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CP-1103 Date: 2011/08/15

Page: Status: Final Text



DICOM Correction Item

Correction Number CP-1103

Log Summary: Pixel Intensity Relationship LUT Number of Items

Type of Modification

Modification
Name of Standard

PS 3.3-2011

Rationale for Correction:

The wording of the number of required Items in Pixel Intensity Relationship LUT Sequence (0028,9422) is confusing.

Current wording:

At least one item with LUT Function (0028,9474) equals TO_LINEAR LUT shall be present if Pixel Intensity Relationship (0028,1040) equals LOG;

Only a single item with LUT Function (0028,9474) equals TO_LINEAR LUT shall be present.

Proposed wording:

If Pixel Intensity Relationship (0028,1040) value equals LOG, exactly one item with LUT Function (0028,9474) value TO_LINEAR shall be present; other Items with other values of LUT Function (0028,9474) may be present.


Sections of documents affected

PS 3.3 Section C.7.6.16.2.13

Correction Wording:

Table C.7.6.16-14


PIXEL INTENSITY RELATIONSHIP LUT MACRO ATTRIBUTES

Attribute Name

Tag

Type

Attribute Description

Pixel Intensity Relationship LUT Sequence

(0028,9422)

1

Defines a sequence of Pixel Intensity Relationship LUTs.

One or more items shall be present in this sequence.



If Pixel Intensity Relationship (0028,1040) value equals LOG, At least exactly one item with LUT Function (0028,9474) value equals TO_LINEAR LUT shall be present if Pixel Intensity Relationship (0028,1040) equals LOG; other Items with other values of LUT Function (0028,9474) may be present.

Only a single item with LUT Function (0028,9474) equals TO_LINEAR LUT shall be present.

>LUT Descriptor

(0028,3002)

1

Specifies the format of the LUT Data in this Sequence.

See C.11.1.1 and C.7.6.16.2.13.1 for further explanation.

>LUT Data

(0028,3006)

1

LUT Data in this Sequence.

>LUT Function

(0028,9474)

1

The transformation function this LUT applies to the stored pixel values.

Defined Terms:



TO_LOG

TO_LINEAR

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