Blue Palette Color Lookup Table Data Attribute
| Tag | (0028,1203) |
|---|---|
| Type | Conditionally Required (1C) |
| Keyword | BluePaletteColorLookupTableData |
| Value Multiplicity | 1 |
| Value Representation | Other Word String (OW) |
Blue Palette Color Lookup Table Data. Required if segmented data is NOT used in an Image IOD or Color Palette IOD, or if the IOD is a Presentation State IOD. See Section C.7.6.3.1.6 for further explanation.
Color Palette IOD
A.58 Color Palette IOD
A.58.1 Color Palette IOD Description
A Color Palette entity specifies a color palette suitable for application to a grayscale image or parametric map.
A.58.2 Color Palette IOD Entity-Relationship Model
A Color Palette is not related to other Information Entities of the DICOM real-world model, as it is not associated with a specific Patient. The E-R model for the Color Palette IOD is shown in Figure A.58.2-1.
Figure A.58.2-1. Color Palette IOD E-R Model
A.58.3 Color Palette IOD Module Table
Table A.58.3-1 lists the Modules that make up the Color Palette IOD.
Table A.58.3-1. Color Palette IOD Modules
Note
The number of bits for each entry in the Lookup Table Data is constrained in the Palette Color Lookup Table Module to be 8 in this IOD.
Section C.7.6.3.1.6
C.7.6.3.1.6 Palette Color Lookup Table Data
Palette Color Lookup Table Data (0028,1201-1204) contain the lookup table data corresponding to the Lookup Table Descriptor (0028,1101-1104).
Palette color values must always be scaled across the full range of available intensities. This is indicated by the fact that there are no bits stored and high bit values for palette color data.
Note
For example, if there are 16 bits per entry specified and only 8 bits of value are truly used then the 8 bit intensities from 0 to 255 must be scaled to the corresponding 16 bit intensities from 0 to 65535. To do this for 8 bit values, simply replicate the value in both the most and least significant bytes.
These lookup tables shall be used only when there is a single sample per pixel (single image plane) in the image.