# How does the WorkList server knows that the modality have operated the medical Image checking?

**URL:** https://discourse.orthanc-server.org/t/how-does-the-worklist-server-knows-that-the-modality-have-operated-the-medical-image-checking/3548
**Category:** General
**Created:** [May 26, 2023, 6:01am UTC](https://discourse.orthanc-server.org/t/how-does-the-worklist-server-knows-that-the-modality-have-operated-the-medical-image-checking/3548 "2023-05-26T06:01:30Z")
**Posts on this page:** 1
**Showing post:** 10

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### Author: ![sdscotti](https://discourse.orthanc-server.org/user_avatar/discourse.orthanc-server.org/sdscotti/32/2563_2.png) [@sdscotti](https://discourse.orthanc-server.org/u/sdscotti)
#### Post date: [June 4, 2023, 9:49am UTC](https://discourse.orthanc-server.org/t/how-does-the-worklist-server-knows-that-the-modality-have-operated-the-medical-image-checking/3548/10 "2023-06-04T09:49:20Z")

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Regarding MPPS:

> [@MPPS](https://discourse.orthanc-server.org/t/mpps/2260/2):
>
> Orthanc can receive/store/send DICOM instances that come with MPPS-related DICOM tags inside their datasets. However, as of Orthanc 1.8.2, the Orthanc SCP does not implement the N-CREATE and N-SET commands to create/update MPPS in the worklists. Such features could be implemented with financial support from the industry.

> [@Orthanc MPPS](https://discourse.orthanc-server.org/t/orthanc-mpps/2470):
>
> Hello, I’m working on implementing Modality Performed Procedure Steps in a stack that uses Orthanc on AWS. I found this question from 2014 and wanted to ask if it was still valid? Does Orthanc support MPPS? [https://groups.google.com/g/orthanc-users/c/X1mvg4bF8mY](https://groups.google.com/g/orthanc-users/c/X1mvg4bF8mY) Thanks, Dylan S.

That would be a nice addition.

/sds

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