DICOM PS3.17 2021c - Explanatory Information

JJJJ.5.2 Examples For Material Quantification Image Family: (Current)
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### JJJJ.5.2 Examples For Material Quantification Image Family:

#### JJJJ.5.2.1 Example Switching Source Integrating Detector

This example shows a Material Specific image acquired on an acquisition device with single switching sources and integrating detector.

Table JJJJ.5.2.1-1. CT Image Module Attributes

Attribute Name | Tag | Values
--- | --- | ---
Image Type | (0008,0008) | ORIGINAL\PRIMARY\AXIAL\MAT_SPECIFIC
Multi-energy CT Acquisition | (0018,9361) | YES
… |  |
Rescale Intercept | (0028,1052) | 0
Rescale Slope | (0028,1053) | 1
Rescale Type | (0028,1054) | 10^-2 MGML
… |  |
KVP | (0018,0060) | {null value because it is described below}
… |  |
Single Collimation Width | (0018,9306) | 0.625
Total Collimation Width | (0018,9307) | 80.0
… |  |
Include Table 10-27 “RT Equipment Correlation Macro Attributes Description” in PS3.3 |

Table JJJJ.5.2.1-2. Multi-energy CT Image Attributes

Attribute Name | Tag | Values
--- | --- | ---
Multi-energy CT Acquisition Sequence | (0018,9362) |
>Multi-energy Acquisition Description | (0018,937B) | KV Switching Technique
>Include Table JJJJ.5.2.1-3 “Multi-energy CT X-Ray Source Macro Attributes” |
>Include Table JJJJ.5.2.1-4 “Multi-energy CT X-Ray Detector Macro Attributes” |
>Include Table JJJJ.5.2.1-5 “Multi-energy CT Path Macro Attributes” |
>Include Table JJJJ.5.2.1-6 “CT Exposure Macro Attributes” |
>Include Table JJJJ.5.2.1-7 “CT X-Ray Details Sequence Macro Attributes” |
>Include Table JJJJ.5.2.1-8 “CT Acquisition Details Macro Attributes” |
>Include Table JJJJ.5.2.1-9 “CT Geometry Macro Attributes” |
Multi-energy CT Processing Sequence | (0018,9363) |
>Include Table JJJJ.5.2.1-10 “Multi-energy CT Processing Attributes” |

Table JJJJ.5.2.1-3. Multi-energy CT X-Ray Source Macro Attributes

Attribute Name | Tag | Values
--- | --- | ---
Multi-energy CT X-Ray Source Sequence | (0018,9365) |
ITEM 1
>X-Ray Source Index | (0018,9366) | 1
>X-Ray Source ID | (0018,9367) | Tube A
>Multi-energy Source Technique | (0018,9368) | SWITCHING_SOURCE
>Source Start DateTime | (0018,9369) | 2018.05.01 13:22:03
>Source End DateTime | (0018,936A) | 2018.05.01 13:22:20
>Switching Phase Number | (0018,936B) | 1
>Switching Phase Nominal Duration | (0018,936C) | 100
>Switching Phase Transition Duration | (0018,936D) | 10
>Generator Power | (0018,1170) | 120
ITEM 2
>X-Ray Source Index | (0018,9366) | 2
>X-Ray Source ID | (0018,9367) | Tube A
>Multi-energy Source Technique | (0018,9368) | SWITCHING_SOURCE
>Source Start DateTime | (0018,9369) | 2018.05.01 13:22:03
>Source End DateTime | (0018,936A) | 2018.05.01 13:22:20
>Switching Phase Number | (0018,936B) | 2
>Switching Phase Nominal Duration | (0018,936C) | 100
>Switching Phase Transition Duration | (0018,936D) | 10
>Generator Power | (0018,1170) | 100

Table JJJJ.5.2.1-4. Multi-energy CT X-Ray Detector Macro Attributes

Attribute Name | Tag | Values
--- | --- | ---
Multi-energy CT X-Ray Detector Sequence | (0018,936F) |
ITEM 1
>X-Ray Detector Index | (0018,9370) | 1
>X-Ray Detector ID | (0018,9371) | Detector A
>Multi-energy Detector Type | (0018,9372) | INTEGRATING

Table JJJJ.5.2.1-5. Multi-energy CT Path Macro Attributes

Attribute Name | Tag | Values
--- | --- | ---
Multi-energy CT Path Sequence | (0018,9379) |
ITEM 1
>Multi-energy CT Path Index | (0018,937A) | 1
>X-Ray Source Index | (0018,9366) | 1
>X-Ray Detector Index | (0018,9370) | 1
ITEM 2
>Multi-energy CT Path Index | (0018,937A) | 2
>X-Ray Source Index | (0018,9366) | 2
>X-Ray Detector Index | (0018,9370) | 1

Table JJJJ.5.2.1-6. CT Exposure Macro Attributes

Attribute Name | Tag | Values
--- | --- | ---
CT Exposure Sequence | (0018,9321) |
ITEM 1
>Referenced X-Ray Source Index | (0018,9377) | 1\2
>Exposure Time in ms | (0018,9328) | 500
>X-Ray Tube Current in mA | (0018,9330) | 300
>Exposure in mAs | (0018,9332) | 150
>Exposure Modulation Type | (0018,9323) | NONE
>CTDIvol | (0018,9345) | 10

Table JJJJ.5.2.1-7. CT X-Ray Details Sequence Macro Attributes

Attribute Name | Tag | Values
--- | --- | ---
CT X-Ray Details Sequence | (0018,9325) |
ITEM 1
>Referenced Path Index | (0018,9378) | 1
>KVP | (0018,0060) | 80
>Focal Spot(s) | (0018,1190) | 0.5\0.5
>Filter Type | (0018,1160) | NONE
ITEM 2
>Referenced Path Index | (0018,9378) | 2
>KVP | (0018,0060) | 140
>Focal Spot(s) | (0018,1190) | 0.5\0.5
>Filter Type | (0018,1160) | NONE

Table JJJJ.5.2.1-8. CT Acquisition Details Macro Attributes

Attribute Name | Tag | Values
--- | --- | ---
CT Acquisition Details Sequence | (0018,9304) |
ITEM 1
>Referenced Path Index | (0018,9378) | 1\2
>Rotation Direction | (0018,1140) | CW
>Revolution Time | (0018,9305) | 0.5
>Single Collimation Width | (0018,9306) | 0.625
>Total Collimation Width | (0018,9307) | 80.0
>Table Height | (0018,1130) | 88.5
>Gantry/Detector Tilt | (0018,1120) | 0
>Data Collection Diameter | (0018,0090) | 500

Table JJJJ.5.2.1-9. CT Geometry Macro Attributes

Attribute Name | Tag | Values
--- | --- | ---
CT Geometry Sequence | (0018,9312) |
ITEM 1
>Referenced Path Index | (0018,9378) | 1\2
>Distance Source to Detector | (0018,1110) | 1140
>Distance Source to Data Collection Center | (0018,9335) | 570

Table JJJJ.5.2.1-10. Multi-energy CT Processing Attributes

Attribute Name | Tag | Values
--- | --- | ---
Decomposition Method | (0018,937E) | PROJECTION_BASED
Decomposition Material Sequence | (0018,9381) |
ITEM 1
>Material Code Sequence | (0018,937D) |
>>Include Table 8.8-1 “Code Sequence Macro Attributes” in PS3.3 | (11713004, SCT, "Water")
ITEM 2
>Material Code Sequence | (0018,937D) |
>>Include Table 8.8-1 “Code Sequence Macro Attributes” in PS3.3 | (44588005, SCT, "Iodine")

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DICOM PS3.17 2021c - Explanatory Information