KR20160065714A - Method of accessing and processing web resource - Google Patents

Abstract

A method of accessing and processing a web resource according to the present invention is a method for allowing a certificated client terminal to access and process a VNA and a web resource. The web resource includes patient information, document information and image information. The client terminal includes a memory. The memory includes a patient information memory part which stores the patient information of the web resource, a document information memory part which stores the document information of the web resource, and an image information memory part which stores the image information of the web resource. So, access to binary data which indicates the image information can be carried out without time delay.

Description

[0001] METHOD OF ACCESSING AND PROCESSING WEB RESOURCE [

The present invention relates to a web resource accessing and processing method, and more particularly, to a method and system for accessing and processing web resources, which can use different standard http-based RESTful services, It is possible to extend XDS metadata so that it is possible to retrieve conditions according to a request of a client terminal even if a general purpose XDS technology is used instead of a technology made for a special purpose for medical image retrieval, The present invention relates to a web resource accessing and processing method capable of directly accessing binary data representing image information without having to search from the beginning of the image information when searching for image information.

In order to remotely search for a conventional DICOM image (medical image standard), there was information to be acquired preferentially in a patient ID database and the like. In order to retrieve DICOM images from a remote site, it is necessary to acquire Unique IDs such as StudyInstanceUID, SeriesInstanceUID, and SOPInstanceUID of DICOM images first.

When the current XDS technology is used for medical image retrieval, there is a problem that the process for inquiring or retrieving the document list is somewhat complicated and the configuration information must be processed by different protocols. In addition, it is possible to simplify the use of XDS with MHD technology, but there is a lack of connectivity between each information. Furthermore, there is a problem that access authority to each web resource is not constant.

Meanwhile, the conventional XDS metadata is defined by the information provided by the IHE, but it has a problem that it is difficult to retrieve other information. This is because XDS technology is not a general-purpose general purpose protocol for medical image retrieval. The information provided by the IHE includes information such as a language code and a format code, which are information that the user is uncomfortable or has little value as a search subject. The information number is an access number and an order number, But did not provide any information related to the information provided by the user. Therefore, it is necessary to register the extended metadata from the registration of the XDS Document. However, the medical image field has not had a problem in the past.

In addition, Bulkdata must be fetched by the REST method when the conventional image information is retrieved through DICOM Web, and a unique key (uuid) for Bulkdata is issued, and Bulkdata is returned based on the unique key. In this case, the method of fetching the Bulkdata corresponding to the unique key should be optimized, and the changed DICOM structure should be coped with. However, there is no algorithm that clearly processes the standard. Accordingly, when the client terminal accesses the DICOM image, it is desirable to provide the service without delay in the case of directly accessing the binary data representing the image information. However, there was.

Korean Patent Publication No. 2003-0062632 (published on July 28, 2003), a medical image storage and transmission system in a hospital, and a service method thereof

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to solve the problem that access rights to web resources are not constant, because it is possible to use different standards of http-based RESTful services. It is possible to extend XDS metadata so that it is possible to retrieve a condition according to a request of a client terminal even if a general purpose XDS technology is used instead of a technology created for a medical image search purpose, Which is capable of accessing binary data representing video information immediately without searching from the beginning of the video information when searching for the video information.

According to another aspect of the present invention, there is provided a method of accessing and processing a web resource by accessing a VNA, wherein the web resource includes at least one of patient information, document information, Wherein the client terminal comprises a memory, wherein the memory comprises: a patient information memory for storing patient information among the web resources; a document information memory for storing document information among the web resources; And an image information memory unit for storing medium image information.

According to the client terminal, a first authentication level for accessing patient information among the web resources, a second authentication level for accessing patient information and document information among the web resources, patient information among the web resources, An authentication level classifying step of classifying the first authentication level into a third authentication level that can access document information and image information; And an authentication level allocating step of allocating one of the first authentication level, the second authentication level and the third authentication level according to the client terminal.

Also, the client terminal accesses the patient information, the document information, and the image information in the order of the web resources, and loads the accessed information into the memory of the client.

When the client terminal is allocated with the first authentication level, the client terminal loads the patient information among the web resources into the memory of the client terminal, and when the client terminal is assigned with the second authentication level, Wherein the client terminal accesses the client information in the order of patient information and document information among the web resources and loads the accessed information into the memory of the client terminal, and when the client terminal is assigned with the third authentication level, Document information, and image information among the web resources, and loads the accessed information into the memory of the client terminal.

The patient information stored in the patient information memory unit may include patient information selected by the client terminal in the patient list, and the document information stored in the document information memory unit may include at least one of a medical document of the selected patient, And the image information included in the image information memory unit includes an image corresponding to the image list.

The client terminal uses the HL7 FHIR to access the patient information, the client terminal uses the IHE MHD to access the document information of the client terminal, and the web resource of the client terminal DICOM Web is used to access video information.

In addition, the document information includes XDS metadata, the XDS metadata includes an event code list item, and when the web resource is uploaded, May be uploaded via the XDS metadata expansion step, which further includes the interworking reference number of the other system.

The other system interworking reference number may be an order number, an authorization number, a request procedure ID, an access number, a billing number, .), And an account number (Account No.).

Also, when the client terminal accesses the web resource, it is possible to search using at least one of other system interworking reference numbers, and the retrieved information is loaded in the document information memory unit of the client terminal.

Meanwhile, the image information includes a unique key (uuid), and the unique key represents one binary data in the DICOM file, which is the image information. The binary information, which is the position information of the actual image information on the file structure of the image information, And a server to which the client terminal accesses includes a mapping table between the unique key and binary data that is actual image information, Referring to the connection table, the client terminal can access actual image information.

In addition, when the client terminal accesses the image information, the client terminal directly accesses the actual image information by referring to the unique key and the connection table, and loads the actual image information into the image information memory unit.

In addition, the reference point of the connection table may be adjusted when a file original position of the image information is changed, a file original of the image information is modified, or a file original of the image information is deleted.

According to the web resource accessing and processing method of the present invention,

First, it is possible to use different standards for http-based RESTful services.

Second, it is possible to solve the problem that access rights to medical image related web resources are not constant, which is important for privacy and security as personal information.

Third, it is possible to extend XDS metadata so that it is possible to retrieve conditions according to a request of a client terminal, even if a general purpose XDS technology is used instead of a technology made for a specific purpose for medical image retrieval.

Fourth, when retrieving image information from a remote location, it is possible to access binary data representing image information immediately without searching from the beginning of the image information.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an overall system for processing a web resource access and processing method according to a preferred embodiment of the present invention;
2 is a flowchart illustrating a method of accessing and processing a web resource according to a preferred embodiment of the present invention.
FIG. 3 is a diagram for explaining the XDS metadata expansion step in a web resource accessing and processing method according to a preferred embodiment of the present invention in more detail; FIG.
4 is a diagram illustrating an extension of the EventCodeList item in the XDS metadata,
FIG. 5 is a flowchart illustrating a step of expanding XDS metadata in a web resource accessing and processing method according to a preferred embodiment of the present invention,
FIG. 6 is an example of a case where document registration is performed by adding an access number (Access Number) as an example of the XDS metadata expansion step in the web resource accessing and processing method according to the preferred embodiment of the present invention,
FIG. 7 is a diagram illustrating a case where a document is retrieved using an access number (Access Number) after a step of expanding XDS metadata in a web resource accessing and processing method according to a preferred embodiment of the present invention.
8 is a view for explaining a method for enabling direct access to binary data representing image information without searching from the beginning of image information when retrieving image information remotely using a unique key and a connection table .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

FIG. 1 is a configuration diagram of an overall system for processing a web resource accessing and processing method according to a preferred embodiment of the present invention, and FIG. 2 is a diagram illustrating each step of a web resource accessing and processing method according to a preferred embodiment of the present invention to be.

As shown in FIG. 1, the present invention is a method for accessing and processing Web resources by accessing a Vendor Neutral Archive (VNA) by an authenticated client terminal. The client terminal includes a patient information memory unit for storing patient information, a document information memory unit for storing document information, and an image information memory for storing image information, wherein the web information comprises patient information, document information and image information, And a memory.

In addition, according to a client terminal having a web browser, it is possible to use OpenAuth to grant access authority to web resources. It is possible to define the scope field with OpenAuth, and to set the minimum level at which each can be accessed. Specifically, a first authentication level for accessing patient information, a second authentication level for accessing patient information and document information, a third authentication level for accessing patient information, document information, and image information Authentication level classification step; And an authentication level allocating step of allocating an authentication level of any one of a first authentication level, a second authentication level and a third authentication level according to the client terminal. Through this, it is possible to solve the problem that the access right to medical image related web resources, which is extremely important as confidentiality and security as conventional personal information, is not constant.

As shown in FIGS. 1 and 2, the client terminal accesses (S100, S200, and S300) in the order of patient information, document information, and image information among the web resources and loads the accessed information into the memory of the client S150, S250, and S350), the necessary information can be quickly retrieved from the web browser of the client terminal.

When the client terminal is assigned with the first authentication level in conjunction with the above-described authentication level, the client terminal loads the patient information into the memory of the client terminal, and when the client terminal is assigned with the second authentication level, , Patient information, and document information, and the accessed information is loaded into the memory of the client terminal. When the client terminal is assigned with the third authentication level, the client terminal transmits the patient information, the document information, And loads the accessed information into the memory of the client terminal.

Here, the patient information stored in the patient information memory unit includes information of the patient selected by the client terminal in the patient list held by the master patient index (MPI), and the document information stored in the document information memory unit includes information A medical document, and an image list of the selected patient, and the image information loaded in the image information memory unit includes an image corresponding to the image list. The MPI represents an electronic database that holds the name, contact and medical information of the patients enrolled at the facility. The image information also includes binary data (or binary data).

At this time, the client terminal accesses the patient information of the MPI using HL7 FHIR or HL7 FHIR.Patient (JSON), and accesses the document information of the client terminal using the IHE MHD or IHE MHD Document Dossier (JSON) , DICOM Web or DICOM WADO RS (JSON, Bulkdata) is used to access the image information of the client terminal. Through this, the client terminal calls the DICOM image from the VNA.

FIG. 3 is a view for explaining the XDS metadata expansion step in the Web resource accessing and processing method according to the preferred embodiment of the present invention in more detail. FIG. 4 illustrates an extension of the EventCodeList item in the XDS metadata FIG. 5 is a flowchart illustrating the XDS metadata expansion step in a web resource accessing and processing method according to a preferred embodiment of the present invention in more detail.

As shown in FIGS. 3 to 5, the present invention configures the XDS metadata extensibly so as to retrieve a condition according to a request of a client terminal. That is, the XDS metadata is extended to a Classification Element that can be arbitrarily defined in the EventCodeList item. Classification consists of Code Scheme (Slot Value) and Code (NodeRepresentation). Code Scheme uses the name of the item, and the defined code scheme does not receive validation from the Registry. In the Stored Query of the Registry, it is possible to search by including the Classification which is arbitrarily defined by FindDocument. The Code Scheme that can be arbitrarily defined can include at least the image information or other system interworking reference information (information generated in the medical information system such as accession number and order number). The XDS Metadata is represented by the Document Dossier by the IHE MHD.

3, an XDS document upload is stored in a document repository 200 via a document source 400 via an XDS metadata extension module 300, (Document Registry) 100 as shown in FIG. When searching for an XDS document, the document consumer 500 searches the document registry 100 through an XDS metadata extension module 300.

5, a step S400 of checking a search condition requested by the client terminal, a step S500 of expanding the XDS metadata to include the search condition, (S600), creating XDS metadata by adding an extended search condition at this time (S700), searching a document in the XDS Document Registry (S800), outputting the retrieved result to the client terminal S900).

In this way, when the client terminal accesses the web resource, it is possible to search using at least one of the other system interworking reference numbers, and the retrieved information is loaded into the document information memory unit of the client terminal.

For reference, an order number, an authorization number, a request ID, an access number, a billing number, and a billing number, which are reference numbers for interworking with other systems, And the account number (Account No.) will be described as follows.

The access number is a unit that can be bound to a specific purpose from the time when a video shooting request is generated from the order to the stage of execution (Acquisition, Treatment). The time of occurrence occurs from the HIS / EMR and is used as a number representing the order issued by HIS / EMR.

The account number is a unit that bundles a series of processes that occur until the moment the patient visits and receives all the medical services and leaves the hospital. It can be used to issue a number of receipts that occur when the patient is admitted or visited.

The order number is a number indicating a bundle of requests for medical treatment, such as treatment, prescription, and examination, for a specific purpose in reality. An example of a request bundle is: When different types of treatment, such as a health checkup, and the issuance of different reports are required, different requests with specific health examinations will be issued through one Order. It can be treated the same as Accession No.

The Requested Procedure ID (ID) is the unique value of the Requested Procedure when it is issued, and this value is the value that is transmitted to the lowest level such as the equipment. It is issued by the order filler system, which means that photographing, inspection and the like are performed for the same purpose. The importance of the Requested Procedure ID is that this value acts as a key value in connection with other systems. Standing Order Play (Order Placer) - Connection of the Order Filler (Order Filler) Accession No. Although the Order Filler (Order Filler) - Inspection equipment (Modality), order filler (Order Filler) -PACS, order filler (Order Filler) - Intermediate links such as Report Builder use this value.

Authorization No. is a number related to the permission of the radiologist who takes the radiography or the permission of the insurance company to be photographed when requesting the radiography.

FIG. 6 is a diagram illustrating an example of a step of expanding XDS metadata in a Web resource accessing and processing method according to a preferred embodiment of the present invention, in which document registration is performed by adding Accession No., FIG. FIG. 4 is a diagram illustrating a case where a document is retrieved using an Accession No. after the XDS metadata expansion step in the web resource accessing and processing method according to FIG.

On the other hand, FIG. 8 illustrates a method for enabling direct access to binary data representing image information without searching from the beginning of image information when retrieving image information remotely using a unique key and a connection table FIG.

According to the present invention, the image information includes a unique key (uuid), the unique key represents one binary data in the DICOM file which is the image information, and the position information of the actual image information on the file structure of the image information Wherein a server connected to the client terminal includes a mapping table between the unique key and binary data that is actual image information, With reference to the unique key and the connection table, the client terminal can access the actual image information. Through this, it does not additionally generate unnecessary query time by inquiring from the beginning of the image information.

Here, the items included in the connection table include a reference pointer indicating a position of an uniquely key (uuid), a video file reference position (File Reference) and a binary data in the original file (Offset) (At least one of Study Instance UID, Series Instance UID, and SOP Instance UID) in the file.

In addition, when the client terminal accesses the image information, the client terminal directly accesses the actual image information by referring to the unique key and the connection table, and then loads the actual image information into the image information memory unit.

Further, when the file original position of the image information is changed, the file original of the image information is modified, or the file original of the image information is deleted, the reference point of the link table is adjusted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various modifications and changes may be made without departing from the scope of the appended claims.

Claims (13)

A method for accessing and processing a web resource by an authorized client terminal accessing a VNA,
The web resource comprises patient information, document information, and image information,
The client terminal includes a memory,
Wherein the memory comprises a patient information memory unit for storing patient information among the web resources, a document information memory unit for storing document information among the web resources, and an image information memory unit for storing image information among the web resources.
The method according to claim 1,
A first authentication level for accessing patient information among the web resources, a second authentication level for accessing patient information and document information among the web resources, patient information among the web resources, document information And a third authentication level accessible to the image information; And
And assigning an authentication level of any one of a first authentication level, a second authentication level and a third authentication level according to the client terminal.
The method according to claim 1,
Wherein the client terminal accesses the patient information, the document information, and the image information among the web resources in order, and loads the accessed information into the memory of the client.
3. The method of claim 2,
When the client terminal is assigned with the first authentication level, the client terminal loads the patient information among the web resources into the memory of the client terminal,
When the client terminal is assigned a second authentication level, the client terminal accesses the patient information and the document information in the web resources in order, loads the accessed information into the memory of the client terminal,
When the client terminal is assigned a third authentication level, the client terminal accesses the patient information, the document information, and the image information among the web resources in order and loads the accessed information into the memory of the client terminal .
The method according to claim 1,
Wherein the patient information stored in the patient information memory unit includes information of a patient selected by the client terminal in the patient list,
Wherein the document information stored in the document information memory unit includes a medical document of the selected patient and a video list of the selected patient,
Wherein the image information stored in the image information memory unit includes an image corresponding to the image list.
The method according to claim 1,
The client terminal uses the HL7 FHIR to access patient information among the web resources,
The client terminal uses the IHE MHD to access document information among the web resources,
Wherein the client terminal accesses the image information among the web resources using the DICOM Web.
The method according to claim 1,
The document information includes XDS metadata,
The XDS metadata includes an event code list (EventCodeList) item,
Wherein when the web resource is uploaded, the event code list item is further uploaded via an XDS metadata expansion step such that it further includes another system interworking reference number.
8. The method of claim 7,
The other system interworking reference number may be an order number, an authorization number, a request procedure ID, an access number, a billing number, , And an account number (Account No.).
8. The method of claim 7,
Wherein when the client terminal accesses the web resource, it is possible to search using at least one of other system interworking reference numbers, and the retrieved information is loaded in the document information memory unit of the client terminal.
10. The method of claim 9,
The other system interworking reference number may be an order number, an authorization number, a request procedure ID, an access number, a billing number, , And an account number (Account No.).
The method according to claim 1,
The image information includes a unique key (uuid)
The unique key represents one binary data in the DICOM file which is the image information and has offset information of binary data which is position information of actual image information on the file structure of the image information as a reference point,
The server connected to the client terminal includes a mapping table between the unique key and binary data that is actual image information,
Wherein the client terminal is able to access actual image information with reference to the unique key and the connection table.
12. The method of claim 11,
When the client terminal accesses the image information, accessing the actual image information by referring to the unique key and the connection table, and loading the real image information into the image information memory unit.
13. The method of claim 12,
Wherein the reference point of the connection table is adjusted when a file original position of the image information is changed, a file original of the image information is modified, or a file original of the image information is deleted.

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