DICOM PS3.3 2024d - Information Object Definitions |
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This section describes the Photoacoustic Image Module.
Table C.8.34.1-1 contains the Attributes that describe Photoacoustic Images.
Table C.8.34.1-1. Photoacoustic Image Module Attributes
Image characteristics. See Section C.8.34.1.1 for specialization. |
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Dimension organization of the Instance. Defined Terms: See Section C.8.34.1.2 for details. |
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The date and time that the acquisition of data that resulted in this image started. |
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Include Table C.8-131 “Common CT/MR and Photoacoustic Image Description Macro Attributes” |
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Number of samples (planes) in this image. For Enumerated Values See Section C.8.34.1.3. |
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Specifies the intended interpretation of the pixel data. Enumerated Values are specified in the IOD that invokes this Module. See Section C.7.6.3.1.2 for definition of this term. |
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Number of bits allocated for each pixel sample. Each sample shall have the same number of bits allocated. For Enumerated Values See Section C.8.34.1.3. |
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Number of bits stored for each pixel sample. Each sample shall have the same number of bits stored. For Enumerated Values See Section C.8.34.1.3. |
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Most significant bit for pixel sample data. Each sample shall have the same high bit. Shall be one less than the value in Bits Stored (0028,0101). |
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Data representation of the pixel samples. Each sample shall have the same pixel representation. For Enumerated Values see Section C.8.34.1.3. |
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Indicates whether the pixel data are encoded color-by-plane or color-by-pixel. Required if Samples per Pixel (0028,0002) has a value greater than 1. See Section C.7.6.3.1.3 and Section C.8.34.1.3 for further explanation. |
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Describes the type of position measuring device used in the acquisition of the image. This gives an indication of the degree of precision of Pixel Spacing (0028,0030) and the spacing between adjacent planes. NoteThe actual precision will depend on a variety of factors such as the tracking technology used and the quality of the calibration. Enumerated Values:
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Specifies whether an Image has undergone lossy compression (at a point in its lifetime). Enumerated Values: Once this value has been set to "01" it shall not be reset. See Section C.7.6.1.1.5. |
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Describes the approximate lossy compression ratio(s) that have been applied to this image. |
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A label for the lossy compression method(s) that have been applied to this image. |
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Specifies an identity transformation for the Presentation LUT, such that the output of all grayscale transformations defined in the IOD containing this Module are defined to be P-Values. Required if Photometric Interpretation (0028,0004) is MONOCHROME2. |
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Indicates whether or not image contains sufficient burned in annotation to identify the patient and date the image was acquired. |
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Indicates whether or not the image contains sufficiently recognizable visual features to allow the image or a reconstruction from a set of images to identify the patient. If this Attribute is absent, then the image may or may not contain recognizable visual features. |
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See Section C.7.6.1.1.6. |
Value 1 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in Section C.8.16.1.1.
Value 2 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in Section C.8.16.1.2.
See Section C.8.16.1.3 for requirements, but not Defined Terms.
Table C.8.34.1.1.3-1 specifies the Defined Terms for Photoacoustic Images for Value 3 for Image Type (0008,0008) and Frame Type (0008,9007).
Value 4 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in Section C.8.16.1.4.
Photoacoustic Image studies include one or more Photoacoustic images indexed with Multi-frame Dimensions. The Dimension Organization Type (0020,9311) specifies the general structure of the image. The concept of "multi-frame dimensions" as specified by the Dimension Index Sequence (0020,9222) and per-frame Dimension Index Values (0020,9157) is used to specify the relationships of frames within that general structure.
The Dimension Index Sequence (0020,9222) shall have at least three Items, with the dimension values described in Table C.8.34.1.2-1. I.e., these Dimension values will all be present even if there is only one value for a given Dimension.
It is expected that some implementations may include additional dimensions such as Photoacoustic Excitation Characteristics Sequence (0018,9821) or Reconstruction Algorithm Sequence (0018,993D).
Table C.8.34.1.3-1 specifies the Enumerated Values and allowed combinations of Samples per Pixel (0028,0002), Planar Configuration (0028,0006), Pixel Representation (0028,0103), Bits Allocated (0028,0100) and Bits Stored (0028,0101) for each Photometric Interpretation allowed by the IOD that invokes this Module.
Table C.8.34.1.3-1. Allowed Combinations of Attribute Values for Photometric Interpretation, Samples Per Pixel, Planar Configuration, Pixel Representation, Bits Allocated and Bits Stored
DICOM PS3.3 2024d - Information Object Definitions |
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