DICOM (Digital Imaging and Communications in Medicine) Reader Parameters

This parameter allows you to choose different naming schemes, and the number of feature types generated for the reader.

Feature type name choices:

• From Format Name: Produces only a single feature type containing the format name.
• From Patient Name(s): Produces one feature type per patient in the dataset. Preferentially uses the Patient’s Name tag (0010,0010) and falls back to Patient ID (0010,0020).
• From Study Description(s): Produces one feature type per study in the dataset. Preferentially uses the Study Description tag (0008,1030) and falls back to Study ID (0020,0010).
• From Series Description(s): Produces one feature type per series in the dataset. Preferentially uses the Series Description tag (0008,103E) and falls back to Modality (0008,0060), and Series Number (0020,0011).

Private tags are added to DICOM files by the machine that generated the imagery, and their exact definition is not part of the DICOM standard.

• No: This is the default. Private tags will be ignored.
• Yes: FME will read private tags as attributes.

Sequences are sets of nested tags within a top-level tag. For example, a Performed Protocol Code Sequence can contain many tags:

PerformedProtocolCodeSequence.CodeMeaning

PerformedProtocolCodeSequence.CodeValue

PerformedProtocolCodeSequence.CodingSchemeDesignator

PerformedProtocolCodeSequence.ContextGroupExtensionFlag

• Yes: This is the default. FME will read sequences of tags as attributes.
• No: Sequences of tags will be ignored.

Use this parameter to expose Format Attributes in Workbench when you create a workspace:

• In a dynamic scenario, it means these attributes can be passed to the output dataset at runtime.
• In a non-dynamic scenario, you can use this parameter to expose additional attributes on multiple feature types.

Using the minimum and maximum x and y parameters, define a bounding box that will be used to filter the input features. Only features that intersect with the bounding box are returned.

If all four coordinates of the search envelope are specified as 0, the search envelope will be disabled.

Specifies the coordinate system of the search envelope if it is different than the coordinate system of the data. The coordinate system associated with the data to be read must always be set if this parameter is set.

If this parameter is set, the minimum and maximum points of the search envelope are reprojected from the Search Envelope Coordinate System to the reader’s coordinate system prior to applying the envelope.

When selected, this parameter removes any portions of imported features being read that are outside the Search Envelope.

The example below illustrates the results of the Search Envelope when Clip to Search Envelope is not selected (set to No) and when it is selected (set to Yes).

• No: Any features that cross the search envelope boundary will be read, including the portion that lies outside of the boundary.
• Yes: Any features that cross the search envelope boundary will be clipped at the boundary, and only the portion that lies inside the boundary will be read. The underlying function for the Clip to Search Envelope function is an intersection; however, when Clip to Search Envelope is selected, a clipping operation is also performed in addition to the intersection.