging software; after receiving the start command from the computer, the microcontroller initializes the state of motor 1 and rotary table 2.

[0031] 2. Set rotation sampling strategy: According to the scanning requirements, set an appropriate rotation sampling strategy on the computer (such as continuous rotation sampling, adaptive rotation sampling, or multi-angle combination sampling).

[0032] 3. Start Scanning: The computer sends a rotation command to the microcontroller, which controls motor 1 to start the rotary table 2. The two detector modules 3 begin collecting data during the rotation.

[0033] 4. Data Acquisition and Processing: Detector module 3 transmits the acquired data to the computer for processing. The computer generates PET images according to a preset algorithm.

[0034] 5. Monitoring and Adjustment: During the scanning process, the computer monitors the status of the rotary table 2 and the data acquisition in real time. Adjustments to the rotation sampling strategy or termination of the scan can be made via the computer.

[0035] 6. End Scan: After all preset angle data has been collected and processed, the computer sends a stop command to the microcontroller, which then controls motor 1 to stop the rotary table 2. The scan is complete.

[0036] This invention also provides a PET imaging method based on dual-detector rotation, comprising the following steps:

[0037] S01: Start the computer, load the PET imaging software, and after the microcontroller receives the start command from the computer, initialize the state of motor 1 and rotary table 2.

[0038] S02: Based on the scanning requirements, set an appropriate rotation sampling strategy on the computer. The rotation sampling measurement can be selected from the continuous rotation sampling, adaptive rotation sampling, and multi-angle combination sampling mentioned above.

[0039] S03: The computer sends a rotation command to the microcontroller, which controls motor 1 to start the rotary table 2, and the two detector modules 3 begin to collect data during the rotation.

[0040] S04: Detector module 3 transmits the acquired data to the computer for processing, and the computer generates PET images according to a preset algorithm.

[0041] This system achieves efficient data acquisition during PET imaging by combining a dual detector module 3 with a rotating stage 2. Driven by motor 1, the rotating stage 2 rotates smoothly, ensuring that both detector modules 3 can comprehensively acquire data from all angles during scanning. This combination of dual detector modules 3 and rotating stage 2 not only reduces hardware costs but also simplifies the complexity of signal processing circuitry, further lowering system costs and maintenance difficulty. The reduced number of detector modules 3 also lowers the system integration difficulty, making the system easier to install and debug.

[0042] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A PET imaging system based on dual-detector rotation, characterized in that, include: The rotary table has two detector modules on each side. A motor connected to the rotary table drive is used to drive the rotary table to rotate. A controller connected to the motor is used to control the rotation of the rotary table. During measurement, the controller controls the rotation of the rotary table through the motor so that the two detector modules can fully collect data from all angles during the scanning process.

2. The PET imaging system based on dual-detector rotation according to claim 1, characterized in that, The rotary table is coaxially connected to the motor output shaft, and the controller controls the rotation angle, speed and time of the rotary table through the motor.

3. The PET imaging system based on dual-detector rotation according to claim 2, characterized in that, The two detector modules are positioned opposite each other, with an angle of 180 degrees between them.

4. The PET imaging system based on dual detector rotation according to claim 3, characterized in that, The controller includes a microcontroller and a computer. The motor is electrically connected to the microcontroller, and the microcontroller is electrically connected to the computer.

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