Source Image Sequence Attribute
| Tag | (0008,2112) |
|---|---|
| Type | Required (1) |
| Keyword | SourceImageSequence |
| Value Multiplicity | 1 |
| Value Representation | Sequence (SQ) |
The Image SOP Class/Instance pair of the Image that was used to generate this corneal topography map.
Note
Attribute Corneal Vertex Location (0046,0202) in this corneal topography map has been generated by the source image and provides the registration of the Corneal Topography Map to the Source Image.
See Section C.8.30.3.1.2 for further explanation.
Only a single Item shall be included in this Sequence.
Section C.8.30.3.1.2
C.8.30.3.1.2 Source Image Sequence
Equipment generating a corneal topography map image first obtains a source image. This image may be single-frame or multi-frame such as when the Attribute Ophthalmic Mapping Device Type (0022,1415) is SLIT_BASED or INTERFEROMETRY. From this source image, the necessary measurement data is obtained to build the corneal topography map.
A typical source image may be generated by the Ophthalmic Photography 8 bit or 16 bit SOP Classes for device types of REFLECTION and SLIT_BASED. A typical source image for device type of INTERFEROMETRY would be Ophthalmic Tomography Image SOP Class.
Figure C.8.30.3.1-2 illustrates an example where the source image (left) is generated using a device type of REFLECTION. The corneal topography map and color scale is shown in the center (this is the output of this SOP Class). The right figure shows an example of the corneal topography map and color scale superimposed on the source image.
Figure C.8.30.3.1-2. Source Image (left), Corneal Topography Map Image (Center), Corneal Topography Map Presented as an Overlay on the Source Image (right)