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Illustration 6.8.3-1 – Modality Worklist Information Model E/R DIAGRAM
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6.8.4 Entity Descriptions
Please refer to DICOM Standard PS 3.3. (Information Object Definitions) and PS 3.4 (Service
Class Specifications) for a description of each of the Entities contained within the Modality
Worklist Information Model.
6.8.4.1 Scheduled Procedure Step
A Scheduled Procedure Step is an arbitrarily defined scheduled unit of service that is specified
by the Procedure Plan for a Requested Procedure. It specifies one or more Action Items
(events) involving equipment (i.e. imaging modality equipment), human resources, location and
time (i.e. start time, stop time, duration).
6.8.4.2 Requested Procedure Entity Description
A Requested Procedure is an instance of a Procedure of a given Procedure Type. An instance
of a Requested Procedure includes all of the items of information that are specified by an
instance of a Procedure Plan that is selected for the Requested Procedure by the imaging
service provider.
6.8.4.3 Imaging Service Request Entity Description
An Imaging Service Request is a set of one or more Requested Procedures selected from a list
of Procedure Types. An Imaging Service Request is submitted by one authorized imaging
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