This section describes in detail how to create a segmentation for a given DICOM sample dataset and save it in combination with automatically created volumetric measurements into the DICOM file format. The resulting data will be stored in the Slicer DICOM database and is therefore centrally accessible for later reading on this computer.
In this section you will learn how to create a DICOM Structured Report which will include a DICOM Segmentation and volumetric measurements.
Important! In order to have the following
Test Areadisplayed, Slicer
Developer Modeneeds to be enabled in your Slicer application settings.
First of all you will need to download a DICOM sample dataset.
By using the button shown above the following tasks will be accomplished for you:
- 1.Download the DICOM sample dataset
- 2.Unpack and import it into 3D Slicer
- 3.Initiate the creation of a new measurement table which references the downloaded DICOM sample dataset
- 4.Display the DICOM sample dataset in your current slice view layout
In this section we will be segmenting ventricles of the human brain.
Once the DICOM sample dataset (or whichever dataset you would like to load into 3D Slicer) has been loaded into
QuantitativeReportingyou can add a segment by pushing the "Add segment" button as shown below.
Note: Initially each segment gets the terminology category and type "Tissue" assigned.
By hovering over the segments color icon a tooltip will appear which gives you more information about the terminology which is currently assigned to this segment.
TIP: You can make better use of the whole screen by switching to the Four-Up Table Layout as shown below. Doing so the measurements table will appear below the viewers instead of having it inside the module GUI panel.
In order to make a segmentation more specific you can select another terminology by double clicking onto the color icon of the segment. This is shown in the previously displayed picture. The following screenshot shows the terminology selection widget. Select for category "Anatomical Structure" and after that type "Brain" into the search mask of the "Property type". Choose "Brain ventricle" from the proposed list.
In order to make segmentation easier for you, you can select the
Threshold Effectas displayed below.
Threshold Effectcan be used for specifying a range of valid grayscale values that can be used for painting. After you are done selecting the right range for your needs you can select the button "Use For Paint" and it will automatically switch to the
Now go ahead and paint the along the ventricle of the brain. You will notice, that the thresholded paint will help you a lot going through the slices.
Once you are done with creating a segmentation and you want to save the measurements result as DICOM push one the button "Save Report":
"Save Report": Will create the partially completed DICOM Structured Report which could be continued at a later time (work in progress)
"Complete Report": Will create the completed DICOM Structured Report representing the final version which usually wouldn't be modified afterwards.
This section will show you how to load a DICOM Structured Report from the Slicer DICOM database and how to load and display the results with
- 1.Open Slicer DICOM browser
- 2.Select the structured report that you want to load (modality:SR)
- 3.Select "Load" for loading the structured report into Slicer
- 4.Switch to module
- 5.Select measurement report from dropdown: In case that you freshly restarted Slicer, you will just need to select the only available table from there. Otherwise select the last one.
With completing the previously shown steps,
QuantitativeReportingshould be ready to display the results.
In case that you want to use your own DICOM imaging series in this tutorial, you will first need to manually import it into 3D Slicer DICOM database, load it and create a new measurement report in
QuantitativeReporting. Once the DICOM dataset has been imported to 3D Slicer the other steps won't take much time.
add screenshot here of importing into Slicer