C.8.12.6 Whole Slide Microscopy Functional Group Macros
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#### C.8.12.6 Whole Slide Microscopy Functional Group Macros

The following sections contain Functional Group Macros specific to the VL Whole Slide Microscopy Image IOD.

### Note

The attribute descriptions in the Functional Group Macros are written as if they were applicable to a single frame (i.e., the macro is part of the Per-frame Functional Groups Sequence). If an attribute is applicable to all frames (i.e., the macro is part of the Shared Functional Groups Sequence) the phrase "this frame" in the attribute description shall be interpreted to mean "for all frames".

##### C.8.12.6.1 Plane Position (Slide) Macro

Table C.8.12.6.1-1 specifies the attributes of the Plane Position (Slide) Functional Group Macro.

Table C.8.12.6.1-1. Plane Position (Slide) Macro Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Plane Position (Slide) Sequence | (0048,021A) | 1 | Describes position of frame in the Total Pixel Matrix and in the Slide Coordinate System Frame of Reference. Only a single Item shall be included in this Sequence.
>Column Position In Total Image Pixel Matrix | (0048,021E) | 1 | The column position of the top left hand pixel of the frame in the Total Pixel Matrix (see Section C.8.12.4.1.1). The column position of the top left pixel of the Total Pixel Matrix is 1.
>Row Position In Total Image Pixel Matrix | (0048,021F) | 1 | The row position of the top left hand pixel of the frame in the Total Pixel Matrix (see Section C.8.12.4.1.1). The row position of the top left pixel of the Total Pixel Matrix is 1.
>X Offset in Slide Coordinate System | (0040,072A) | 1 | The X offset in mm from the Origin of the Slide Coordinate System. See Figure C.8-16.
>Y Offset in Slide Coordinate System | (0040,073A) | 1 | The Y offset in mm from the Origin of the Slide Coordinate System. See Figure C.8-16.
>Z Offset in Slide Coordinate System | (0040,074A) | 1 | The Z offset in µm from the Origin of the Slide Coordinate System, nominally the surface of the glass slide substrate. See Figure C.8-17 ### Note Required even if only a single focal plane was acquired.

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