CN111816283B - Compact medical image intelligent storage service system - Google Patents
Compact medical image intelligent storage service system Download PDFInfo
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- CN111816283B CN111816283B CN202010710705.8A CN202010710705A CN111816283B CN 111816283 B CN111816283 B CN 111816283B CN 202010710705 A CN202010710705 A CN 202010710705A CN 111816283 B CN111816283 B CN 111816283B
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H30/00—ICT specially adapted for the handling or processing of medical images
- G16H30/20—ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/13—File access structures, e.g. distributed indices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/18—File system types
- G06F16/182—Distributed file systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
- G06F16/51—Indexing; Data structures therefor; Storage structures
Abstract
The invention provides a compact medical image intelligent storage service system.A peripheral interface layer comprises a DICOM service unit connected with image equipment of a hospital, an HL7 service unit connected with a hospital information system and a radiation information management system of the hospital and a human-computer interaction unit used for operation of an administrator; the data storage layer comprises a medical image storage library and a business data storage library; the service logic layer comprises an image file access unit, a service logic processing unit and a service data access unit, the image file access unit performs data interaction with the medical image repository and controls medical image storage planning according to the characteristics of the medical images; the service logic processing unit triggers an intelligent image processing rule to perform service processing according to a preset service rule; the service data access unit and the service data storage bank carry out data interaction with the service logic processing unit; the development trend of future medical imaging systems is held, and therefore a low-cost and high-efficiency storage service system is provided.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to a compact medical image intelligent storage service system.
Background
In recent years, data processing and big data technologies are increasingly applied to the field of medical health, and have important significance in aspects such as disease diagnosis, clinical decision support, medical research, medical institution management and the like; at present, middle and high-end medical imaging equipment of a hospital is monopolized by a large-brand manufacturer of a multinational company for many years, the sale price is high, and the matching system and the service cost are quite high.
The need for hospital upgrades to PACS mainly comes from the capacity bottleneck of image storage. Typically, after about 3 years, the storage capacity of the Mini-PACS system design often becomes the bottleneck of the entire system. Meanwhile, with the rapid development of CT/MR devices, the diagnostic image volume generated by each diagnosis is larger and larger, and the volume design time of the PACS system is further shortened, and the system is updated more frequently.
In order to solve the above problems, a compact medical image intelligent storage service system with cost saving, high efficiency and mass storage is needed.
Disclosure of Invention
The invention aims to provide a compact medical image intelligent storage service system to solve the problems that the existing hospital image equipment is expensive and needs frequent storage capacity updating due to the cold end of a large factory.
The invention provides the following technical scheme:
a compact medical image intelligent storage service system comprises an external interface layer, a service logic layer and a data storage layer, wherein the external interface layer comprises a DICOM service unit connected with image equipment of a hospital, an HL7 service unit connected with a hospital information system and a radiation information management system of the hospital and a human-computer interaction unit used for operation of an administrator; the data storage layer comprises a medical image storage library and a business data storage library; the service logic layer comprises an image file access unit, a service logic processing unit and a service data access unit, wherein the image file access unit performs data interaction with the medical image repository and controls medical image storage planning according to the characteristics of the medical images; the service logic processing unit triggers an intelligent image processing rule to perform service processing according to a preset service rule; and the service data access unit and the service data storage bank perform data interaction with the service logic processing unit.
Preferably, the DICOM service unit is connected with the image equipment through a DICOM3.0 standard interface; the HL7 service unit is connected with a hospital information system and a radiation information management system of a hospital through an HL7 standard interface; the man-machine interaction unit provides a friendly management interface based on a WEB environment for an administrator.
Preferably, the characteristics of the medical image include storage, communication and display of large-capacity digital information; the medical image storage planning control method comprises the steps of adopting a distributed system infrastructure, fully utilizing the high-speed operation and storage performance of a cluster and supporting cloud storage expansion.
Preferably, the preset service rules include Find, Move, and Store request and response mechanisms, and the triggering intelligent image processing rules include pre-configuration routing rules, sending or receiving medical images, performing lossless compression on the medical images, and performing distributed storage.
Preferably, the system adopts a standard ethernet networking mode, and comprises a three-layer switch, wherein the three-layer switch completes end-to-end data exchange according to an IP address of a third layer network layer, so that not only can a port exchange function of a second layer switch be completed, but also a part of routing functions of routers can be completed, multi-layer dynamic integration can be supported, and the transmission performance of mass data in a local area network can be improved.
The invention has the beneficial effects that:
the invention relates to a compact medical image intelligent storage service system, which conforms to the development trend of future medical image systems, namely the division of the future image systems is more and more careful, and equipment manufacturers, diagnostic system manufacturers and storage manufacturers develop towards high specialization respectively.
1) The reasonable utilization of the DICOM3.0 standard and the HL7 standard provides a low-cost and high-efficiency solution for storing the images; DICOM3 and HL7 have become common in the industry, and these standards provide the basis for interworking systems. The system aims at an independent storage function, avoids competition with foreign large-scale enterprises on an image reading scheme, provides a complementary function and provides a system combination with optimal cost performance for hospitals.
2) Based on deep understanding of domestic markets and earnest research on foreign products, the possibility of system fusion is found, and the requirements of customers on application are met and higher; the medical imaging department system has the advantages that the working habits of doctors in China and abroad are well known, the diagnosis accuracy, the scientificity and the timeliness of the doctors are effectively improved through the intelligent storage system, the working efficiency of the imaging department of hospitals is improved, an intelligent bridge is built among several existing specific systems of the hospitals, and the further development of medical informatization is promoted.
3) Creatively provides an image archiving distributed storage scheme and a seamless integration scheme, and ensures that the requirements of large-scale customers are met. The mature internet distributed cloud storage technology is applied to the medical industry, the storage cost can be greatly reduced, and massive data storage is supported. The distributed storage technology based on the internet also supports the rapid backup of the stored data, and effectively ensures the safety of the data. Meanwhile, the application of cloud storage can guarantee the smooth evolution of medical images to regional medical treatment in the future, and the repeated investment of hospitals is also avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the system framework of the present invention.
Detailed Description
As shown in fig. 1, a compact medical image intelligent storage service system includes an external interface layer, a business logic layer and a data storage layer.
1. The external interface layer comprises a DICOM service unit connected with image equipment of a hospital, an HL7 service unit connected with a hospital information system and a radiation information management system of the hospital and a man-machine interaction unit used for operation of an administrator; the DICOM service unit is connected with the image equipment through a DICOM3.0 standard interface; the HL7 service unit is connected with a hospital information system and a radiation information management system of a hospital through an HL7 standard interface; the man-machine interaction unit provides a friendly management interface based on a WEB environment for an administrator.
And the HL7 service unit provides an HL7 interface to external equipment, and is used for merging the actual requirements of patient information, modifying the actual requirements of the patient information, pre-pushing a certain patient medical image and the like. The HL7 messages processed were: ADT _ a08 message: the message is used for updating certain user information, the message can transmit a PatientID and part of the fields of the Paient needing to be updated, and the Paient information is modified according to the ID. Since only the database is modified, when the image is sent out, the modified parent information needs to be updated into the DICOM file and then sent out. ADT _ a40 message: and merging the parent information. Because EMR (electronic medical record uploaded by Portal) information, studio information, and ORU (diagnosis report received by HL 7) information in the system are all directly hooked with the Patient information, when merging, the information of the 3 tables needs to be modified synchronously, and when pushing images outwards, the Patient information in the new images needs to be updated to be merged Patient information and then pushed out. ORU _ R01 message: diagnostic report information is received. ORM _ O01 message: the message is used to initiate the transmission of an instruction, which may include replacing, terminating an existing instruction, or interrupting, maintaining an existing state, etc. The system is used for pre-pushing historical images of a certain patient to a third party.
The human-computer interaction unit Portal is used as a WEB management interface, is a main operation interface of a user and mainly provides functions of inquiry, acquisition, downloading, online preview and the like.
2. The data storage layer comprises a medical image storage library and a business data storage library; the characteristics of the medical image comprise storage, communication and display of large-capacity digital information; the medical image storage planning control method comprises the steps of adopting a distributed system infrastructure, fully utilizing the high-speed operation and storage performance of a cluster and supporting cloud storage expansion.
3. The service logic layer comprises an image file access unit, a service logic processing unit and a service data access unit, the image file access unit performs data interaction with the medical image repository and controls medical image storage planning according to the characteristics of the medical images; the service logic processing unit triggers an intelligent image processing rule to perform service processing according to a preset service rule; the service data access unit and the service data storage bank perform data interaction with the service logic processing unit, the preset service rules comprise Find, Move and Store request and response mechanisms, the triggering intelligent image processing rules comprise pre-configuration routing rules, and the triggering intelligent image processing rules send or receive medical images, perform lossless compression on the medical images and perform distributed storage.
The service logic processing unit comprises a Server and an SCU (service Class user);
the Server is used as a module for providing services for the outside, and can receive find, move, store and comment requests of other DICOM devices through the interface, and return responses to be responsible for providing storage for the outside and inquiring the interface.
Find: as findscp (find Service Class provider). The method is used for providing a query interface for other DICOM equipment, acquiring a query result from a database according to a query condition after receiving a query request of other equipment, converting the result into a DICOM protocol and returning the DICOM protocol, and returning one record each time.
Move: the MoveSCP can receive a Move request and send images meeting the conditions to the SCP of a third party, the supported query conditions are different from FindSCP, the number of the conditions is small, and only 4 UIDs are fixed to each level. The PatientUID protocol only can carry one, but the studyInstanceUID, SerieInstanceUID and SOPINsentencUID can carry a plurality of groups, are divided by \ "and are generally matched with Find requests for use. The process is divided into two steps, first all images satisfying the condition are acquired, and then the images are sent out as StoreSCU in the sub-session. And after each image is sent, returning a Pending state to the MoveSCU, after all the images are sent, returning a final response, if all the images are successful, returning Success, if part of the images are successful or all the images are Warn, returning Warn, if all the images are Failed, returning Failed and the like.
Store: the system is used for providing a storage interface for the outside, uses a standard DICOM protocol as a storeSCP, and is responsible for receiving files, extracting file information, storing a file information database, carrying out fault-tolerant processing and uploading FastDFS (a lightweight distributed file storage system).
Performance optimization: by Mysql automatic reconnect and special error code retry: and setting an automatic reconnection mark when a new Mysql connection is established each time, and if the failure reason for executing Mysql is that the link is expired or the server is actively disconnected, reapplying a database connection and retrying the database operation. Retry by FastDFS: interacting with the FastDFS, when IO is extremely busy, it is easy to cause connection timeout, resulting in storage failure. When FastDFS storage fails, failure scenes are reduced by adopting a sleep mode for a period of time and a retransmission mode. Sleep time is 1+ thread number (0, 1, 2.) seconds. Reuse TimeWait network connections by modifying system configuration: when the network connection client initiates a disconnection request, but the server side does not have a sending end connection response all the time, the network connection enters a TimeWait state, and the reuse of the connection can be realized by modifying the configuration of an operating system.
SCU: and the system is responsible for interaction with a Portal, a Server and an external workstation. The function of SCU (service Class user) is realized, find, move and store requests can be sent to other DICOM devices through the data interface, the function of receiving inquiry/storage requests of Portal is taken, interaction with other DICOM devices is realized, and interaction results are fed back to Portal. The interaction with Portal uses TLV coding (Tag, Length, acronym of Value, Tag is expressed by 16-bit unsigned integer and identifies Tag to which this means; Length is used to express the Length of the Tag Value, that is, the Length of the following Value; Value expresses the Value of the element), and standard DICOM messages are used with other DICOM devices. The main messages processed by Portal are FindReq: go to other DICOM devices to query Patient, student, series, Image. MoveReq: the sending command enables one DICOM device to send images to another DICOM device. DcmToImageReq: a DICOM image is converted into a PNM image. This function is already fully implemented by Portal, not used, and not shown. GetDCMFileReq: and acquiring a certain DICOM file (uncompressed DICOM file after decompression). The Portal can convert the image into a Jpeg image to be displayed to a client or downloaded to the client after receiving the Jpeg image. UploadDCMFileReq: and receiving the small images uploaded by the Portal and then sending the small images to the Server for storage. Uploadhugegefcfilereq: and receiving the large image uploaded by the Portal, and not sending the large image to the Server for direct storage.
4. The system adopts a standard Ethernet networking mode and comprises a three-layer switch, the three-layer switch completes end-to-end data exchange according to an IP address of a third-layer network layer, not only can complete the port exchange function of a second-layer switch, but also can complete the routing function of part of routers, can support multi-layer dynamic integration, and improves the transmission performance of mass data in a local area network.
Various image devices can interact with the system for sending and receiving images through a TCP/IP interface on the premise of complying with the DICOM standard. Hospital information system HIS/radiology information management system RIS: the HIS/RIS system can modify patient information by sending instructions for patient name modification through HL7 protocol or send reports into the system through HL7 information; meanwhile, after receiving the new picture, the system sends the new picture to the appointed HIS/RIS system through HL7 information. L3-Switch: and the third-layer switch completes end-to-end data exchange directly according to the IP address of the third-layer network layer. The method can complete the port switching function of the second layer of switch, complete the routing function of part of routers, support multi-layer dynamic integration and improve the transmission performance of mass data in the local area network.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A compact medical image intelligent storage service system is characterized by comprising an external interface layer, a business logic layer and a data storage layer,
the external interface layer comprises a DICOM service unit connected with image equipment of a hospital, an HL7 service unit connected with a hospital information system and a radiation information management system of the hospital and a man-machine interaction unit used for operation of an administrator;
the data storage layer comprises a medical image storage library and a business data storage library;
the service logic layer comprises an image file access unit, a service logic processing unit and a service data access unit, wherein the image file access unit performs data interaction with the medical image repository and controls medical image storage planning according to the characteristics of the medical images; the service logic processing unit triggers an intelligent image processing rule to perform service processing according to a preset service rule; the service data access unit, the service data storage library and the service logic processing unit perform data interaction;
wherein: the service logic processing unit comprises a Server and an SCU;
the Server is used as a module for providing services for the outside, receives Find, Move, Store and comment requests of other DICOM equipment through an interface, returns a response and is responsible for providing a storage and query interface for the outside;
and the Find: the server is used as a FindSCP and is used for providing a query interface for other DICOM equipment, acquiring a query result from a database according to a query condition after receiving a query request of other equipment, converting the result into a DICOM protocol and returning the DICOM protocol, and returning one record each time;
the Move: the MoveSCP can accept the Move request and send the image meeting the conditions to the SCP of the third party, the supported query conditions are different from the FindSCP, the MoveSCP has few conditions, and only 4 UIDs are fixed as each level; wherein, the PatientUID protocol only can carry one protocol, but the studyInstanceUID, SerieInstanceUID and the SOPINsentencUID can carry a plurality of protocols, and are divided by \ "and matched with the Find request for use; the process is divided into two steps, firstly all images meeting the conditions are obtained, and then the images are sent out as storeSCU in the sub-session; after each image is sent, a Pending state is returned to the MoveSCU, after all the images are sent, a final response is returned, if all the images are successful, Success is returned, if part of the images are successful or all the images are Warn, Warn is returned, and if all the images are Failed, Failed is returned;
the storage: the system is used for providing a storage interface for the outside, uses a standard DICOM protocol as a storeSCP, and is responsible for receiving files, extracting file information, storing a file information database, carrying out fault-tolerant processing and uploading FastDFS, namely a lightweight distributed file storage system;
the SCU: the system is responsible for interaction with a Portal, a Server and an external workstation; the SCU plays a role of a Service Class User, can send Find, Move and Store requests to other DICOM equipment through a data interface, is responsible for receiving inquiry/storage requests of Portal, interacts with the other DICOM equipment and feeds back interaction results to the Portal; wherein the interaction with Portal uses encoding of TLVs, wherein: TLV is coded as the initial name of Tag, Length, Value, Tag is expressed by 16 bit unsigned integer to identify what meaning of Tag; length is used to indicate the Length of the Value of the Tag, i.e., the Length of the following Value; value represents the Value of TLV encoded elements, which is used with other DICOM devices as standard DICOM messages; the message from the Portal is processed by FindReq: querying other DICOM devices for Patient, student, series, Image; MoveReq: sending an instruction to enable one DICOM device to send an image to another DICOM device; DcmToImageReq: converting a certain DICOM image into a PNM image; GetDCMFileReq: acquiring a certain DICOM file, namely a decompressed non-compressed DICOM file; after receiving the Jpeg image, the Portal can convert the Jpeg image into a Jpeg image to be displayed to a client or download the Jpeg image to the client; UploadDCMFileReq: receiving the small image uploaded by the Portal, and then sending the small image to a Server for storage; uploadhugegefcfilereq: and receiving the large image uploaded by the Portal, and not sending the large image to the Server for direct storage.
2. The compact medical image intelligent storage service system according to claim 1, wherein the DICOM service unit is connected with an image device through a DICOM3.0 standard interface; the HL7 service unit is connected with a hospital information system and a radiation information management system of a hospital through an HL7 standard interface; the man-machine interaction unit provides a friendly management interface based on a WEB environment for an administrator.
3. The compact intelligent medical image storage service system according to claim 1, wherein the characteristics of the medical image include storage, communication and display of large-capacity digital information; the medical image storage planning control method comprises the steps of adopting a distributed system infrastructure, fully utilizing the high-speed operation and storage performance of a cluster and supporting cloud storage expansion.
4. The system of claim 1, wherein the predefined business rules include Find, Move, Store request and response mechanisms, and the triggered intelligent image processing rules include preconfigured routing rules, sending or receiving medical images, lossless compression of medical images, and distributed storage.
5. The compact intelligent medical image storage service system according to claim 1, wherein the system adopts a standard ethernet networking mode, and comprises a three-layer switch, and the three-layer switch completes end-to-end data exchange according to an IP address of a third layer network layer, so that not only can a port exchange function of the second layer switch be completed, but also routing functions of part of routers can be completed, multi-layer dynamic integration can be supported, and transmission performance of mass data in a local area network can be improved.
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| PCT/CN2020/104713 WO2022016560A1 (en) | 2020-07-22 | 2020-07-27 | Compact intelligent storage service system for medical images |
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