Nuclear medicine department image examination virtual system and control method thereof

Abstract

The invention relates to the technical field of medical information, in particular to a nuclear medicine department image examination virtual system, which comprises a scene management module for managing loading and switching of each functional area scene of a nuclear medicine department; the interaction control module is connected with the scene management module and performs interaction input in each functional area scene through an augmented reality interaction component; the process management module is connected with the interaction control module and is used for controlling the sequence and logic of inspection steps; and the user interface display module is connected with the interaction control module and is used for providing a display interface and displaying a corresponding interface according to the interaction input. According to the method, a real nuclear medicine examination scene and interaction logic are constructed, an interaction function is realized based on an augmented reality interaction component, a user can naturally and smoothly complete various operations in a virtual environment, in addition, the sequence and logic of various examination steps are controlled according to a real nuclear medicine working process, and the user is guided to complete a complete examination process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical information technology, and in particular to a nuclear medicine image examination virtual system and a control method thereof. BACKGROUND

[0002] Nuclear medicine image examination technology (such as PET / CT) is a core means of precision medicine, and is widely used in the fields of tumor diagnosis, cardiovascular disease assessment, and neurodegenerative disease research. However, nuclear medicine examination involves the operation of radioactive isotopes, the use of complex equipment, and multi-link collaborative processes, which require high professional skills of medical personnel, and also have high dependence on the cooperation and cognitive level of patients.

[0003] The current training and education system in the field of nuclear medicine mainly relies on the following technical modes:

[0004] (1) Current status of patient education technology: Existing patient education mainly relies on oral explanation, paper manuals or short videos, and the information presentation form is single and cannot be empathized; and there is a lack of personalized adaptation, and existing education tools do not design differentiated content for different ages, cultural backgrounds or special needs (such as patients with claustrophobia), resulting in insufficient compliance of some patients. For example, a hospital statistics showed that only 35% of patients can fully understand the examination process (such as fasting requirements, imaging agent metabolism time) through traditional methods. In addition, the cognitive blind spot of patients on the closed examination cabin (such as PET / CT equipment) and radioactive drugs (imaging agent) is easy to cause anxiety (investigation shows that 60% of patients have moderate or above anxiety before examination), resulting in interruption of examination or increased repetition rate.

[0005] (2) Traditional theoretical teaching: mainly classroom teaching, supplemented by two-dimensional images or video demonstrations. For example, the operation steps of PET / CT equipment are shown through flowcharts or static pictures in medical textbooks, but there is a lack of intuitive presentation of three-dimensional spatial layout, dynamic operation logic and emergency scenarios. Studies have shown that under pure theoretical teaching, medical personnel need to spend an average of about 3 months to independently complete the operation of nuclear medicine examination, which is easy to cause operation errors.

[0006] (3) Limited practical operation training: due to the high risk of radioactive isotopes and the high cost of equipment (the purchase cost of a single PET / CT equipment exceeds 10 million yuan), it is generally difficult for medical institutions to provide sufficient practical operation opportunities. In addition, the requirement of radioactive protection limits the repeatability of operation.

[0007] (4) Local simulation tools: Some institutions use simple physical models (e.g. PET / CT device shell model) or two-dimensional software simulation tools (e.g. Virtual NucMed Trainer) for step-by-step training. Although such tools can simulate some operations (e.g. patient position adjustment), they have the following limitations: ① Insufficient interactivity: relying on keyboard / mouse input, unable to simulate spatial movement, handle control and multi-modal feedback in real operation; ② Incomplete process coverage: focusing only on device operation, ignoring patient communication, radiation safety protection and multi-role collaboration (e.g. physician and technician collaboration); ③ High hardware dependency: some systems require high-end GPU workstations, which have high deployment costs and poor portability. SUMMARY

[0008] In view of the above problems, the purpose of the present application is to provide a nuclear medicine department image examination virtual system.

[0009] The purpose of the present application is also to provide a control method for a nuclear medicine department image examination virtual system.

[0010] A nuclear medicine department image examination virtual system, comprising:

[0011] A scene management module for managing the loading and switching of scenes of various functional areas in the nuclear medicine department;

[0012] An interactive control module connected to the scene management module, for interactive input in the various functional area scenes through an extended reality interactive component;

[0013] A process management module connected to the interactive control module, for controlling the order and logic of examination steps;

[0014] A user interface display module connected to the interactive control module, for providing a display interface and displaying a corresponding interface according to the interactive input.

[0015] The nuclear medicine department image examination virtual system of the present application, wherein the various functional area scenes include a registration room or a ward, an injection room, a waiting room and an examination room (machine room); and the various functional area scenes are virtual scenes constructed through three-dimensional reconstruction and real-time rendering.

[0016] The nuclear medicine department image examination virtual system of the present application, wherein the interactive control module comprises,

[0017] A ray interactive component for realizing ray interaction within a predetermined trigger distance;

[0018] An input mapping component for realizing interactive input through handle operation;

[0019] A mobile control module is connected with the input mapping component and used for controlling the input mapping component.

[0020] The nuclear medicine image examination virtual system comprises at least seven sub-modules, including registration, examination shunting, blood glucose detection, medical history inquiry, contrast agent injection, waiting, examination and report.

[0021] The nuclear medicine image examination virtual system further comprises a platform adaptation and optimization module, which comprises,

[0022] The platform switching sub-module migrates the building platform of the Unity engine from the computer virtual reality platform to the Android environment platform.

[0023] The platform switching sub-module migrates the building platform of the Unity engine from the computer virtual reality platform to the Android environment platform.

[0024] The interactive logic reconstruction sub-module is connected with the platform switching sub-module, establishes a corresponding relationship with the input event by analyzing the handle key event, and triggers the interaction by analyzing the gaze event signal.

[0025] The rendering optimization sub-module is connected with the interactive logic reconstruction sub-module, and performs graphic rendering through a single rendering channel.

[0026] The memory management sub-module is connected with the rendering optimization sub-module, and performs scene asynchronous loading and resource preloading.

[0027] The system reconstruction sub-module is connected with the memory management sub-module, and migrates the user interface to the user interface involved in the virtual reality scene.

[0028] The nuclear medicine image examination virtual system comprises a main process state machine and a state controller, and the main process state machine is connected with the state controller and the interactive control module.

[0029] A control method of a nuclear medicine image examination virtual system is used for the nuclear medicine image examination virtual system, and comprises the following steps:

[0030] Step 1, after the system is started, load each functional area scene, initialize the scene management module, the interactive control module, the process management module and the user interface display module.

[0031] Step 2, the process management module virtualizes the inspection process according to steps;

[0032] Step 3, receiving ray interaction information and user interface interaction operation information of the user through the virtual reality head display and using the handle;

[0033] Step 4, recording user operation data, and analyzing the user operation data to evaluate subsequent training effect and function iteration.

[0034] The control method of the nuclear medicine department image examination virtual system, the step 1 comprises:

[0035] Step 11, loading scenes of various functional areas of the nuclear medicine department, wherein the various functional area scenes include a registration room or a ward, an injection room, a waiting room and an examination room (machine room);

[0036] Step 12, initializing the scene management module, the interactive control module, the process management module and the user interface display module;

[0037] Step 13, the user interface display module displays a selection interface of a doctor mode and a patient mode.

[0038] The control method of the nuclear medicine department image examination virtual system, the step 2 comprises,

[0039] Step 21, according to a real nuclear medicine work flow, inspection steps are constructed in segments, including registration, examination shunting, blood glucose detection, medical history inquiry, contrast agent injection, waiting, machine examination, report issuing and hospital leaving;

[0040] Step 22, three nuclear medicine image equipment and operation tool models are reconstructed in a virtual scene;

[0041] Step 23, clinical operation skill training content for medical staff and cognitive training of a nuclear medicine examination process for patients are displayed.

[0042] The control method of the nuclear medicine department image examination virtual system, the step 3 further comprises mobile virtual display platform adaptation and optimization, comprising,

[0043] The construction platform of the Unity engine is migrated from a computer virtual reality platform to an Android environment platform, and a mobile terminal SDK is integrated;

[0044] Single rendering channel is adopted for graphic rendering;

[0045] Scene asynchronous loading and resource preloading are performed.

[0046] Beneficial effects: the nuclear medicine image examination virtual system of the application, by constructing a real nuclear medicine examination scene and interaction logic, realizes interaction function based on an extended reality interaction component, ensures that the user can complete each operation naturally and smoothly in the virtual environment, and in addition, controls the examination step sequence and logic according to the real nuclear medicine workflow, guides the user to complete the complete examination process. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 is an architecture schematic diagram of a nuclear medicine image examination virtual system of the application;

[0048] Figure 2 is a system structure schematic diagram of the application;

[0049] Figure 3 is a PET / CT examination flowchart of the process management module 13 of the application;

[0050] Figure 4 is a principle block diagram of the process management module 13 of the application;

[0051] Figure 5 is a principle block diagram of the platform adaptation and optimization module 15 of the application;

[0052] Figure 6 is a flowchart of a control method of a nuclear medicine image examination virtual system of the application;

[0053] Figure 7 is a control algorithm flowchart of the application. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0055] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0056] The application will be further described below with reference to the drawings and specific embodiments, but is not limited to the application.

[0057] Although virtual reality (VR) and augmented reality (AR) technologies have made progress in surgical simulation (e.g. Surgical Theater), anatomy teaching (e.g. 3D Organon VR Anatomy), etc., there is still a gap in addressing the special needs of nuclear medicine: insufficient scene adaptation: existing systems focus on surgery and lack simulation of complex nuclear medicine procedures; lack of multi-role collaboration: there is no design for physician, technician, and nurse collaboration scenarios, making it difficult to reflect the real working environment; lack of patient modules: existing tools do not provide immersive experiences for patients, and cannot reduce their anxiety through virtual rehearsals.

[0058] Referring to Figure 1 、 Figure 2 A virtual system for nuclear medicine image examination, comprising:

[0059] a scene management module 11 for managing the loading and switching of scenes in various functional areas of the nuclear medicine department;

[0060] an interactive control module 12 connected to the scene management module 11 for interactive input in the various functional area scenes through an extended reality interaction component;

[0061] a process management module 13 connected to the interactive control module 12 for controlling the order and logic of examination steps;

[0062] a user interface (UI) display module 14 connected to the interactive control module 12 for providing a display interface and displaying corresponding interfaces according to the interactive input.

[0063] The purchase and maintenance costs of nuclear medicine imaging equipment (such as PET / CT) far exceed those of ordinary medical equipment, making it difficult for small and medium-sized hospitals to afford them; strict adherence to protection standards is required for the operation of radioactive isotopes, and mistakes by inexperienced operators can lead to radiation exposure accidents, limiting the frequency of training; only 30% of nuclear medicine departments in China are equipped with dedicated training equipment. Traditional education methods cannot help patients understand complex procedures intuitively, resulting in low cooperation; paper manuals or short videos lack interactivity, and patients cannot deepen their understanding through active operation; there is no differentiation in content for different ages, cultural backgrounds, or special needs (such as claustrophobia); the closed examination environment and the unfamiliarity of radioactive imaging agents exacerbate the psychological burden on patients and make it difficult for them to cooperate throughout the process.

[0064] The present application constructs a real nuclear medicine examination scene and interaction logic, realizes interaction functions based on an extended reality interaction component, ensures that the user can naturally and smoothly complete various operations in the virtual environment, and in addition, controls the examination step sequence and logic according to the real nuclear medicine workflow, guides the user to complete the complete examination process; solves the problems of high training equipment cost, poor user experience, limited training effect and the like in traditional nuclear medicine training, and provides a low-cost, portable, intuitive and efficient nuclear medicine examination process virtual training platform for medical personnel and patients.

[0065] The nuclear medicine department image examination virtual system provided by the present application, each functional area scene includes a registration room or a ward, an injection room, a waiting room, an examination room and the like; each functional area scene is a nuclear medicine examination virtual scene constructed by three-dimensional reconstruction and real-time rendering technology according to a real nuclear medicine department workflow.

[0066] Referring to Figure 2 The nuclear medicine department image examination virtual system provided by the present application, the interaction control module 12 includes,

[0067] A ray interaction component 121, the ray interaction component 121 realizes ray interaction within a predetermined trigger distance;

[0068] An input mapping component 122, the input mapping component 122 realizes interactive input through operation of a handle;

[0069] A movement control module 123 connected with the input mapping component 122, used for controlling the input mapping component.

[0070] The traditional PC terminal system relies on keyboard / mouse input, which does not match the real operation scene (such as handle control, space movement); the ray interaction component 121 of the present application realizes long-distance ray interaction based on the XR Interaction Toolkit interaction component, the trigger distance can be set to 3 meters, the input mapping component 122 realizes the interactive function of handle input mapping, the A key on the handle is used for confirming operation, the trigger key is used for ray interaction, the left handle rocker is used for continuous movement, the reference speed is 2m / s, and the character movement control component is used to prevent penetration, and the character movement control component can adopt the CharacterController component in Unity. The interaction control module 12 of the present application can ensure that the user can naturally and smoothly complete various operations in the virtual environment.

[0071] Referring to Figure 3 , Figure 4The nuclear medicine department image examination virtual system provided by the application, the process management module 13 comprises at least seven sub-modules; the sub-modules are sequentially connected and comprise a registration sub-module 131, an examination shunting sub-module 132, a blood glucose detection sub-module 133, a medical history inquiry sub-module 134, an imaging agent injection sub-module 135, a waiting sub-module 136, an on-machine examination sub-module 137, a report providing sub-module 138 and a hospital leaving sub-module 139.

[0072] The user interface display module 14 provides operation prompts, examination information and teaching content, the teaching content comprises clinical operation skill training content for medical personnel, and also comprises cognitive training of a nuclear medicine examination process for a patient.

[0073] The existing tools only simulate a single link (such as on-machine scanning), and ignore the whole process management (such as patient registration, imaging agent configuration, drug injection, examination preparation, on-machine examination, emergency treatment and the like). According to the real nuclear medicine work flow, the application controls the sequence and logic of examination steps, guides the user to complete the complete examination process, and comprises patient registration, examination shunting, fasting blood glucose detection, medical history inquiry, imaging agent injection, waiting, on-machine examination and report providing. By designing modularized training content, designing different interfaces for medical personnel and patients, the clinical operation skill training for medical personnel is also covered, and the cognitive training of the nuclear medicine examination process for the patient is also covered, so that both types of users can fully master the operation points; the PET / CT examination process virtualization is realized.

[0074] The interactive interface and operation process of the user interface display module 14 of the application are simple and easy to use, an extended reality user interface system is adopted, and it is ensured that the interface elements are easy to operate in the virtual environment.

[0075] Reference Figure 5 The nuclear medicine department image examination virtual system provided by the application further comprises a platform adaptation and optimization module 15, which comprises,

[0076] The platform switching sub-module 151 migrates the construction platform of the Unity engine from the computer virtual reality platform to the Android environment platform;

[0077] The interactive logic reconstruction sub-module 152 is connected with the platform switching sub-module 151, establishes a corresponding relationship with the input event by analyzing the handle key event, and triggers the interaction by analyzing the gaze event signal;

[0078] The rendering optimization sub-module 153 is connected with the interactive logic reconstruction sub-module 152 and performs graphic rendering through a single rendering channel;

[0079] The memory management sub-module 154 is connected with the rendering optimization sub-module 153 and performs scene asynchronous loading and resource preloading;

[0080] The system reconstruction submodule 155 is connected with the memory management submodule 154, and migrates the user interface to the user interface involved in the virtual reality scene.

[0081] The platform switching submodule 151 of the application inherits the Android SDK and related dependent libraries, the interaction logic reconstruction submodule 152 rebinds the handle key event and adapts the gaze interaction logic, the rendering optimization submodule 153 adopts the single-pass rendering technology, reduces the number of draw call rendering instructions, and simplifies the post-processing effect.

[0082] The memory management submodule 154 realizes scene asynchronous loading and resource preloading, and reduces the system startup and scene switching delay.

[0083] The system reconstruction submodule 155 migrates the user interface from the traditional Unity to the extended reality user interface specially designed for the virtual reality scene.

[0084] The application utilizes the lightweight and low-power hardware, performs rendering optimization and memory management, simultaneously considers high performance and low power consumption, and further improves the user experience.

[0085] A working method of a nuclear medicine department image examination virtual system, for the nuclear medicine department image examination virtual system, comprising:

[0086] Step 1, after the system is started, load the scenes of various functional areas, initialize the scene management module, the interaction control module, the process management module and the user interface display module;

[0087] Step 2, the process management module virtualizes the examination process according to steps;

[0088] Step 3, receive the ray interaction information and the user interface interaction operation information of the user through the virtual reality head display and the handle;

[0089] Step 4, record the user operation data, analyze the user operation data to evaluate the subsequent training effect and function iteration.

[0090] The prior art has the problems of poor interactive experience, incomplete process coverage, lack of quantitative indexes (such as operation time and error rate) for dynamic tracking and intelligent analysis of training effect, and no targeted solution to the pain points of nuclear medicine, and the like. In order to solve the problems that the prior art cannot quickly respond to changes in clinical requirements, the present application first initializes the system architecture, and then selects the examination process. In the interaction and operation, the user wears a VR headset and uses a handle to complete the ray interaction and user interface operation. The interface uses an XR UI system, which is suspended or attached to real objects in the virtual scene, allowing the user to naturally read text or icons and perform each step smoothly in the simulated nuclear medicine environment. The system records user operation data in real time during operation for subsequent training effect evaluation and function iteration. Through data analysis and feedback, the process management and rendering performance are continuously optimized to achieve continuous improvement of training content and operation experience, and a safe, immersive and intuitive virtual training environment is provided for medical personnel and patients.

[0091] The present application simulates the real examination process of the nuclear medicine department through virtual reality technology, and constructs a set of training system suitable for both clinical skill training of medical personnel and process cognition and training of patients, while reducing the hardware investment and system deployment cost, and providing an innovative solution for the training of the nuclear medicine department.

[0092] The working method of the nuclear medicine department image examination virtual system provided by the present application comprises the following steps:

[0093] Step 11, loading the scene of each functional area of the nuclear medicine department, wherein the scene of each functional area comprises a registration room or a ward, an injection room, a waiting room and an examination room;

[0094] Step 12, initializing the scene management module, the interactive control module, the process management module and the user interface display module;

[0095] Step 13, the user interface display module displays a selection interface of a doctor mode and a patient mode.

[0096] After the system is started, the core scene (including a waiting room, an examination room, an injection room and the like) and necessary resources are automatically loaded, and each module is initialized, including scene management, interactive control, process management and user interface display. In the initial scene, the system presents a main interface for the user to select a doctor mode or a patient mode.

[0097] The working method of the nuclear medicine department image examination virtual system provided by the present application comprises the following steps:

[0098] Step 21, according to the real nuclear medicine workflow, the examination steps are segmented and constructed, including registration, examination diversion, blood glucose detection, medical history inquiry, contrast agent injection, waiting, examination, report issuance and hospital leaving;

[0099] Step 22, three-dimensionally reconstructing a nuclear medicine imaging device and an operation tool model in the virtual scene;

[0100] Step 23, displaying clinical operation skill training content for medical staff and cognitive training of a nuclear medicine examination process for patients.

[0101] In the process management, the examination steps are segmented according to the actual nuclear medicine work flow, such as steps of "registration-blood glucose measurement-historical inquiry-imaging agent injection-waiting-examination-exit hospital". Each step is equipped with operation prompts and teaching information, such as matters needing attention during fasting blood glucose measurement, safety specifications for imaging agent injection, etc. The process management module monitors the current progress of the user, and triggers an alarm or auxiliary instruction when necessary.

[0102] The working method of the nuclear medicine image examination virtual system, the step 3 further comprises mobile virtual display platform adaptation and optimization, including,

[0103] The construction platform of the Unity engine is migrated from a computer virtual reality platform to an Android environment platform, and a mobile terminal SDK is integrated.

[0104] Single rendering channel is adopted for graphic rendering.

[0105] Scene asynchronous loading and resource preloading are performed.

[0106] The present application effectively reduces the overall cost and maintenance and update cost of the system by using lightweight and low-power hardware devices. After the system is transplanted to the mobile VR platform, the cost of a single device is reduced to 2000-4000 yuan RMB, which greatly reduces the hardware investment compared with the traditional computer VR system, so that the system has more extensive application conditions. The present application also effectively improves the user experience and system stability. The optimized intuitive user interface and perfect interactive process greatly improve the operation experience, ensuring that medical staff and patients can quickly get started during use. Multi-modal feedback and stable real-time rendering technology ensure the high reliability and stability of the system in long-time operation and complex scenes. In addition, the present application enables students to intuitively understand the complete process of nuclear medicine examination through the immersive VR environment, and the modular training content makes the training process uniform, which not only meets the training requirements of medical staff for clinical skills, but also helps patients understand the examination process, thereby reducing the risk and anxiety of examination.

[0107] Figure 7The state machine-based control method flow chart of one specific embodiment of the present application realizes control through modular design and state conversion logic, first carries out PET-CT examination flow control, after the initialization stage, carries out the main flow state machine, the state controller and the interactive trigger system respectively carry out information interaction with the main flow state machine, the main flow state machine respectively enters the state flow chart and the examination flow entrance after that;

[0108] The state flow chart carries out state conversion logic after that, acquires the current state, detects the state completion condition, and carries out state conversion trigger after the state is completed, then respectively closes the current state element, activates the next state element, and finally completes state update.

[0109] The state controller enters the entrance condition after that, activates the element, completes the condition, and exits the action, the examination flow entrance is connected with the entrance condition, the activated element, the completion condition and the exit action through the state detailed structure respectively.

[0110] Through the description and the drawings, the typical embodiments of the specific structure of the specific embodiment are given, and other conversions can be made based on the spirit of the present application. Although the above-mentioned application proposes the existing preferred embodiment, however, these contents are not as limitations.

[0111] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications within the true intent and scope of the present application. Any and all equivalent ranges and contents within the scope of the claims should be considered as still within the intent and scope of the present application.

Claims

1. A virtual system for nuclear medicine department image examination, characterized in that, Comprise: Scene management module, management of nuclear medicine department each functional area scene loading and switching; Interactive control module, connected with the scene management module, through the extended reality interaction components in the each functional area scene interaction input; Process management module, connected with the interactive control module, control inspection step sequence and logic; User interface display module, connected with the interactive control module, provide display interface and according to the interaction input display corresponding interface.

2. The virtual nuclear medicine section imaging examination system of claim 1, wherein, The each functional area scene includes registration room or ward, injection room, waiting room, examination room;The each functional area scene is through three-dimensional reconstruction and real-time rendering to build nuclear medicine examination virtual scene.

3. The virtual nuclear medicine section imaging examination system of claim 1, wherein, The interactive control module includes, Ray interaction component, the ray interaction component realizes the ray interaction within the predetermined trigger distance; Input mapping component, the input mapping component realizes interactive input through the operation of handle; Mobile control module, connected with the input mapping component, for controlling the input mapping component.

4. The virtual nuclear medicine section imaging examination system of claim 1, wherein, The process management module includes at least seven submodules;Including sequentially connected registration submodule, examination shunt submodule, blood glucose detection submodule, medical history inquiry submodule, developer injection submodule, waiting room submodule, machine examination submodule, report submodule, leave hospital submodule;The user interface display module provides operation prompt, examination information and teaching content, the teaching content includes clinical operation skill training content for medical staff, also includes the cognitive training of nuclear medicine examination process to patients.

5. The virtual nuclear medicine section imaging examination system of claim 3, wherein, Also include platform adaptation and optimization module, including, Platform switching submodule, the construction platform of Unity engine is migrated from computer virtual reality platform to Android environment platform; Interaction logic reconstruction submodule, connected with the platform switching submodule, through the analysis handle button event, establish the corresponding relationship with input event, and through the analysis gaze event signal trigger interaction; Rendering optimization submodule, connected with the interaction logic reconstruction submodule, through single rendering channel for graphics rendering; Memory management submodule, connected with the rendering optimization submodule, scene asynchronous loading and resource preloading are carried out; System reconstruction submodule, connected with the memory management submodule, the user interface is migrated to the user interface involved in virtual reality scene.

6. The virtual nuclear medicine section imaging system of claim 1, wherein, The process management module includes main process state machine and state controller, the main process state machine is connected with the state controller and the interactive control module.

7. A control method of a nuclear medicine department image examination virtual system, characterized by, The nuclear medicine department image examination virtual system for any one of claims 1 to 6, comprising: Step 1, after system startup, load each functional area scene, initialize the scene management module, interactive control module, process management module, user interface display module; Step 2, the process management module according to step virtualization examination process; Step 3, receive the ray interaction information and user interface interactive operation information that user uses through virtual reality head display and uses handle; Step 4, record user operation data, analyze the user operation data to evaluate the subsequent training effect and function iteration.

8. The control method of the nuclear medicine virtual system for image examination according to claim 7, characterized in that, The step 1 includes: Step 11, load the nuclear medicine department of each functional area scene; the various functional area scene includes registration room or ward, injection room, waiting room, examination room; Step 12, initialize the scene management module, interactive control module, process management module, user interface display module; Step 13, the user interface display module displays the selection interface of the doctor mode and the patient mode.

9. The control method of the nuclear medicine virtual system for image examination according to claim 7, characterized in that, The step 2 includes, Step 21, according to the real nuclear medicine workflow, segment construction examination step, including registration, examination shunt, blood glucose detection, medical history inquiry, contrast agent injection, waiting, machine examination, report, leave the hospital; Step 22, three nuclear medicine image equipment and operation tool models are reconstructed in the virtual scene; Step 23, display the clinical operation skill training content for medical staff and the cognitive training of nuclear medicine examination process for patients.

10. The control method of the nuclear medicine virtual system for image examination according to claim 7, wherein, The step 3 further includes mobile virtual display platform adaptation and optimization, including, Migrate the construction platform of Unity engine from computer virtual reality platform to Android environment platform, integrate mobile terminal SDK; Adopt single rendering channel for graphics rendering; Carry out scene asynchronous loading and resource preloading.

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