Dataset
Feature Type Name
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).
- From File Name(s) – Generates one feature type per source filename.
Advanced
Read Private Tags
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 (default) – Private tags will be ignored.
- Yes – FME will read private tags as attributes.
Read Sequence Tags
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 (default) – FME will read sequences of tags as attributes.
- No – Sequences of tags will be ignored.
Tag Naming Method
Specifies whether tags are named by keywords or hexadecimal numbers.
Schema Attributes
Additional Attributes to Expose
Use this parameter to expose Format Attributes in FME 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, this parameter allows you to expose additional attributes on multiple feature types. Click the browse button to view the available format attributes (which are different for each format) for the reader.
Use Search Envelope
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A search envelope (also known as a bounding box) is a rectangular area that defines a geographic area. In FME, the easiest way to define a search envelope is to use search envelope parameters. Defining a search envelope is the most efficient method of selecting an area of interest because FME will read only the data that is necessary – it does not have to read an entire dataset. Search Envelope parameters apply to both vector and raster datasets and can be particularly efficient if the source format has a spatial index. Most FME readers have parameters to define the search envelope of data that is being read:
The parameters include the x and y coordinates of the bounding box as well as a parameter that defines the coordinate system. How to Define the Bounding Box 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. Note that the bounding box intersection is not a full geometry intersection (based on spatial relationships) that would be returned by a transformer like the SpatialFilter. Note If all four coordinates of the search envelope are left at 0, the search envelope will be disabled even if this option is checked.
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Search Envelope Coordinate System |
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. |
