7.1.5.1.1.6. DICOM Instances Accessed¶

7.1.5.1.1.6.1. Trigger Events¶

This message is emitted by the archive in following cases :

Some objects / series of study are rejected using UI
Some objects / series of study are rejected in an external archive using UI
Rejection Notes for some objects of a study are stored to the archive using RAD-66 transaction.
Objects are retrieved from an external archive by HL7 Prefetch Scheduler
Update study/series expiration date using UI / Study Retention Policy / HL7 Study Retention Policy.
Update study attributes using UI.
Previous series/instances of a study are deleted on subsequent receive of objects having same SOP IUID but different Series IUID

7.1.5.1.1.6.2. Message Structure¶

Table 7.28 Entities in DICOM Instances Accessed Audit Message¶
Event Identification
Active Participant : Archive application
Active Participant : Initiator
Audit Source
Participant Object Identification : Study
Participant Object Identification : Patient

Table 7.29 Event Identification¶
Field Name	Opt	Description
EventID	M	EV (110103, DCM, ‘DICOM Instances Accessed’)
EventActionCode	M	Rejection / Deletion case : Delete ⇒ ‘D’ Update study attributes / expiration date case : Update ⇒ ‘U’ Update expiration date for frozen study / series case : Read ⇒ ‘R’
EventDateTime	M	The time at which the event occurred
EventOutcomeIndicator	M	Success ⇒ ‘0’ Minor failure ⇒ ‘4’
EventOutcomeDescription	M	Rejection / Deletion case : Success ⇒ ‘Rejection Code Meaning’ Rejection / Deletion case : Minor failure ⇒ ‘Rejection Code Meaning + Error/Exception message’ All other cases case : Minor failure ⇒ ‘Error/Exception message’

Table 7.30 Active Participant : Archive application¶
Field Name	Opt	Description
UserID	M	Action triggered using association ⇒ ‘Application entity title of Archive Device used in the association’ Action triggered using archive UI ⇒ ‘Invoked URL’ Action triggered using HL7 messages ⇒ ‘Receiving Application and Facility’
UserIDTypeCode	U	Action triggered using association ⇒ EV (110119, DCM, ‘Station AE Title’) Action triggered from UI ⇒ EV (12, RFC-3881, ‘URI’) Action triggered using HL7 messages ⇒ EV (HL7APP, 99DCM4CHEE, ‘Application and Facility’)
UserTypeCode	U	Application ⇒ ‘2’
AlternativeUserID	MC	Process ID of Audit logger
UserIsRequestor	M	false
NetworkAccessPointID	U	Hostname/IP Address of the connection referenced by Audit logger
NetworkAccessPointTypeCode	U	NetworkAccessPointID is host name ⇒ ‘1’ NetworkAccessPointID is an IP address ⇒ ‘2’

Table 7.31 Active Participant : Initiator¶
Field Name	Opt	Description
UserID	M	Action triggered using association ⇒ ‘Application entity title of initiating system’ Action triggered using UI : Secured Archive ⇒ ‘User name of logged in user’ Action triggered using UI : Unsecured archive ⇒ ‘Remote IP address’ Action triggered using HL7 messages ⇒ ‘Sending Application and Facility’
UserIDTypeCode	U	Action triggered using archive UI (Secured archive) ⇒ EV (113871, DCM, ‘Person ID’) Action triggered using archive UI (Unsecured archive) ⇒ EV (110182, DCM, ‘Node ID’) Action triggered using association ⇒ EV (110119, DCM, ‘Station AE Title’) Action triggered using HL7 messages ⇒ EV (HL7APP, 99DCM4CHEE, ‘Application and Facility’)
UserTypeCode	U	Action triggered using archive UI : Person ⇒ ‘1’ Action triggered using association : Application ⇒ ‘2’
UserIsRequestor	M	true
NetworkAccessPointID	U	Hostname/IP Address of calling host
NetworkAccessPointTypeCode	U	NetworkAccessPointID is host name ⇒ ‘1’ NetworkAccessPointID is an IP address ⇒ ‘2’

Table 7.32 Participant Object Identification : Study¶
Field Name	Opt	Description
ParticipantObjectID	M	Study Instance UID or 1.2.40.0.13.1.15.110.3.165.1 if unknown
ParticipantObjectTypeCode	M	System ⇒ ‘2’
ParticipantObjectTypeCodeRole	M	Report ⇒ ‘3’
ParticipantObjectIDTypeCode	M	EV (110180, DCM, ‘Study Instance UID’)
ParticipantObjectDetail	U	All cases ⇒ ‘Base-64 encoded study date if Study has StudyDate(0008,0020) attribute’ Update study / series expiration date ⇒ ‘Base-64 encoded expiration date (7777,1023)’
ParticipantObjectDescription	U
SOPClass	MC	Rejection / Deletion case ⇒ Sop Class UID and Number of instances with this sop class. eg. <SOPClass UID=‘1.2.840.10008.5.1.4.1.1.88.22’ NumberOfInstances=‘4’/>
Accession	U	Accession Number

Table 7.33 Participant Object Identification : Patient¶
Field Name	Opt	Description
ParticipantObjectID	M	Patient ID or <none> if unknown
ParticipantObjectTypeCode	M	Person ⇒ ‘1’
ParticipantObjectTypeCodeRole	M	Patient ⇒ ‘1’
ParticipantObjectIDTypeCode	M	EV (2, RFC-3881, ‘Patient Number’)
ParticipantObjectName	U	Patient Name

7.1.5.1.1.6.3. Sample Message¶

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AuditMessage xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://www.dcm4che.org/DICOM/audit-message.rnc">

    <EventIdentification EventActionCode="D" EventDateTime="2017-07-17T11:24:42.320+02:00" EventOutcomeIndicator="0">
        <EventID csd-code="110103" codeSystemName="DCM" originalText="DICOM Instances Accessed"/>
        <EventOutcomeDescription>Data Retention Policy Expired</EventOutcomeDescription>
    </EventIdentification>

    <ActiveParticipant UserID="127.0.0.1" UserIsRequestor="true" UserTypeCode="1" NetworkAccessPointID="127.0.0.1" NetworkAccessPointTypeCode="2">
        <UserIDTypeCode csd-code="110182" codeSystemName="DCM" originalText="Node ID"/>
    </ActiveParticipant>

    <ActiveParticipant UserID="/dcm4chee-arc/aets/DCM4CHEE/rs/studies/1.2.392.200036.9125.0.199402091242.1/series/1.2.392.200036.9125.0.199402091242.1/reject/113039%5EDCM"
       AlternativeUserID="2716" UserIsRequestor="false" NetworkAccessPointID="localhost" UserTypeCode="2" NetworkAccessPointTypeCode="1">
        <UserIDTypeCode csd-code="12" codeSystemName="RFC-3881" originalText="URI"/>
    </ActiveParticipant>

    <AuditSourceIdentification AuditSourceID="dcm4chee-arc">
        <AuditSourceTypeCode csd-code="4"/>
    </AuditSourceIdentification>

    <ParticipantObjectIdentification ParticipantObjectID="1.2.392.200036.9125.0.199402091242.1"
        ParticipantObjectTypeCode="2" ParticipantObjectTypeCodeRole="3">
        <ParticipantObjectIDTypeCode csd-code="110180" originalText="Study Instance UID" codeSystemName="DCM"/>
        <ParticipantObjectDescription>
            <SOPClass UID="1.2.840.10008.5.1.4.1.1.1" NumberOfInstances="1"/>
        </ParticipantObjectDescription>
    </ParticipantObjectIdentification>

    <ParticipantObjectIdentification ParticipantObjectID="P5^^^ISSUER" ParticipantObjectTypeCode="1" ParticipantObjectTypeCodeRole="1">
        <ParticipantObjectIDTypeCode csd-code="2" originalText="Patient Number" codeSystemName="RFC-3881"/>
        <ParticipantObjectName>TEST^Name</ParticipantObjectName>
    </ParticipantObjectIdentification>

</AuditMessage>