Материал: part17

Received, 2. Cassette​ Summary, 3. Number​ of Pieces in Block, 4.​ Staining. This does not​ alwaysworkthisnicely.​ Often one or more of​ fields is empty or​ confusing.​

Note​

This field is​ limited to 64​ characters​

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The example Specimen Preparation Sequence first describes the most recent processing of the slide (staining), then goes back to​ show its provenance. Notice that there is no sampling process for the slide described here; the LIS did not record the step of slicing​ of blocks into slides.​

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NN.7 Specimen Data in Pathology Imaging Workflow Management​

Workflow management in the DICOM imaging environment utilizes the Modality Worklist (MWL) and Modality Performed Procedure​ Step(MPPS)services.Withinthepathologydepartment,theseservicessupportbothhumancontrolledimaging(e.g.,grossspecimen​ photography), as well as automated slide scanning modalities.​

While this section provides an overview of the DICOM services for managing workflow, the reader is referred to the IHE Anatomic​ Pathology Domain Technical Framework for specific use cases and profiles for pathology imaging workflow management.​

NN.7.1 Modality Worklist​

The contents of the Specimen Module may be conveyed in the Scheduled Specimen Sequence of the Modality Worklist query. This​ feature allows an imaging system (Modality Worklist SCU) to query for work items by Container ID. The worklist server (SCP) of the​ laboratory information system can then return all the necessary information for creating a DICOM specimen-related image. This in-​ formation includes patient identity and the complete slide processing history (including stain applied). It may be used for imaging set-​ up and/or inclusion in the Image SOP Instance.​

NN.7.1.1 MWL for Whole Slide Imaging​

In addition to the Specimen Module Attributes, the set up of an automated whole slide scanner requires the acquisition parameters​ such as scan resolution, number of Z-planes, fluorescence wavelengths, etc. A managed set of such parameters is called a Protocol​ (see PS3.3), and the MWL response may contain a Protocol Code to control scanning set up. Additional set-up parameters can be​ passedasContentItemsintheassociatedProtocolContextSequence;thismightbeimportantwhenthereadingpathologistrequests​ a rescan of the slide with slightly different settings.​

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NN.7.2 Modality Performed Procedure Step​

When scanning is initiated, the scanner reports the procedure step in a Modality Performed Procedure Step (MPPS) transaction.​

Upon completion (or cancellation) of an image acquisition, the modality reports the work completed in an update to the MPPS. The​ MPPScanconveyboththeContainerIDandtheimageUIDs,sothattheworkflowmanager(laboratoryinformationsystem)isadvised​ of the image UIDs associated with each imaged specimen.​

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