This Section describes Computed Radiography Series and Image Modules. These Modules contain Attributes that are specific to Computed Radiography images. There is no Computed Radiography Equipment Module.
Table C.8-1 contains IOD Attributes that describe a computed radiography series performed on the patient.
Table C.8-1. CR Series Module Attributes
|
Attribute Name |
Tag |
Type |
Attribute Description |
|---|---|---|---|
|
Body Part Examined |
(0018,0015) |
2 |
Text description of the part of the body examined. See Annex L “Correspondence of Anatomic Region Codes and Body Part Examined Defined Terms” in PS3.16 for Defined Terms |
|
View Position |
(0018,5101) |
2 |
Radiographic view associated with Patient Position (0018,5100). For humans: Defined Terms:
For animals, capitalized versions with hyphens replaced by underscores of the abbreviations defined in "Smallwood et al. A Nomenclature for Radiographic Projections Used In Veterinary Medicine" shall be used. See CID 7484 “DX View for Animals”, in which these abbreviations are listed. Note
|
|
Filter Type |
(0018,1160) |
3 |
Label for the type of filter inserted into the x-ray beam |
|
Collimator/grid Name |
(0018,1180) |
3 |
Label describing any grid inserted. |
|
Focal Spot(s) |
(0018,1190) |
3 |
Size of the focal spot in mm. For devices with variable focal spot or multiple focal spots, small dimension followed by large dimension. |
|
Plate Type |
(0018,1260) |
3 |
Label of the type of storage phosphor plates used in this series |
|
Phosphor Type |
(0018,1261) |
3 |
Label of type of phosphor on the plates |
Table C.8-2 contains IOD Attributes that describe computed radiography images.
Table C.8-2. CR Image Module Attributes
|
Attribute Name |
Tag |
Type |
Attribute Description |
|---|---|---|---|
|
Photometric Interpretation |
(0028,0004) |
1 |
Specifies the intended interpretation of the pixel data. Enumerated Values:
|
|
KVP |
(0018,0060) |
3 |
Peak kilo voltage output of the x-ray generator used |
|
Plate ID |
(0018,1004) |
3 |
The ID or serial number of the sensing plate upon which the image was acquired |
|
Distance Source to Detector |
(0018,1110) |
3 |
Distance in mm from source to detector center. NoteThis value is traditionally referred to as Source Image Receptor Distance (SID). |
|
Distance Source to Patient |
(0018,1111) |
3 |
Distance in mm from source to center of field of view. NoteThis value is traditionally referred to as Source Object Distance (SOD). |
|
Exposure Time |
(0018,1150) |
3 |
Time of x-ray exposure in msec |
|
X-Ray Tube Current |
(0018,1151) |
3 |
X-Ray Tube Current in mA. |
|
Exposure |
(0018,1152) |
3 |
The exposure expressed in mAs, for example calculated from Exposure Time and X-Ray Tube Current. |
|
Exposure in µAs |
(0018,1153) |
3 |
The exposure expressed in µAs, for example calculated from Exposure Time and X-Ray Tube Current. |
|
Imager Pixel Spacing |
(0018,1164) |
3 |
Physical distance measured at the front plane of the Image Receptor housing between the center of each pixel. Specified by a numeric pair - row spacing value (delimiter) column spacing value - in mm. In the case of CR, the front plane is defined to be the external surface of the CR plate closest to the patient and radiation source. |
|
Include Table 10-10 “Basic Pixel Spacing Calibration Macro Attributes” |
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|
Generator Power |
(0018,1170) |
3 |
Power in kW to the x-ray generator. |
|
Acquisition Device Processing Description |
(0018,1400) |
3 |
Describes device-specific processing associated with the image (e.g., Organ Description) |
|
Acquisition Device Processing Code |
(0018,1401) |
3 |
Code representing the device-specific processing associated with the image (e.g., CR Organ Filtering code) |
|
Cassette Orientation |
(0018,1402) |
3 |
Orientation of cassette, used to properly position the image for display. Enumerated Values:
|
|
Cassette Size |
(0018,1403) |
3 |
Size of cassette. Defined Terms:
|
|
Exposures on Plate |
(0018,1404) |
3 |
Total number of x-ray exposures that have been made on the plate identified in Plate ID (0018,1004) |
|
Relative X-Ray Exposure |
(0018,1405) |
3 |
Relative x-ray exposure on the plate. Meaning of values is implementation specific. May be used to adjust the dynamic range of the plate digitizer (scanner). NoteThis value is manufacturer-specific. DICOM specifies standard Attributes in Table 10-23 “Exposure Index Macro Attributes”, which are recommended. |
|
Sensitivity |
(0018,6000) |
3 |
Read out sensitivity. NoteThis value is manufacturer-specific. DICOM specifies standard Attributes in Table 10-23 'Exposure Index Macro', which are recommended. |
|
Include Table 10-7 “General Anatomy Optional Macro Attributes” |
Defined CID for the Anatomic Region Sequence is 4009 for humans, and 7482 for animals. |
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