Source Instance Sequence Attribute
| Tag | (0042,0013) |
|---|---|
| Type | Optional (3) |
| Keyword | SourceInstanceSequence |
| Value Multiplicity | 1 |
| Value Representation | Sequence (SQ) |
The set of non-image composite SOP Instances that were used to derive this Instance.
One or more Items are permitted in this Sequence.
See Section C.12.4.1.2 for further explanation.
Section C.12.4.1.2
C.12.4.1.2 Source Image Sequence
If an Image is identified to be a Derived Image (see Section C.7.6.1.1.2 “Image Type”), Source Image Sequence (0008,2112) is an optional list of source images used to create the Derived image. Source Instance Sequence (0042,0013) is an optional list of non-image source Instances that were used to create this Instance. Source Image Sequence (0008,2112) and/or Source Instance Sequence (0042,0013) may be used whether or not there is a description of the way the Instance was derived in Derivation Description (0008,2111) or Derivation Code Sequence (0008,9215).
Images shall not be referenced by Source Instance Sequence (0042,0013).
Note
Multiple Items may be present within Source Image Sequence (0008,2112) and/or Source Instance Sequence (0042,0013), in which case either:
-
those Instance were combined to make the derived Instance (e.g., multiple source images to make an MPR or MIP), or
-
each of the Items represents a step in the successive derivation of an Instance (e.g., when an image has had successive lossy compression steps applied to it),
-
some combination of the above.
The Purpose of Reference Code Sequence (0040,A170) and the Attributes within the referenced Instances themselves may be used to determine the history of the derivation, which is not otherwise explicitly specified.