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(0008,9205) Pixel Presentation1Code String
(0028,2000) ICC Profile1COther Byte String
(0028,2002) Color Space1CCode String
(0070,1801) Presentation State Classification Component Sequence2CSequence
(0028,1101) Red Palette Color Lookup Table Descriptor1CUS or SS
(0028,1102) Green Palette Color Lookup Table Descriptor1CUS or SS
(0028,1103) Blue Palette Color Lookup Table Descriptor1CUS or SS
(0028,1104) Alpha Palette Color Lookup Table Descriptor1CUnsigned Short
(0028,1199) Palette Color Lookup Table UID3Unique Identifier
(0028,1201) Red Palette Color Lookup Table Data1COther Word String
(0028,1202) Green Palette Color Lookup Table Data1COther Word String
(0028,1203) Blue Palette Color Lookup Table Data1COther Word String
(0028,1204) Alpha Palette Color Lookup Table Data1COther Word String
(0028,1221) Segmented Red Palette Color Lookup Table Data1COther Word String
(0028,1222) Segmented Green Palette Color Lookup Table Data1COther Word String
(0028,1223) Segmented Blue Palette Color Lookup Table Data1COther Word String
(0028,1224) Segmented Alpha Palette Color Lookup Table Data1COther Word String
(0028,140F) RGB LUT Transfer Function1Code String
(0028,1410) Alpha LUT Transfer Function1CCode String
(0070,1802) Component Type1Code String
(0070,1803) Component Input Sequence1Sequence
(0070,1805) Presentation State Compositor Component Sequence2CSequence
(2050,0020) Presentation LUT Shape1CCode String
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Data synced with official DICOM standard on 12 May 2020. The DICOM Standard is under continuous maintenance, and the current official version is available at http://www.dicomstandard.org/current/. DICOM Parts 3, 4, and 6, © NEMA. Please note that the most recent PDF version of the standard is the official reference, and should checked when making technical decisions.

Blue Palette Color Lookup Table Data Attribute

Tag(0028,1203)
TypeConditionally Required (1C)
KeywordBluePaletteColorLookupTableData
Value Multiplicity1
Value RepresentationOther Word String (OW)

Blue Palette Color Lookup Table Data.

See Section C.7.6.3.1.5.

Required if Red Palette Color Lookup Table Data (0028,1201) is present.

Section C.7.6.3.1.5

C.7.6.3.1.5 Palette Color Lookup Table Descriptor

The three values of Palette Color Lookup Table Descriptor (0028,1101-1104) describe the format of the Lookup Table Data in the corresponding Data Element (0028,1201-1204) or (0028,1221-1223). In this section, the term "input value" is either the Palette Color Lookup Table input value described in the Enhanced Palette Color Lookup Table Sequence (0028,140B) or if that Attribute is absent, the stored pixel value.

The first Palette Color Lookup Table Descriptor value is the number of entries in the lookup table. When the number of table entries is equal to 216 then this value shall be 0. The first value shall be identical for each of the Red, Green, Blue and Alpha Palette Color Lookup Table Descriptors.

The second Palette Color Lookup Table Descriptor value is the first input value mapped. This input value is mapped to the first entry in the Lookup Table Data. All input values less than the first value mapped are also mapped to the first entry in the Lookup Table Data if the Photometric Interpretation is PALETTE COLOR.

Note

In the case of the Supplemental Palette Color LUT, the stored pixel values less than the second descriptor value are grayscale values.

An input value one greater than the first value mapped is mapped to the second entry in the Lookup Table Data. Subsequent input values are mapped to the subsequent entries in the Lookup Table Data up to an input value equal to number of entries + first value mapped - 1, which is mapped to the last entry in the Lookup Table Data. Input values greater than or equal to number of entries + first value mapped are also mapped to the last entry in the Lookup Table Data. The second value shall be identical for each of the Red, Green, Blue and Alpha Palette Color Lookup Table Descriptors.

The third Palette Color Lookup Table Descriptor value specifies the number of bits for each entry in the Lookup Table Data. It shall take the value of 8 or 16. The LUT Data shall be stored in a format equivalent to 8 bits allocated when the number of bits for each entry is 8, and 16 bits allocated when the number of bits for each entry is 16, where in both cases the high bit is equal to bits allocated-1. The third value shall be identical for each of the Red, Green and Blue Palette Color Lookup Table Descriptors.

Note

Some implementations have encoded 8 bit entries with 16 bits allocated, padding the high bits; this can be detected by comparing the number of entries specified in the LUT Descriptor with the actual value length of the LUT Data entry. The value length in bytes should equal the number of entries if bits allocated is 8, and be twice as long if bits allocated is 16.

When the Red, Green, or Blue Palette Color Lookup Table Descriptor (0028,1101-1103) are used as part of the Palette Color Lookup Table Module or the Supplemental Palette Color Lookup Table Module in an Image or Presentation State IOD, the third value shall be equal to 16. When the Alpha Palette Color Lookup Table Descriptor (0028,1104) is used, the third value shall be equal to 8.

When the Red, Green, or Blue Palette Color Lookup Table Descriptor (0028,1101-1103) are used as part of the Palette Color Lookup Table Module in a Color Palette IOD, the 3rd value of Palette Color Lookup Table Descriptor (0028,1101-1103) (i.e, the number of bits for each entry in the Lookup Table Data) shall be 8.

Note

  1. A value of 16 indicates the Lookup Table Data will range from (0,0,0) minimum intensity to (65535,65535,65535) maximum intensity.

  2. Since the Palette Color Lookup Table Descriptor (0028,1101-1104) Attributes are multi-valued, in an Explicit VR Transfer Syntax, only one value representation (US or SS) may be specified, even though the first and third values are always by definition interpreted as unsigned. The explicit VR actually used is dictated by the VR needed to represent the second value, which will be consistent with Pixel Representation (0028,0103).