Table C.8.22-3 specifies the attributes of the Enhanced PET Image Module.
Table C.8.22-3. Enhanced PET Image Module Attributes
|
Attribute Name |
Tag |
Type |
Attribute Description |
|---|---|---|---|
|
Image Type |
(0008,0008) |
1 |
Image characteristics. See Section C.8.22.3.1.1. |
|
Include Table C.8-131 “Common CT/MR Image Description Macro Attributes” |
|||
|
Acquisition Number |
(0020,0012) |
3 |
A number identifying the single continuous gathering of data over a period of time that resulted in this image, which may include multiple bed positions. NoteThis number is not required to be unique across SOP Instances in a series. See also the description of the Referenced Raw Data Sequence (0008,9121). |
|
Acquisition DateTime |
(0008,002A) |
1C |
The date and time that the acquisition of data started. Note
Required if Image Type (0008,0008) Value 1 of this frame is ORIGINAL and SOP Class UID is not "1.2.840.10008.5.1.4.1.1.128.1" (Legacy Converted), may be present otherwise. |
|
Acquisition Duration |
(0018,9073) |
1C |
The time in seconds needed to complete the acquisition of data. See Section C.7.6.16.2.2.1 for further explanation. Required if Image Type (0008,0008) Value 1 of this frame is ORIGINAL and SOP Class UID is not "1.2.840.10008.5.1.4.1.1.128.1" (Legacy Converted), may be present otherwise. |
|
Referenced Raw Data Sequence |
(0008,9121) |
3 |
A sequence that identifies the set of Raw Data SOP Class/Instance pairs of the Raw data that were used to derive this Image. One or more Items are permitted in this Sequence. NoteThe items of in this sequence may identify raw data that has not been stored or encoded as a DICOM object. This allows recognition that images and spectra in different instances have been reconstructed from the same raw data. For such items the SOP Class UID would be "1.2.840.10008.5.1.4.1.1.66" (Raw Data SOP Class) and the SOP Instance UID would be any appropriate UID. |
|
>Include Table C.17-3 “Hierarchical SOP Instance Reference Macro Attributes” |
|||
|
Referenced Waveform Sequence |
(0008,113A) |
3 |
References to waveforms acquired in conjunction with this image. These Waveforms may or may not be temporally synchronized with this image. One or more Items are permitted in this sequence. |
|
>Include Table C.17-3 “Hierarchical SOP Instance Reference Macro Attributes” |
|||
|
Referenced Image Evidence Sequence |
(0008,9092) |
1C |
Full set of Composite SOP Instances referring to image SOP Instances inside the frames of this Enhanced PET Image SOP Instance. See Section C.8.13.2.1.2 for further explanation. One or more Items shall be included in this sequence. Required if the Referenced Image Sequence (0008,1140) is present. |
|
>Include Table C.17-3 “Hierarchical SOP Instance Reference Macro Attributes” |
|||
|
Source Image Evidence Sequence |
(0008,9154) |
1C |
Full set of Composite SOP Instances used as source image SOP Instances inside the frames of this Enhanced PET Image SOP Instance. See Section C.8.13.2.1.2 for further explanation. One or more Items shall be included in this sequence. Required if the Source Image Sequence (0008,2112) is present. |
|
>Include Table C.17-3 “Hierarchical SOP Instance Reference Macro Attributes” |
|||
|
Samples per Pixel |
(0028,0002) |
1 |
Number of samples (planes) in this image. This value shall be 1. |
|
Photometric Interpretation |
(0028,0004) |
1 |
Specifies the intended interpretation of the pixel data. Enumerated Values:
See Section C.7.6.3.1.2 for definition of this term. |
|
Bits Allocated |
(0028,0100) |
1 |
Number of bits allocated for each pixel sample. Each sample shall have the same number of bits allocated. This value shall be 16. |
|
Bits Stored |
(0028,0101) |
1 |
Number of bits stored for each pixel sample. Each sample shall have the same number of bits stored. This value shall be 16. |
|
High Bit |
(0028,0102) |
1 |
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). |
|
Content Qualification |
(0018,9004) |
1 |
Content Qualification Indicator Enumerated Values:
See Section C.8.13.2.1.1 for further explanation. |
|
Image Comments |
(0020,4000) |
3 |
User-defined comments about the image |
|
Burned in Annotation |
(0028,0301) |
1C |
Indicates that the image does not contain burned in annotations. Enumerated Values:
This means that images that contain this Module shall not contain burned in annotations. Required if SOP Class UID is not "1.2.840.10008.5.1.4.1.1.128.1" (Legacy Converted), may be present otherwise. |
|
Recognizable Visual Features |
(0028,0302) |
3 |
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. Enumerated Values:
If this Attribute is absent, then the image may or may not contain recognizable visual features. |
|
Lossy Image Compression |
(0028,2110) |
1C |
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. Required if SOP Class UID is not "1.2.840.10008.5.1.4.1.1.128.1" (Legacy Converted). May be present otherwise. |
|
Lossy Image Compression Ratio |
(0028,2112) |
1C |
Describes the approximate lossy compression ratio(s) that have been applied to this image. Required if Lossy Image Compression (0028,2110) is "01". |
|
Lossy Image Compression Method |
(0028,2114) |
1C |
A label for the lossy compression method(s) that have been applied to this image. Required if Lossy Image Compression (0028,2110) is "01". |
|
Presentation LUT Shape |
(2050,0020) |
1 |
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. Enumerated Values:
|
|
Icon Image Sequence |
(0088,0200) |
3 |
This icon image is representative of the Image. Only a single Item is permitted in this sequence. |
|
See Section C.7.6.1.1.6 for further explanation. |
|||
The Image Type Attribute (0008,0008) and Frame Type (0008,9007) identifies important image characteristics in a multiple valued data element. In addition to the requirements specified in Section C.8.16.1 Image Type and Frame Type, the following additional requirements and Defined Terms are specified:
Value 1 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in Section C.8.16.1.1. No additional requirements or Defined Terms.
Value 2 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in Section C.8.16.1.2. No additional requirements or Defined Terms.
Value 3 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in Section C.8.16.1.3. No additional requirements or Defined Terms.
Value 4 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in Section C.8.16.1.4. No additional requirements or Defined Terms.
The attribute Attenuation Correction Source (0018,9738) contains the source of the attenuation map information used for attenuation correction.
Defined Terms:
Emission data is used to calculate the correction map.
The attribute Attenuation Correction Temporal Relationship (0018,9770) specifies the temporal relationship between the attenuation correction source image and the PET image data.
Defined Terms:
The attenuation correction source image is acquired at approximately the same time and with the patient in the same body position as the PET image; for example, as acquired on a hybrid scanner
The attenuation correction source image is acquired at a different time, on a different system, or the patient has been moved significantly enough to cause soft tissue movement; for example, an attenuation correction source image acquired on a separate CT scanner, so that the patient must move from one bed to another
The attenuation correction source image is acquired at the same time and with the patient in the same body position as the PET image