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1、BRITISH STANDARD BS ISO 18232:2006 Health Informatics Messages and communication Format of length limited globally unique string identifiers ICS 35.240.80 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 18232:2006 This British Stand
2、ard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2006 BSI 2006 ISBN 0 580 48302 9 National foreword This British Standard reproduces verbatim ISO 18232:2006 and implements it as the UK national standard. The UK participation in its preparation was entrus
3、ted to Technical Committee IST/35, Health informatics, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document ma
4、y be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users
5、are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, a
6、nd keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 9 and a back cover. The BSI copyright notic
7、e displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 18232:2006(E) INTERNATIONAL STANDARD ISO
8、 18232 First edition 2006-04-01 Health Informatics Messages and communication Format of length limited globally unique string identifiers Informatique de sant Messages et communication Format des identifiants uniques universels cods en caractre et limits en longueur BS ISO 18232:2006 Licensed Copy:
9、sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms, defini
10、tions and abbreviated terms . 1 3.1 Terms and definitions. 1 3.2 Abbreviated terms 2 4 Globally unique string identifier field. 2 5 ISO/IEC data object identifier GUSI exchange format. 2 5.1 General. 2 5.2 Logical data format. 2 5.3 Character representation. 3 5.4 Encoding 3 5.5 Integer component re
11、presentation . 3 5.6 Integer component separator 3 5.7 Interpretation of the data object identifier string 3 6 128 bit globally unique string identifier format . 3 6.1 General. 3 6.2 Logical data format. 3 6.3 Character representation. 3 6.4 UUID components. 3 6.5 Encoding 3 Annex A (informative) Sc
12、enarios 4 Annex B (informative) Nature and application of Data Object Identifiers 5 Annex C (informative) ASN.1 specification for the exchange of OID and UUIDs 8 BS ISO 18232:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword I
13、SO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical c
14、ommittee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electr
15、otechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the m
16、ember bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identi
17、fying any or all such patent rights. ISO 18232 was prepared by Technical Committee ISO/TC 215, Health informatics. BS ISO 18232:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI v Introduction Data objects used in medicine include reports
18、 and results of diagnostic procedures which are stored and exchanged in electronic form, and objects such as templates. Applications must be able to find the location and the identification of such objects. Object identifiers are often numeric in form. This International Standard provides a means of
19、 exchanging globally unique identifiers expressed as character strings. It is not concerned with the specification of the location from which a data object may be retrieved. A healthcare service for a patient is delivered in identifiable parts which may be termed healthcare service items. A healthca
20、re service item can be performed for a patient by a healthcare professional, or a healthcare professional may request a healthcare service item to be performed by another healthcare professional or by a healthcare service department such as a medical imaging service department. Healthcare service it
21、em results arise from numerical measurement or assessment by a healthcare professional. Individual numerical results may be included within report text, perhaps in a table. Sets of numerical results may be presented visually e.g. waveform (graph) or image (picture). Results that consist of a large n
22、umber of measured values such as a waveform or digital image are known as data objects. To allow safe use in medicine, all data objects must be identified by a globally unique identifier (GUI), such as an ISO OID or binary MS GUI. The GUI allocated to a data object is attached to the data object (e.
23、g. by including it within a computer file header section). The reference to a data object includes the GUI of the data object as well as the path to the data object. The application that retrieves the data object can verify that the correct data have been retrieved by matching the GUI in the referen
24、ce to the GUI attached to the data object. See Annex A for relevant scenarios. It may be noted that: a) the issue of the location of a data object is separate from the issue of its identity; indeed several identical copies of the object may exist; b) a globally unique data object identifier is inten
25、ded for machine use and may be quite large; c) a short, user-friendly, locally unique identifier is often required in addition to the globally unique identifier for human use. (This is outside the scope of this International Standard.) Globally unique identifiers are already specified in various sta
26、ndards and the intention of this International Standard is to provide a specification for a common format for the exchange of commonly used globally unique identifiers expressed as alphanumeric strings. A logical data format for globally unique identifiers constructed from a sequence of integers is
27、defined by ISO/IEC 8824-1. Identifiers based on ISO/IEC 8824-1 are widely used in medical imaging. 128 bit universal unique identifiers (UUIDs) are widely used in the MS Windows environment. This International Standard specifies the format of alphanumeric string fields for the exchange of globally u
28、nique string identifiers (GUSI) BS ISO 18232:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 Health Informatics Messages
29、and communication Format of length limited globally unique string identifiers 1 Scope This International Standard specifies the encoding and length for globally unique identifiers for data objects used in healthcare exchanged as alphanumeric strings. The technologies used for data storage, location
30、and communication are outside the scope of this International Standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced
31、 document (including any amendments) applies. ISO/IEC 646, Information technology ISO 7-bit coded character set for information interchange ISO/IEC 8824-1:2002, Information technology Abstract Syntax Notation One (ASN.1): Specification of basic notation Part 1 ISO/IEC 9834 (all parts), Information T
32、echnology Open Systems Interconnection Procedures for the operation of OSI Registration Authorities DICOM PS 3.3, Digital Imaging and Communications in Medicine Part 3: Information Object Definitions DICOM PS 3.4, Digital Imaging and Communications in Medicine Part 4: Service Class Specifications DI
33、COM PS 3.5, Digital Imaging and Communications in Medicine Part 5: Data Structures and Encoding 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions 3.1.1 information object well-defined piece of information, definition, or specification which requires a name in order to identify its
34、 use in communication NOTE Adapted from ISO/IEC 8824-1. 3.1.2 object identifier OID value (distinguishable from all other such values) that is associated with an information object NOTE Adapted from ISO/IEC 8824-1. BS ISO 18232:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT
35、+00:00 2006, Uncontrolled Copy, (c) BSI 2 3.1.3 data object identifier sequence of integer components constructed as specified in ISO/IEC 8824-1, having a root sequence of components issued by a national standards body and sequence of following integer components whose uniqueness is guaranteed by th
36、e organization that defined it NOTE Which is guaranteed to be globally unique by that national body registered as specified by ISO 9834. 3.1.4 unique identifier identifier that is different from any other such identifier within a given namespace 3.1.5 globally unique identifier identifier that is di
37、fferent from any other such identifier in any domain namespace 3.1.6 globally unique string identifier alphanumeric string of maximum length 64 characters, which is different from any other alphanumeric string that has been or will be exchanged according to the provisions of this International Stand
38、ard 3.2 Abbreviated terms GUI globally unique identifier OID object identifier UID unique identifier (DICOM) GUSI globally unique string identifier UUID universal unique identifier 4 Globally unique string identifier field When communicated by means of electronic data exchange the field containing t
39、he GUSI shall conform to the following: a) length: 64 octets; b) type: alphanumeric. NOTE The object identifier field might be included as part of the data object metadata or might be part of a “wrapper” containing the data object. However this issue is outside the scope of this International Standa
40、rd. 5 ISO/IEC data object identifier GUSI exchange format 5.1 General Applications that conform to this clause shall support the use of object identifiers (OIDs) as specified by ISO/IEC 8824-1 and shall be constructed and encoded according to 5.2 to 5.7. 5.2 Logical data format Data object identifie
41、rs shall be constructed from a sequence of integer components in accordance with the provisions of ISO/IEC 8824-1 and ISO/IEC 9834-7. BS ISO 18232:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 5.3 Character representation Data objec
42、t identifier integer components shall be represented as a character string using the following characters: “0“, “1“, “2“, “3“, “4“, “5“, “6“, “7“, “8“, “9“, “.“ NOTE See Annex A for an example. 5.4 Encoding A data object identifier shall be encoded as an alphanumeric string of 8 bit octets as specif
43、ied by ISO/IEC 646. 5.5 Integer component representation An integer component shall not start with a zero character unless the component consists of a single zero. 5.6 Integer component separator A single full stop (2E hexadecimal) character shall separate sequential components. NOTE There is no lea
44、ding or trailing full stop. 5.7 Interpretation of the data object identifier string The root components allocated by a national body for use by an organization as the leading components of all data object identifiers created by that organization may carry meaning for the national body. However, appl
45、ications shall not infer any semantic information from any component of the data object identifier. 6 128 bit globally unique string identifier format 6.1 General The alphanumeric field specified in Clause 4 may also be used to hold a 128 bit binary number encoded using hexadecimal notation construc
46、ted as an alphanumeric string as specified in 6.2 to 6.5. See Annex C.3. Applications that conform to this International Standard and exchange 128 bit identifiers shall conform to the indications given in 6.2 to 6.5. 6.2 Logical data format The logical data format shall be a 128 bit binary number. 6
47、.3 Character representation 128 bit data object identifiers shall be represented by a sequence of octets using the following characters: “0“, “1“, “2“, “3“, “4“, “5“, “6“, “7“, “8“, “9“, “a“, “b“, “c“, “d“, “e“, “f“, “-“ 6.4 UUID components The character string shall consist of a sequence of 5 compo
48、nents of lengths 8, 4, 4, 4 and 12 octets respectively, separated by a hyphen octet (2D hexadecimal) 6.5 Encoding A data object identifier shall be encoded as an alphanumeric string of 8 bit octets as specified by ISO/IEC 646. NOTE This clause supports the identifiers as given in the specifications
49、of universal unique identifiers (UUIDs). See Annex B. BS ISO 18232:2006 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 02:56:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 Annex A (informative) Scenarios A.1 Verification of the identity of a referenced data object A diagnostic procedure report may reference procedure products such as curves, waveforms, histograms and images recorded in electronic form. The observer of the results presented must be confident that the data
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