Impact in large number of coercion rules

[albertosaez]

In my scenario, I have a large number of modalities, and for most of them I need to configure 2 coercion: one for the queries to the worklist and other for the storage.

This would mean the definition of > 400 coercion rules. Does this have an impact in the system performance ?

The coercion for the worklist is for adding a filter based on aetitle, and the ones for the storage are for setting Institution and department.

[gunterze]

Why do you think you need individual coercion rules for each modality?

You just need one rule with Use Calling AE Title as: ScheduledStationAETitle to set Scheduled Station AE Title (0040,0001) in item of Scheduled Procedure Step Sequence (0040,0100) of C-FIND RQs from all modalities to the Calling AE Title they used to initiate the Association.

And you need only one rule by different value for Institutional Department Name (0008,1040) you want to supplement in receiving C-STORE RQs, selected by Condition: SendingApplicationEntityTitle=MOD1|MOD2|MOD3 or by configuring individual Archive AEs for each different Department (e.g. with AE Titles: 4DEPT1, 4DEPT2, ...) and configuring the rule on Archive Network AE level - which would also allow to configure different

Name	Type	Description (LDAP Attribute)
Store Access Control ID	string	Access Control ID assigned to Studies received by this AE (dcmStoreAccessControlID)

if not every client shall have access to all studies independently from its source. s. Access control based on Archive AEs

Supplementing can be either configured directly by Archive Attribute Coercion Attribute

Name	Type	Description (LDAP Attribute)
Merge Attribute(s)	string	Merge DICOM Attribute in format {attributeID}={value}. {attributeID} inside of {value} will be replaced by the value of that attribute in the original dataset. Example: InstitutionName=RegionalHospital or 00081040=XRay. (dcmMergeAttribute)

or by referring another Device (e.g. dept1, dept2, ...) by

Name	Type	Description (LDAP Attribute)
Supplement from Device	string	Name of Device from which Assigning Authorities and other information is taken to supplement received Composite Objects and MPPS. (dcmSupplementFromDeviceName)

with configured Device Attributes

Name	Type	Description (LDAP Attribute)
Institution Name(s)	string	Should be the same as the value of Institution Name (0008,0080) in SOP Instances created by this device (dicomInstitutionName)
Institution Department Name(s)	string	Should be the same as the value of Institutional Department Name (0008,1040) in SOP Instances created by this device (dicomInstitutionDepartmentName)

s.o. Supplement received MPPS and DICOM Objects with Attributes

Anyway, I also guess, that iterating through >400 coercion rules should not significantly harm performance.