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Page 1226​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

Quality Control Image​

(0028,0300)​

3​

Indicateswhetherornotthisimageisaqualitycontrolofphantomimage.​

 

 

 

Enumerated Values:​

 

 

 

YES​

 

 

 

NO​

Burned in Annotation​

(0028,0301)​

1​

Indicates whether or not the image contains sufficient burned in​

 

 

 

annotation to identify the patient and date the image was acquired.​

 

 

 

Enumerated Values:​

 

 

 

NO​

LossyImageCompression​

(0028,2110)​

1​

Specifies whether an Image has undergone lossy compression (at a​

 

 

 

point in its lifetime).​

 

 

 

Enumerated Values:​

 

 

 

00​Image has NOT been subjected to lossy compression.​

 

 

 

01​Image has been subjected to lossy compression.​

 

 

 

Once this value has been set to 01 it shall not be reset.​

 

 

 

See Section C.7.6.1.1.5.​

LossyImageCompression​

(0028,2112)​

1C​

Describes the approximate lossy compression ratio(s) that have been​

Ratio​

 

 

applied to this image.​

 

 

 

See Section C.7.6.1.1.5.2.​

 

 

 

Required if Lossy Image Compression (0028,2110) is "01".​

LossyImageCompression​

(0028,2114)​

1C​

A label for the lossy compression method(s) that have been applied to​

Method​

 

 

this image.​

 

 

 

See Section C.7.6.1.1.5.1.​

 

 

 

Required if Lossy Image Compression (0028,2110) is "01".​

Organ Dose​

(0040,0316)​

1​

Organ dose value measured in dGy representing the collective total for​

 

 

 

all acquired frames.​

 

 

 

Note​

 

 

 

This may be an estimated value.​

Entrance Dose in mGy​

(0040,8302)​

1​

Entrance dose value measured in mGy at the surface of the patient​

representing the collective total for all acquired frames.​ Note​

This may be an estimated value based on assumptions about​ the patient's body size and habitus.​

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DICOM PS3.3 2020a - Information Object Definitions​

Page 1227​

Attribute Name​

Tag​

Type​

 

Attribute Description​

 

Entrance Dose Derivation​

(0040,8303)​

3​

Describes what type of dose is represented by the values of Entrance​

 

 

 

Dose in mGy (0040,8302).​

 

 

 

 

Enumerated Values:​

 

 

 

 

IAK​

Represents air kerma at the entrance surface, no​

 

 

 

 

backscatterincluded,noairkermatotissuedoseconversion​

 

 

 

 

applied.​

 

 

 

 

ESAK​

Represents air kerma at the entrance surface, with​

 

 

 

 

backscatterincluded,noairkermatotissuedoseconversion​

 

 

 

 

applied.​

 

 

 

 

ESDBS​

Representsabsorbeddoseintissueattheentrancesurface,​

 

 

 

 

with backscatter included.​

 

 

 

 

ESDNOBS​Representsabsorbeddoseintissueattheentrancesurface,​

 

 

 

 

without backscatter included.​

 

Type of Detector Motion​

(0054,0202)​

1​

Describes the activity of the Detector during acquisition.​

 

 

 

 

See C.8.31.1.1 for Defined Terms.​

 

Icon Image Sequence​

(0088,0200)​

3​

This icon image is representative of the Image. Only a single Item is​

 

 

 

permitted in this Sequence.​

 

>Include Table C.7-11b “Image Pixel Macro Attributes”​

See C.7.6.1.1.6 for further explanation.​

 

Presentation LUT Shape​

(2050,0020)​

1​

SpecifiesatransformationforthePresentationLUTsuchthattheoutput​

 

 

 

of all grayscale transformations, if any, is defined to be in P-Values.​

Enumerated Values:​

IDENTITY​ output is in P-Values; shall be used if Photometric​

Interpretation (0028,0004) is MONOCHROME2.​

INVERSE​ output after inversion is in P-Values; shall be used if​

Photometric Interpretation (0028,0004) is​

MONOCHROME1.​

C.8.31.1.1 Positioner and Detector Motion Attribute Descriptions​

Positioner Motion (0018,1500) and Type of Detector Motion (0054,0202) shall have the Defined Terms specified in Table C.8.31.1.1-​ 1.​

 

Table C.8.31.1.1-1. Types of Positioner and Detector Motion​

STATIONARY​

No motion​

ROTATION_STEP​

Circular arc motion, stepped, acquire only while stationary​

ROTATION_CONT​

Circular arc motion, continuous during acquisition​

TRANSLATION_STEP​

Linear motion, stepped, acquire only while stationary​

TRANSLATION_CONT​

Linear motion, continuous during acquisition​

COMPLEX_STEP​

Complex motion, stepped, acquire only while stationary​

COMPLEX_CONT​

Complex motion, continuous during acquisition​

Complex motion is defined as that which is not simply described by linear translation or rotation around an axis.​

C.8.31.2 Breast X-Ray Positioner Macro​

Table C.8.31.2-1 specifies the Attributes of the Breast X-Ray Positioner Functional Group Macro.​

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Page 1228​ DICOM PS3.3 2020a - Information Object Definitions​

Table C.8.31.2-1. Breast X-Ray Positioner Macro Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Positioner Position​

(0018,9405)​

1​

A Sequence that describes the geometrical position of the positioner.​

Sequence​

 

 

Only a single Item shall be included in this Sequence.​

 

 

 

>PositionerPrimaryAngle​ (0018,1510)​

1C​

SignedpositionindegreesoftheX-Raybeamvectorinthecoronalanatomical​

 

 

 

plane as if the patient were standing facing the equipment where vertical is​

 

 

 

zero.​

 

 

 

Required if X-Ray source can be moved in the coronal anatomical plane. May​

 

 

 

be present otherwise.​

>PositionerPrimaryAngle​ (0018,9559)​

1C​

The interpretation of the sign of the Positioner Primary Angle (0018,1510).​

Direction​

 

 

Enumerated Values:​

 

 

 

 

 

 

CW​Clockwise. Positioner Primary Angle movement is positive when​

 

 

 

movement is from vertical to the patient's right (with patient standing,​

 

 

 

facing the equipment).​

 

 

 

CC​Counter-clockwise.PositionerPrimaryAngleispositivewhenmovement​

 

 

 

is from vertical to the patient's left (with patient standing, facing the​

 

 

 

equipment).​

 

 

 

See Figure C.8.31.2-1.​

 

 

 

Required if Positioner Primary Angle (0018,1510) is present.​

>Positioner Secondary​

(0018,1511)​

1C​

Position in degrees of the X-Ray beam vector in the sagittal anatomical plane​

Angle​

 

 

as if the patient were standing where movement of the X-Ray source from​

 

 

 

anterior to posterior is positive, and vertical is zero.​

Required if the X-Ray source can be moved in the sagittal anatomical plane.​

May be present otherwise.​

C.8.31.2.1 Breast X-Ray Positioner Attribute Descriptions​

FigureC.8.31.2-1illustratestheDefinedTermsforPositionerPrimaryAngleDirection(0018,9559),indicatingwhichC-armmovement​ direction defines a positive value for Positioner Primary Angle (0018,1510).​

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DICOM PS3.3 2020a - Information Object Definitions​

Page 1229​

CC

CW

Figure C.8.31.2-1. Illustration of Positioner Primary Angle Direction​

C.8.31.3 Breast X-Ray Detector Macro​

Table C.8.31.3-1 specifies the Attributes of the Breast X-Ray Detector Functional Group Macro.​

Table C.8.31.3-1. Breast X-Ray Detector Macro Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Detector Position​

(0018,9541)​

1​

A Sequence that describes the geometrical position of the detector.​

Sequence​

 

 

Only a single Item shall be included in this Sequence.​

 

 

 

>Detector Primary Angle​ (0018,1530)​

1C​

Angle of the X-Ray beam in the row direction in degrees relative to the normal​

 

 

 

to the detector plane. Positive values indicate that the X-Ray beam is tilted​

 

 

 

toward higher numbered columns. Negative values indicate that the X-Ray​

 

 

 

beam is tilted toward lower numbered columns.​

 

 

 

See C.8.11.7.1.2.​

 

 

 

Required if the detector can be moved in the row direction. May be present​

 

 

 

otherwise.​

>Detector Secondary​

(0018,1531)​

1C​

Angle of the X-Ray beam in the column direction in degrees relative to the​

Angle​

 

 

normal to the detector plane. Positive values indicate that the X-Ray beam is​

tilted toward lower numbered rows. Negative values indicate that the X-Ray​ beam is tilted toward higher numbered rows.​

See C.8.11.7.1.2.​

Requiredifthedetectorcanbemovedinthecolumndirection.Maybepresent​ otherwise.​

C.8.31.4 Breast X-Ray Geometry Macro​

Table C.8.31.4-1 specifies the Attributes of the Breast X-Ray Geometry Functional Group Macro.​

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Page 1230​ DICOM PS3.3 2020a - Information Object Definitions​

Table C.8.31.4-1. Breast X-Ray Geometry Macro Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

X-Ray Geometry Sequence​

(0018,9476)​

1​

Sequence containing the geometric properties for this frame or set of​

 

 

 

frames.​

 

 

 

Only a single Item shall be included in this Sequence.​

>DistanceSourcetoDetector​

(0018,1110)​

1C​

Distance in mm from source to detector center on the chest wall line.​

 

 

 

RequiredifPresentationIntentType(0008,0068)=FORPROCESSING.​

 

 

 

May be present otherwise.​

 

 

 

Note​

 

 

 

1.​This value is traditionally referred to as Source Image​

 

 

 

Distance (SID).​

 

 

 

2.​See C.8.11.7.1.1.​

>Distance Source to Patient​

(0018,1111)​

1C​

Distance in mm from source to the Breast Support side that is closest to​

 

 

 

the Imaging Subject, as measured along the X-Ray beam vector.​

 

 

 

RequiredifPresentationIntentType(0008,0068)=FORPROCESSING.​

 

 

 

May be present otherwise.​

 

 

 

Note​

 

 

 

1.​This value is traditionally referred to as Source Object​

 

 

 

Distance (SOD).​

 

 

 

2.​See notes for this Attribute in C.8.11.5.​

 

 

 

3.​See C.8.11.7.1.1 for description of X-Ray beam vector.​

>Distance Source to​

(0018,9402)​

1C​

Distance from source to isocenter in mm.​

Isocenter​

 

 

RequiredifPresentationIntentType(0008,0068)=FORPROCESSING.​

 

 

 

 

 

 

May be present otherwise.​

>DistanceSourcetoEntrance​

(0040,0306)​

3​

Distance in mm from the source to the surface of the patient closest to​

 

 

 

the source during the acquisition of this image.​

 

 

 

Note​

 

 

 

This may be an estimated value based on assumptions about​

 

 

 

the patient's body size and habitus.​

>Estimated Radiographic​

(0018,1114)​

1​

Ratio of Source Image Distance (SID) over Source Object Distance​

Magnification Factor​

 

 

(SOD).​

C.8.31.5 Breast X-Ray Acquisition Dose Macro​

Table C.8.31.5-1 specifies the Attributes of the X-Ray Acquisition Dose Functional Group Macro.​

Table C.8.31.5-1. Breast X-Ray Acquisition Dose Macro Attributes​

Attribute Name​

Tag​

Type​ Attribute Description​

X-Ray Acquisition Dose​

(0018,9542)​

1​

Sequence containing the X-Ray exposure information for this frame.​

Sequence​

 

 

Only a single Item shall be included in this Sequence.​

 

 

 

>Exposure Time in ms​

(0018,9328)​

1​

Duration of X-Ray exposure in milliseconds.​

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