Radiology Participant Workshop, Oct Notification Options for Scheduled Workflow Departmental Appointment Notification Availability of PPS-Referenced Instances Paul Seifert IHE Radiology Technical Committee Co-Chair, Agfa HealthCare

Departmental Appointment Notification Option

Radiology Participant Workshop, Oct Departmental Appointment Notification Option for Department System Scheduler/ Order Filler to notify Order Placer of date/ time of scheduled examinations

Radiology Participant Workshop, Oct Departmental Appointment Notification Three typical use cases –New booking: initial scheduling of an examination –Re-schedule: change in date/time of examination –Cancellation: cancellation of examination Mechanism – HL7 SIU messages (S12, S13, S15) – One message may convey multiple appointments corresponding to a single order – One appointment corresponds to one or more Scheduled Procedure Steps

Radiology Participant Workshop, Oct SIU Message Details: SCH, RGS Segments Specifies common information for one or more appointments associated with single order – One Group (RGS, AIS segments) per appointment booking – One message can have multiple resource groups, thus multiple appointments (procedure steps) Appointment timing is defined on the Resource Group level, per Scheduled Procedure Step – SCH-6 has fixed value of: ^APT – SCH-11 has a fixed value of: 1 No patient identification information is required, thus Order Numbers are required – Placer Order #, Filler Order #

Radiology Participant Workshop, Oct SIU Message Details: AIS Segment Specifies Procedure Code and Description for the Scheduled Procedure Step(s) included in AIS-3 – Requested Procedure Code in components 1-3 – Scheduled Procedure Steps are identified by the text in component 5 Date/Time of an appointment is expected to be in ‘Start Date/Time’ element (AIS-4) – If local time, UTC offset is required – Example AIS segment with UTC offset: AIS|1234|A|97020^Head CT w/o contrast^C4^^SPS Description| ||||||||| Pending Change Proposal to correct current specification in Supplement No specification of location or resources

Radiology Participant Workshop, Oct What is not in the option Departmental Appointment Notification Option does not allow Order Placer to request re-scheduling – it only can do it by cancel and re-order Transaction does not require AIL segment – thus notifications on re-scheduling of the service from one location to another may not be sent This option does not address needs of enterprise-wide scheduling

Availability of PPS-Referenced Instances Option

Radiology Participant Workshop, Oct Availability of PPS-Referenced Instances Option for Image Manager to notify Order Filler and other workflow management actors of availability status of evidence objects

Radiology Participant Workshop, Oct Availability of PPS-Referenced Instances Image Manager/Image Archive sends an Instance Availability Notification message to the DSS/Order Filler – Optionally to other workflow managing actors (Post- Processing Manager, Report Manager). DSS/Order Filler, Post-Processing Manager, Report Manager receive an Instance Availability Notification message and internally process it. Notification Option is preferred alternative to Query Option for indicating Instance Availability in SWF Based on recently approved Instance Availability Notification SOP (DICOM 2004) – N-CREATE Service

Radiology Participant Workshop, Oct IHE Usage Requirements: Trigger Events Image Manager shall send only one IAN message for each MPPS referencing at least one evidence object. Image Manager shall send IAN when it has received ALL instances referenced in MPPS – No message shall be sent if complete object set never arrives – No message shall be sent referencing objects without a corresponding MPPS Image Manager shall send IAN to DSS/OF, and optionally to other actors

Radiology Participant Workshop, Oct IHE Usage Requirements: Message Semantics/ Expected Actions Timing of a message can vary significantly depending on timing of MPPS and object storage Even when objects are included in IAN, the retrieval request may fail due to errors Actors receiving IAN message are expected to use its content for workflow management.