H.4.9.2.1 N-CREATE

The N-CREATE Service Element is used to create an instance of the Presentation LUT SOP Class.

H.4.9.2.1.1 Attributes

The Attribute list of the N-CREATE Service Element is defined as shown in Table H.4-23.

Table H.4-23N-CREATE ATTRIBUTE LIST

Attribute name Tag Usage SCU/SCP
Presentation LUT Sequence (2050,0010) MC/M (Required if Presentation LUT Shape (2050,0020) is not present. Not allowed otherwise.)
>LUT Descriptor (0028,3002) MC/M (Required if sequence is present. The first value (number of entries in the LUT) shall be equal to 256 if Bits Stored = 8 4096 if Bits Stored = 12. The second value shall be equal to 0. The third value (number of bits for each LUT entry) shall be 10-16.) See the definition is PS 3.3 for further explanation.
>LUT Explanation (0028,3003) U/U
>LUT Data (0028,3006) MC/M (Required if sequence is present)
Presentation LUT Shape (2050,0020) MC/M (Required if Presentation LUT Sequence (2050,0010) is not present. Not allowed otherwise.) SCPs shall support the Enumerated Values IDENTITY and LIN OD

H.4.9.2.1.2 Status

The status values which are specific for this SOP Class are defined as follows:

Status Meaning Code
Success Presentation LUT successfully created 0000
Warning Requested Min Density or Max Density outside of printer’s operating range. The printer will use its respective minimum or maximum density value instead. B605

H.4.9.2.1.3 Behavior

The SCU uses the N-CREATE Service Element to request the SCP to create a Presentation LUT SOP Instance. The SCU shall initialize Attributes of the SOP Class as specified in section H.2.4.

The SCU shall create the Presentation LUT prior to referencing it from the Film Box or the Image Box.

The Presentation LUT persists in the SCP as long as the Association in which it was created is open or an explicit N-DELETE is issued by the SCU.

The SCP shall return the status code of the requested SOP Instance creation. The meaning of success, warning, and failure status codes is defined in Section H.2.5.

The SCP shall use the Grayscale Standard Display Function as specified in PS 3.14 to convert the output of the Presentation LUT to density for printing. If the SCU specifies values for Illumination (2010,015E) and/or Reflected Ambient Light (2010,0160), these values shall be used instead of the default or configured values of the SCP. If these values are not supplied, the SCP shall use its default or configured values. (See H.4.2.2.1.1 for suggested defaults).