C.8.24.6 Enhanced US Volume Functional Group Macros

The following sections contain Functional Group macros specific to the Enhanced US Volume 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.8.24.6.1 US Image Description Macro

Table C.8.24.6.1-1 specifies the attributes of the US Image Description Functional Group Macro.

Table C.8.24.6.1-1US IMAGE DESCRIPTION MACRO ATTRIBUTES

Attribute Name Tag Type Attribute Description
US Image Description Sequence (0018,9806) 1 A sequence that describes a general description of this image or frame. Only a single Item shall be included in this sequence.
>Frame Type (0008,9007) 1 Type of Frame. A multi-valued attribute analogous to the Image Type (0008,0008). Enumerated Values and Defined Terms are the same as those for the four values of the Image Type (0008,0008) attribute, except that the value MIXED is not allowed. See section C.8.24.3.2.
>Volumetric Properties (0008,9206) 1 Indication if geometric manipulations are possible with frames in the SOP Instance. See C.8.16.2.1.2 for a description and Enumerated Values.
>Volume Based Calculation Technique (0008,9207) 1 Method used for volume calculations with frames in the SOP Instance. See C.8.16.2.1.3 for a description and Defined Terms.

If Volumetric Properties (0008,9206) is VOLUME and Volume Based Calculation Technique (0008,9207) is NONE, all frames in the frame set shall be spaced the same Z-distance from adjacent frames (i.e., spacing between slices is constant).