For US Images, Image Type (0008,0008) is specified to be Type 2. The Defined Terms for Value 3 are:
Value 4 is constructed as a modality bit map to allow for a description of multi-modality displays. In using this bit map, the sum of the values of the various modalities will unambiguously determine the constituent modalities.
|0001 = 2D Imaging||0002 = M-Mode||0004 = CW Doppler|
|0008 = PW Doppler||0010 = Color Doppler||0020 = Color M-Mode|
|0040 = 3D Rendering||0100 = Color Power Mode||0200 = Tissue Characterization|
|0400 = Spatially-related frames|
Notes: 1. All Values are hexadecimal encoded as a CS. See PS 3.5.
2. For example, Color Flow with CW spectral Doppler would have a value 4 = 0015. Note that no assumption should be made in Color Doppler or Color M-Mode regarding underlying B or M-Mode, respectively.
3. See Section A.59.1 for the relationship between a 3D volume set and the 3D Rendering, 3D MPR View, and Spatially-related frames image types. In the case of “3D Rendering”, Derivation Code Sequence (0008,9215) should be used to describe the specific type of 3D rendering (volume rendering, surface rendering, multiplanar reformatting, etc.).