DICOM PS3.3 2020d - Information Object Definitions

C.8.15.3.10 CT Pixel Value Transformation Macro (Current)
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##### C.8.15.3.10 CT Pixel Value Transformation Macro

Table C.8-126 specifies the Attributes of the CT Pixel Value Transformation Functional Group Macro.

### Note

1. This Macro is equivalent to the Modality LUT transformation in non Multi-frame IODs.

2. This in effect specializes the Section C.7.6.16.2.9 Pixel Value Transformation Macro.

Table C.8-126. CT Pixel Value Transformation Macro Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Pixel Value Transformation Sequence | (0028,9145) | 1 | Contains the Attributes involved in the transformation of stored pixel values. Only a single Item shall be included in this Sequence.
>Rescale Intercept | (0028,1052) | 1 | The value b in relationship between stored values (SV) and the output units. Output units = m*SV + b.
>Rescale Slope | (0028,1053) | 1 | m in the equation specified by Rescale Intercept (0028,1052).
>Rescale Type | (0028,1054) | 1 | Specifies the output units of Rescale Slope (0028,1053) and Rescale Intercept (0028,1052). See Section C.11.1.1.2 for further explanation. If Frame Type (0008,9007) Value 1 of this frame is ORIGINAL and Frame Type (0008,9007) Value 3 is not LOCALIZER, the value shall be HU (Hounsfield Units).

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DICOM PS3.3 2020d - Information Object Definitions