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DICOM PS3.3 2020a - Information Object Definitions​

Page 1091​

C.8.21.3.1.1 X-Ray 3D General Shared Acquisition Macro​

Table C.8.21.3.1.1-1 describes the X-Ray 3D General Shared Acquisition Macro that specifies the Attributes that are applicable for​ all the projection images belonging to this acquisition context.​

Table C.8.21.3.1.1-1. X-Ray 3D General Shared Acquisition Macro Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

SourceImageSequence​

(0008,2112)​

1C​

ASequencethatidentifiesthesetofImagesthatconstitutethisacquisition​

 

 

 

context.​

 

 

 

Required if the reconstruction is created from DICOM SOP Instances.​

 

 

 

Note​

 

 

 

The Attribute is absent in the case where the images used to​

 

 

 

create the volume are not available as SOP Instances, e.g., the​

 

 

 

volume was directly generated by acquisition system.​

 

 

 

One or more Items shall be included in this Sequence.​

>IncludeTable10-3“ImageSOPInstanceReferenceMacro​

Attributes”​

 

 

 

Field of View​

(0018,9461)​

1C​

Dimensions in mm of the Field of View in the source projection images.​

Dimension(s) in Float​

 

 

If Field of View Shape (0018,1147) is:​

 

 

 

RECTANGLE: row dimension followed by column.​

 

 

 

ROUND: diameter.​

 

 

 

HEXAGONAL: diameter of the circle circumscribing the hexagon.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

 

 

 

Required if Modality (0008,0060) is MG.​

Field of View Origin​

(0018,7030)​

1C​

Offset of the TLHC of a rectangle circumscribing the Field of View in the​

 

 

 

referenced images, before rotation or flipping, from the TLHC of the​

 

 

 

physical detector area measured in physical detector pixels as a row​

 

 

 

offset followed by a column offset.​

 

 

 

See Section C.8.11.4.1.1 for further explanation.​

 

 

 

Required if X-Ray Receptor Type (0018,9420) is present and equals​

 

 

 

DIGITAL_DETECTOR.​

Field of View Rotation​

(0018,7032)​

1C​

Clockwise rotation in degrees of Field of View in the referenced images,​

 

 

 

relative to the physical detector.​

Enumerated Values:​

270​

180​

90​

0​

See Section C.8.11.4.1.1 for further explanation.​

Required if present and consistent in the contributing SOP Instances.​

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DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

Field of View Horizontal​

(0018,7034)​

1C​

Whether or not a horizontal flip has been applied to the Field of View in​

Flip​

 

 

the referenced images, after rotation relative to the physical detector as​

 

 

 

described in Field of View Rotation (0018,7032).​

 

 

 

Enumerated Values:​

 

 

 

NO​

 

 

 

YES​

 

 

 

See Section C.8.11.4.1.1 for further explanation.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

Grid​

(0018,1166)​

1C​

Identifies the grid. May be multi-valued. See Attribute Description in​

 

 

 

Section C.8.7.11 for Defined Terms.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

 

 

 

Required if Modality (0008,0060) is MG.​

Include Table C.8-36b “X-Ray Grid Description Macro​

 

Attributes”​

 

 

 

KVP​

(0018,0060)​

1C​

Average of the peak kilo voltage outputs of the X-Ray generator used for​

 

 

 

all frames.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

 

 

 

Required if Modality (0008,0060) is MG.​

X-Ray Tube Current in​

(0018,9330)​

1C​

AverageofthenominalX-Raytubecurrentsinmilliamperesforallframes.​

mA​

 

 

Required if present and consistent in the contributing SOP Instances.​

 

 

 

 

 

 

Required if Modality (0008,0060) is MG.​

Exposure Time in ms​

(0018,9328)​

1C​

Total (cumulative) duration of X-Ray exposure for all frames in​

 

 

 

milliseconds. See Section C.8.7.2.1.1.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

 

 

 

Required if Modality (0008,0060) is MG.​

Exposure in mAs​

(0018,9332)​

1C​

The total (cumulative) exposure for all frames expressed in​

 

 

 

milliampereseconds, for example calculated from Exposure Time and​

 

 

 

X-Ray Tube Current.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

 

 

 

Required if Modality (0008,0060) is MG.​

Contrast/Bolus Agent​

(0018,0010)​

1C​

Contrast or bolus agent.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

Contrast/Bolus Agent​

(0018,0012)​

1C​

Sequence that identifies the contrast agent.​

Sequence​

 

 

One or more Items shall be included in this Sequence.​

 

 

 

 

 

 

Required if present and consistent in the contributing SOP Instances.​

 

 

 

Required if Modality (0008,0060) is MG and contrast media was applied.​

>Include Table 8.8-1 “Code Sequence Macro Attributes”​ BCID 12 “Radiographic Contrast Agent”.​

Start Acquisition​

(0018,9516)​

1C​

Start date and time of that part of an acquisition used for this acquisition​

DateTime​

 

 

context.​

Required if present and consistent in the contributing SOP Instances.​

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DICOM PS3.3 2020a - Information Object Definitions​

Page 1093​

Attribute Name​

Tag​

Type​

Attribute Description​

 

End Acquisition​

(0018,9517)​

1C​

End date and time of that part of an acquisition used for this acquisition​

DateTime​

 

 

context.​

 

Required if present and consistent in the contributing SOP Instances.​

C.8.21.3.1.2 X-Ray 3D General Per Projection Acquisition Macro​

TableC.8.21.3.1.2-1describestheX-Ray3DGeneralPerProjectionAcquisitionMacrothatspecifiestheAttributesthatareapplicable​ for a single projection belonging to this acquisition context.​

Table C.8.21.3.1.2-1. X-Ray 3D General Per Projection Acquisition Macro Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

KVP​

(0018,0060)​

1C​

Exact peak kilo voltage output of the X-Ray generator used for this​

 

 

 

projection.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

 

 

 

Required if Modality (0008,0060) is MG.​

X-Ray Tube Current in​

(0018,9330)​

1C​

Exact Nominal X-Ray tube current in milliamperes applied during the​

mA​

 

 

Frame Acquisition Duration (0018,9220) for this projection.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

 

 

 

Required if Modality (0008,0060) is MG.​

Frame Acquisition​

(0018,9220)​

1C​

The actual amount of time [in milliseconds] that was used to acquire​

Duration​

 

 

data for this projection. See Section C.7.6.16.2.2.1 and​

 

 

 

Section C.7.6.16.2.2.3 for further explanation.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

Collimator Shape​

(0018,1700)​

1C​

Shape(s) of the collimator.​

 

 

 

Enumerated Values:​

RECTANGULAR​

CIRCULAR​

POLYGONAL​

This multi-valued Attribute shall contain at most one of each​

Enumerated Value.​

Required if present and consistent in the contributing SOP Instances.​

Include Table C.8-28b “X-Ray Collimator Dimensions Macro​

Attributes”​

C.8.21.3.1.3 X-Ray 3D General Positioner Movement Macro​

Table C.8.21.3.1.3-1 describes the X-Ray 3D General Positioner Movement Macro that specifies the Attributes that describe the​ movement of a positioner during the acquisition of more than one projection.​

Table C.8.21.3.1.3-1. X-Ray 3D General Positioner Movement Macro Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Primary Positioner Scan​

(0018,9508)​

1C​

Total amount of rotation of the primary positioner in degrees.​

Arc​

 

 

RequiredifpresentandconsistentinthecontributingSOPInstances.Required​

 

 

 

 

 

 

if Modality (0008,0060) is MG.​

- Standard -​

Page 1094​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

Primary Positioner Scan​

(0018,9510)​

1C​

Start position of the primary positioner in degrees. See Section C.8.7.5.1.2​

Start Angle​

 

 

or Section C.8.11.7, depending on modality and positioner type.​

 

 

 

RequiredifpresentandconsistentinthecontributingSOPInstances.Required​

 

 

 

if Modality (0008,0060) is MG.​

Primary Positioner​

(0018,9514)​

1C​

Constant increment of the primary positioner angle in degrees. Positive​

Increment​

 

 

increment indicates an increasing value of the primary positioner angle. See​

 

 

 

Section C.8.7.5.1.2 or Section C.8.11.7 for the sign conventions depending​

 

 

 

on modality and positioner type.​

 

 

 

See Section C.8.21.3.1.3.1 for further explanation.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

Primary Positioner​

(0018,9518)​

3​

Direction of the primary positioner rotation.​

Increment Sign​

 

 

Defined Terms:​

 

 

 

 

 

 

+1​indicates a positive primary positioner angle increment​

 

 

 

-1​ indicates a negative primary positioner angle increment​

 

 

 

See Section C.8.7.5.1.2 or Section C.8.11.7 for the sign conventions​

 

 

 

depending on modality and positioner type.​

 

 

 

See Section C.8.21.3.1.3.1 for further explanation.​

SecondaryPositionerScan​ (0018,9509)​

1C​

Total amount of rotation of the secondary positioner in degrees.​

Arc​

 

 

Required if present and consistent in the contributing SOP Instances.​

 

 

 

SecondaryPositionerScan​ (0018,9511)​

1C​

Startpositionofthesecondarypositionerindegrees.SeeSectionC.8.7.5.1.2​

Start Angle​

 

 

or Section C.8.11.7, depending on modality and positioner type.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

Secondary Positioner​

(0018,9515)​

1C​

Constant increment of the secondary positioner angle in degrees. Positive​

Increment​

 

 

increment indicates an increasing value of the secondary positioner angle.​

 

 

 

See Section C.8.7.5.1.2 or Section C.8.11.7 for the sign conventions​

 

 

 

depending on modality and positioner type.​

 

 

 

See Section C.8.21.3.1.3.1 for further explanation.​

 

 

 

Required if present and consistent in the contributing SOP Instances.​

Secondary Positioner​

(0018,9519)​

3​

Direction of the secondary positioner rotation.​

Increment Sign​

 

 

Defined Terms:​

 

 

 

+1​indicates a positive secondary positioner angle increment​ -1​ indicates a negative secondary positioner angle increment​

See Section C.8.7.5.1.2 or Section C.8.11.7 for the sign conventions​ depending on modality and positioner type.​

See Section C.8.21.3.1.3.1 for further explanation.​

C.8.21.3.1.3.1 Positioner Angle Increments​

IftheincrementsofthepositioneranglesareconstantduringtheacquisitionoftheX-Rayprojections,theAttributesPrimaryPositioner​ Increment (0018,9514) and the Secondary Positioner Increment (0018,9515) describe this angular change between projections.​

If the change in positioner angle is not constant between the projections, omit the Positioner Angle Increment Attributes and record​ the individual positioner angle values in the Positioner Angle Attributes within each Item of the Per Projection Acquisition Sequence​

- Standard -​

DICOM PS3.3 2020a - Information Object Definitions​

Page 1095​

(0018,9538). In such case, the Attributes Primary Positioner Increment Sign (0018,9518) and Secondary Positioner Increment Sign​ (0018,9519) are used to describe the direction of the positioner rotation.​

C.8.21.3.2 X-Ray 3D Angiographic Acquisition Module​

This section describes the X-Ray 3D Angiographic Acquisition Module.​

Table C.8.21.3.2-1. X-Ray 3D Angiographic Acquisition Module Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

X-Ray 3D Acquisition​

(0018,9507)​

1​

EachItemrepresentsanacquisitioncontextrelatedtooneormore​

Sequence​

 

 

reconstructions.​

 

 

 

ThevaluesofAcquisitionIndex(0020,9518)maybeusedasindex​

 

 

 

to Items in this Sequence.​

 

 

 

One or more Items shall be included in this Sequence.​

>Field of View Shape​

(0018,1147)​

1C​

Shape of the Field of View in the referenced images.​

 

 

 

Enumerated Values:​

 

 

 

RECTANGLE​

 

 

 

ROUND​

 

 

 

HEXAGONAL​

 

 

 

Required if present and consistent in the contributing SOP​

 

 

 

Instances.​

>X-Ray Receptor Type​

(0018,9420)​

1C​

Identifies the type of X-Ray receptor used.​

 

 

 

Enumerated Values:​

 

 

 

IMG_INTENSIFIER​

 

 

 

DIGITAL_DETECTOR​

 

 

 

Required if present and consistent in the contributing SOP​

 

 

 

Instances.​

>Include Table C.8.21.3.1.1-1 “X-Ray 3D General Shared​

 

Acquisition Macro Attributes”​

 

 

 

>IncludeTableC.8-71b“DigitalX-RayDetectorMacroAttributes”​

>Physical Detector Size​

(0018,9429)​

1C​

Dimensionsofthephysicaldetectormeasuredinmmasarowsize​

 

 

 

followed by a column size.​

 

 

 

Required if present and consistent in the contributing SOP​

 

 

 

Instances.​

>Position of Isocenter​

(0018,9430)​

1C​

Position of the Isocenter measured in physical detector elements​

Projection​

 

 

as a row offset followed by a column offset from the TLHC of a​

 

 

 

rectangle circumscribing the physical detector area.​

Required if Isocenter Reference System Sequence (0018,9462) is​ present and if the values are present and consistent in the​ contributing SOP Instances.​

- Standard -​

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