Материал: part07

Note​

Such an occurrence of a "Failed" response is often called an early failed response.​

10.1.5 N-CREATE Service​

The N-CREATE service is used by a DIMSE Service User to request a peer DIMSE Service User to create a new managed SOP In-​ stance, complete with its identification and the values of its associated Attributes, and simultaneously to register its identification. It​ is a confirmed service.​

10.1.5.1 N-CREATE Parameters​

Table 10.1-5 lists the parameters for this service.​

Table 10.1-5. N-CREATE Parameters​

10.1.5.1.1 Message ID​

This parameter identifies the operation. It is used to distinguish this operation from other notifications or operations that the DIMSE​ ServiceProvidermayhaveinprogress.NotwoidenticalvaluesfortheMessageID(0000,0110)shallbeusedforoutstandingoperations​ or notifications.​

Note​

TheMessageID(0000,0110)isrecommendedtobeuniquewithinthescopeofanAssociation,tosupportdebugprocedures.​

10.1.5.1.2 Message ID Being Responded To​

This parameter specifies the Message ID (0000,0110) of the operation request/indication to which this response/confirmation applies.​

10.1.5.1.3 Affected SOP Class UID​

For the request/indication, this parameter specifies the SOP Class of the new SOP Instance that is to be created by the performing​ DIMSE Service User. The performing DIMSE Service User assigns to the new SOP Instance, a set of Attribute Values as specified​ by the definition of its SOP Class. For the response/confirmation, this parameter specifies the SOP class of the SOP Instance that​ was created. It may be included in the response/confirmation. If included in the response/confirmation, this parameter shall be equal​ to the value in the request/indication.​

10.1.5.1.4 Affected SOP Instance UID​

For the request/indication, this parameter specifies the SOP Instance that is used by the performing DIMSE Service User. If the SOP​ Instance UID is not supplied by the invoking DIMSE Service User, then the performing DIMSE Service User assigns a value to this​ identification of instance. For the response/confirmation, this parameter may only be included in the success response/confirmation​ and shall be included if it is not supplied by the invoking DIMSE Service User.​

10.1.5.1.5 Attribute List​

When this parameter is supplied by the invoking DIMSE Service User, it contains a set of Attribute identifiers and values that the​ performing DIMSE Service User is to assign to the new managed SOP Instance. When returned by the performing DIMSE Service​

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User in the success response/confirmation, this parameter contains the complete list of all Attribute identifiers and values that were​ assigned to the new managed SOP Instance.​

10.1.5.1.6 Status​

This parameter contains the error or success notification for the operation. It shall be included by the performing DIMSE Service User​ in any response/confirmation. The following type of status may occur (see also Annex C):​

•​Duplicate invocation (0210H) - the Message ID (0000,0110) specified is allocated to another notification or operation.​

•​DuplicateSOPInstance(0111H)-thenewmanagedSOPInstanceValuesuppliedbytheinvokingDIMSEServiceUserwasalready​ registered for a managed SOP Instance of the specified SOP Class.​

•​Invalid Attribute Value (0106H) - the Attribute Value specified was out of range or otherwise inappropriate.​

•​Attribute Value out of range (0116H) - the Attribute Value specified was out of range or otherwise inappropriate. The SCP will apply​ a default value or will not include the attribute in the created instance.​

•​Invalid SOP Instance (0117H) - the SOP Instance UID specified implied a violation of the UID construction rules.​

•​Missing Attribute (0120H) - a required Attribute was not supplied.​

•​Missing Attribute Value (0121H) - a required Attribute Value was not supplied and a default value was not available.​

•​Mistyped argument (0212H) - one of the parameters supplied has not been agreed for use on the Association between the DIMSE​ Service Users.​

•​No such Attribute (0105H) - the Tag for the specified Attribute was not recognized.​

•​Attribute list error (0107H) -one or more specified Attributes were not recognized and not included in the created instance.​

•​No such SOP Class (0118H) - the SOP Class was not recognized.​

•​Processing Failure (0110H) - a general failure in processing the operation was encountered.​

•​Resource Limitation (0213H) - the operation was not performed due to resource limitation.​

•​Success (0000H) - successful operation.​

•​Unrecognized operation (0211H) - the operation is not one of those agreed between the DIMSE Service Users.​

•​Refused: Not authorized (0124H) - the DIMSE Service User was not authorized to invoke the operation.​

•​Failed (Status value is Service Class specific): no instance was created by the DIMSE Service User​

•​Warning (Status value is Service Class specific): the DIMSE Service User created an Instance but did not perform all specified​ operations​

10.1.5.2 N-CREATE Service Procedures​

The following N-CREATE procedures apply:​

a.​The invoking DIMSE Service User requests the creation and registration of a new managed SOP Instance by issuing an N-​ CREATE request primitive to the DIMSE Service Provider.​

b.​The DIMSE-service provider issues an N-CREATE indication primitive to the performing DIMSE Service User.​

c.​If the operation can be performed, the performing DIMSE Service User creates and registers the new managed SOP Instance​ andgeneratesaresponseindicatingacceptanceoftheN-CREATErequestprimitivebyissuinganN-CREATEresponseprimitive​ to the DIMSE Service Provider. In this case the following procedure does not apply.​

d.​If the operation cannot be performed, then the performing DIMSE Service User rejects the N-CREATE request by issuing an N-​ CREATE response primitive with the appropriate error code to the DIMSE Service Provider.​

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e.​The DIMSE Service Provider issues an N-CREATE confirmation primitive to the invoking DIMSE Service User, completing the​ N-CREATE operation.​

The performing DIMSE Service User may return an N-CREATE response primitive with the status of Failed or Refused before the​ entireN-CREATEindication(DataSet)hasbeencompletelytransmittedbytheinvokingDIMSEServiceUser.AN-CREATEresponse​ primitive with the status of Success or Warning shall not be returned until the entire N-CREATE indication has been received by the​ performing DIMSE Service User.​

Note​

Such an occurrence of a "Failed" response is often called an early failed response.​

10.1.6 N-DELETE Service​

The N-DELETE service is used by an invoking DIMSE Service User to request a peer DIMSE Service User to delete a managed SOP​ Instance and to de-register its identification. It is a confirmed service.​

10.1.6.1 N-DELETE Parameters​

Table 10.1-6 lists the parameters for this service.​

Table 10.1-6. N-DELETE Parameters​

10.1.6.1.1 Message ID​

This parameter identifies the operation. It is used to distinguish this operation from other notifications or operations that the DIMSE​ ServiceProvidermayhaveinprogress.NotwoidenticalvaluesfortheMessageID(0000,0110)shallbeusedforoutstandingoperations​ or notifications.​

Note​

TheMessageID(0000,0110)isrecommendedtobeuniquewithinthescopeofanAssociation,tosupportdebugprocedures.​

10.1.6.1.2 Message ID Being Responded To​

This parameter specifies the Message ID (0000,0110) of the operation request/indication to which this response/confirmation applies.​

10.1.6.1.3 Requested SOP Class UID​

This parameter specifies the SOP Class that is to be deleted.​

10.1.6.1.4 Requested SOP Instance UID​

This parameter specifies the SOP Instance that is to be deleted.​

10.1.6.1.5 Affected SOP Class UID​

This parameter may be included in the response/confirmation. If included in the response/confirmation, this parameter shall be equal​ to the parameter value used in the request/indication.​

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10.1.6.1.6 Affected SOP Instance UID​

This parameter specifies the SOP Instance that was deleted. It may be included in any response/confirmation and when included​ shall be equal to the Requested SOP Instance UID (0000,1001) parameter value used in the invocation.​

10.1.6.1.7 Status​

This parameter contains the error or success notification for the operation. It shall be included by the performing DIMSE Service User​ in any response/confirmation. The following types of status may occur (see also Annex C):​

•​Class-Instance conflict (0119H) - the specified SOP Instance is not a member of the specified SOP Class​

•​Duplicate invocation (0210H) - the Message ID (0000,0110) specified is allocated to another notification or operation​

•​Invalid SOP Instance (0117H) - the SOP Instance UID specified implied a violation of the UID construction rules​

•​Mistyped argument (0212H) - one of the parameters supplied has not been agreed for use on the Association between the DIMSE​ Service Users​

•​No such SOP Class (0118H) - the SOP Class was not recognized​

•​No such SOP Instance (0112H) - the SOP Instance was not recognized​

•​Processing Failure (0110H) - a general failure in processing the operation was encountered​

•​Resource Limitation (0213H) - the operation was not performed due to resource limitation​

•​Success (0000H) - successful operation​

•​Unrecognized operation (0211H) - the operation is not one of those agreed between the DIMSE Service Users​

•​Refused: Not authorized (0124H) - the DIMSE Service User was not authorized to invoke the operation.​

10.1.6.2 N-DELETE Service Procedures​

The following N-DELETE procedures apply:​

a.​The invoking DIMSE Service User requests the performing DIMSE Service User to delete a managed SOP Instance by issuing​ an N-DELETE request primitive to the DIMSE Service Provider.​

b.​The DIMSE-service provider issues an N-DELETE indication primitive to the performing DIMSE Service User.​

c.​Iftheoperationcanbeperformed,theperformingDIMSEServiceUserdeletesthespecifiedmanagedSOPInstanceandgenerates​ a response indicating acceptance of the N-DELETE request primitive by issuing an N-DELETE response primitive to the DIMSE​ Service Provider. In this case the following procedure does not apply.​

d.​If the operation cannot be performed, then the performing DIMSE Service User rejects the N-DELETE request by issuing an N-​ DELETE response primitive with the appropriate error code to the DIMSE Service Provider.​

e.​The DIMSE Service Provider issues an N-DELETE confirmation primitive to the invoking DIMSE Service User, completing the​ N-DELETE operation.​

10.2 Sequencing​

10.2.1 Types of Services​

All operation and notifications shall be confirmed services.​

10.2.2 Usage Restrictions​

These services may only be invoked within the context of an established Association.​

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10.2.3 Disrupted Procedures​

These services do not disrupt any other service procedure.​

10.2.4 Disrupting Procedures​

These services are disrupted by the A-ABORT service procedure.​

10.3 Protocol​

This section specifies the protocol necessary to perform the set of DIMSE-N operations and notifications. The Value Representations​ (VR) specified in the following tables shall be encoded as defined in PS3.5.​

10.3.1 N-EVENT-REPORT Protocol​

The information necessary for the N-EVENT-REPORT request and indication DIMSE-N primitives are conveyed in the N-EVENT-​ REPORT-RQ Message. The information necessary for the N-EVENT-REPORT response and confirmation DIMSE-N primitives are​ conveyed in the N-EVENT-REPORT-RSP Message.​

10.3.1.1 N-EVENT-REPORT-RQ​

The N-EVENT-REPORT-RQ Message contains fields as defined in Table 10.3-1. Each field shall conform to DICOM encoding and​ ValueRepresentationasdefinedinPS3.5.FieldsarerequiredasspecifiedintheN-EVENT-REPORTservicedefinitionunlessotherwise​ noted in Table 10.3-1. Fields not specified in the N-EVENT-REPORT service definition but present in Table 10.3-1 are required by​ the DIMSE-N protocol.​

Table 10.3-1. N-EVENT-REPORT-RQ Message Fields​

Note​

1.​Service Class Specifications contained in PS3.4 defines the values needed for the Event Type ID parameter.​

2.​Service Class Specifications contained in PS3.4 defines the Data Set needed for the Event Information parameter.​

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