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Page 1106​

DICOM PS3.3 2020a - Information Object Definitions​

Table C.8.21.6-1a. Defined Terms of Image Type (0008,0008) Value 3 for Contrast Enhanced,​ Tomosynthesis and Biopsy​

Defined Term​

Definition​

ACRMQCMEquivalent​

Contrast​

 

 

PRE_CONTRAST​

Collected before contrast was administered.​

n/a​

POST_CONTRAST​

Collected during or after contrast was administered.​

n/a​

Tomosynthesis​

 

 

TOMO_PROJ​

Identifies the image as a digital breast tomosynthesis projection image.​n/a​

TOMOSYNTHESIS​

Tomographic reconstruction from limited angle projection data.​

n/a​

Biopsy​

 

 

TOMO_SCOUT​

A localizer image set that may be used to determine positioning​

…SC​

 

coordinates prior to needle positioning.​

 

PREFIRE​

An image set obtained with the biopsy needle in position prior to needle​…PRF​

 

deployment.​

 

POSTFIRE​

Animagesetobtainedwiththebiopsyneedleinpositionfollowingneedle​…POF​

 

deployment through the targeted lesion.​

 

POSTBIOPSY​

AnimagesetobtainedfollowingtissueacquisitionwiththeX-Raysource​…POB​

 

in the scout position.​

 

POSTMARKER​

An image set obtained following micromarker placement with the X-Ray​…POM​

 

source in the scout position.​

 

Note​

There is no need for _MINUS or _PLUS because a single digital breast tomosynthesis acquisition produces a projection​ and/or reconstruction image set that replaces the _MINUS and _PLUS image pair used in conventional 2D breast biopsy​ imaging (see Section C.8.11.7.1.4).​

Ifmorethanonecharacteristic(biopsy,tomosynthesis,contrastenhanced)appliestoanimage,Value3shallcontainthebiopsyimage​ type. If biopsy is not involved, Value 3 shall contain the tomosynthesis image type.​

Note​

For example, Attributes of the Enhanced Contrast/Bolus Module may be used to identify contrast enhanced characteristics​ of a biopsy and/or tomosynthesis image that is also contrast enhanced.​

Value 4 shall be NONE except for applicable contrast enhanced images, mathematically generated 2D images and other tomosyn-​ thesisreconstructions.ThefollowingDefinedTermsarespecifiedforValue4ofImageType(0008,0008)andFrameType(0008,9007).​ For additional Defined Terms see Section C.8.16.1.4.​

Table C.8.21.6-1b. Defined Terms of Image Type (0008,0008) Value 4 for Contrast Enhanced and​ Tomosynthesis​

Defined Term​

Definition​

Tomosynthesis​

 

GENERATED_2D​

Mathematically generated 2D view.​

MAXIMUM​

Created through Pixel by pixel maximum operation.​

MEAN​

Created through Pixel by pixel mean operation.​

Contrast​

 

ADDITION​

Created through Pixel by pixel addition operation.​

SUBTRACTION​

Created through Pixel by pixel subtraction operation.​

- Standard -​

DICOM PS3.3 2020a - Information Object Definitions​

Page 1107​

If more than one characteristic (contrast enhanced, tomosynthesis) applies to an image, Value 4 shall contain the contrast enhanced​ image type. If contrast enhanced is not involved, Value 4 shall contain the tomosynthesis image type.​

Value 5 shall be present for images acquired using contrast enhanced digital X-Ray imaging of the breast, but may be empty if none​ of the Defined Terms applies. For non-contrast images Value 5 remains optional and implementation specific.​

Table C.8.21.6-1c. Defined Terms of Image Type (0008,0008) Value 5 for Contrast Enhanced Images​

Enumerated Value​

Definition​

LOW_ENERGY​

Low energy image.​

HIGH_ENERGY​

High energy image.​

Note​

 

A recipient may use the different values for biopsy, tomosynthesis and contrast views to determine how to display them, for​ example in hanging protocols:​

 

Image Type Value 3​

Image Type Value 4​

Image Type Value​

 

 

 

5​

Tomosynthesis thin reconstructed slices​

TOMOSYNTHESIS​

NONE​

-​

Tomosynthesis thick reconstructed slices​

TOMOSYNTHESIS​

MAXIMUM​

-​

Tomosynthesis generated 2D​

TOMOSYNTHESIS​

GENERATED_2D​

-​

Tomosynthesis projections​

TOMO_PROJ​

NONE​

-​

Tomosynthesis thin reconstructed slices biopsy​

POSTFIRE​

NONE​

-​

post-fire​

 

 

 

Tomosynthesisthickreconstructedslicespost-biopsy​

POSTBIOPSY​

MEAN​

-​

Tomosynthesis generated 2D biopsy pre-fire​

PREFIRE​

GENERATED_2D​

-​

Tomosynthesis projections biopsy scout​

TOMO_SCOUT​

NONE​

-​

Tomosynthesisthickreconstructedslicespre-contrast​

TOMOSYNTHESIS​

MAXIMUM​

empty​

Tomosynthesisthinreconstructedslicespost-contrast​

TOMOSYNTHESIS​

SUBTRACTION​

empty​

subtraction​

 

 

 

Tomosynthesisthickreconstructedslicespost-contrast​

TOMOSYNTHESIS​

SUBTRACTION​

empty​

subtraction​

 

 

 

Tomosynthesis generated 2D post-contrast addition​

TOMOSYNTHESIS​

ADDITION​

empty​

Tomosynthesisgenerated2Dpost-contrastlowenergy​

TOMOSYNTHESIS​

GENERATED_2D​ LOW_ENERGY​

Tomosynthesisprojectionspost-contrasthighenergy​

TOMO_PROJ​

NONE​

HIGH_ENERGY​

Tomosynthesisthickreconstructedslicesbiopsyscout​

TOMO_SCOUT​

MAXIMUM​

empty​

pre-contrast​

 

 

 

Tomosynthesis thin reconstructed slices biopsy​

PREFIRE​

SUBTRACTION​

empty​

pre-fire post-contrast subtraction​

 

 

 

Tomosynthesis thick reconstructed slices biopsy​

POSTFIRE​

SUBTRACTION​

empty​

post-fire post-contrast subtraction​

 

 

 

Tomosynthesis generated 2D post-biopsy​

POSTBIOPSY​

ADDITION​

empty​

post-contrast addition​

 

 

 

Tomosynthesis generated 2D biopsy scout​

TOMO_SCOUT​

GENERATED_2D​

LOW_ENERGY​

post-contrast low energy​

 

 

 

Tomosynthesis projections post-biopsy post-contrast​

POSTBIOPSY​

NONE​

HIGH_ENERGY​

high energy​

 

 

 

- Standard -​

Page 1108​

DICOM PS3.3 2020a - Information Object Definitions​

C.8.22 Enhanced PET Modules​

This section describes the specific Modules for the Enhanced PET Image IOD.​

C.8.22.1 Enhanced PET Series Module​

The Enhanced PET IODs use the General Series Module, specialized by the Enhanced PET Series Module, to describe the DICOM​ Series Entity described in Section A.1.2.3, and to define what constitutes a Series for the context of PET device.​

Table C.8.22-1 specifies the Attributes that identify and describe general information about the Enhanced PET Series.​

Table C.8.22-1. Enhanced PET Series Module Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Modality​

(0008,0060)​

1​

Type of equipment that originally acquired the data used to​

 

 

 

create the images in this Series.​

 

 

 

Enumerated Values:​

 

 

 

PT​

 

 

 

See Section C.7.3.1.1.1 for further explanation.​

Referenced Performed​

(0008,1111)​

1C​

UniquelyidentifiesthePerformedProcedureStepSOPInstance​

Procedure Step Sequence​

 

 

to which the Series is related.​

 

 

 

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

 

 

 

RequiredifaPerformedProcedureStepSOPClasswasinvolved​

 

 

 

in the creation of this Series.​

>Include Table 10-11 “SOP Instance Reference Macro Attributes”​

 

Related Series Sequence​

(0008,1250)​

1C​

Identifying the Series that was used for attenuation purposes.​

 

 

 

See Section C.7.3.1​

 

 

 

Required if another Series was used to perform attenuation​

 

 

 

correction and the SOP Class UID is not​

 

 

 

"1.2.840.10008.5.1.4.1.1.128.1" (Legacy Converted). May be​

 

 

 

present otherwise.​

 

 

 

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

>Study Instance UID​

(0020,000D)​

1​

Instance UID of Study to which the related Series belongs​

>Series Instance UID​

(0020,000E)​

1​

Instance UID of Related Series​

>PurposeofReferenceCode​

(0040,A170)​

2​

Describes the purpose for which the reference is made.​

Sequence​

 

 

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

 

 

 

 

 

 

When absent, implies that the reason for the reference is​

 

 

 

unknown.​

>>Include Table 8.8-1 “Code Sequence Macro Attributes”​

DCID 7210 “Related Series Purposes of Reference”.​

C.8.22.2 Enhanced PET Acquisition Module​

Table C.8.22-2 specifies the Attributes that describe PET Acquisitions.​

- Standard -​

DICOM PS3.3 2020a - Information Object Definitions​ Page 1109​

Table C.8.22-2. Enhanced PET Acquisition Module Attributes​

Attribute Name​

Tag​

Type​

Attribute Description​

Acquisition Start Condition​

(0018,0073)​

1C​

Description of how the data collection was started.​

 

 

 

See Section C.8.22.2.1.1 for Defined Terms.​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL. May be​

 

 

 

present otherwise.​

Start Density Threshold​

(0018,9715)​

1C​

The count density that triggered the start of the acquisition, in​

 

 

 

counts/sec. Required if Acquisition Start Condition (0018,0073) equals​

 

 

 

DENS.​

Start Relative Density​

(0018,9716)​

1C​

The relative count density that triggered the start of the acquisition, in​

Difference Threshold​

 

 

counts/sec. Required if Acquisition Start Condition (0018,0073) equals​

 

 

 

RDD.​

Start Cardiac Trigger Count​

(0018,9717)​

1C​

The number of cardiac triggers that occurred before starting the​

Threshold​

 

 

acquisition. Required if Acquisition Start Condition (0018,0073) equals​

 

 

 

CARD_TRIG.​

Start Respiratory Trigger​

(0018,9718)​

1C​

The number of respiratory triggers that occurred before starting the​

Count Threshold​

 

 

acquisition. Required if Acquisition Start Condition (0018,0073) equals​

 

 

 

RESP_TRIG.​

Acquisition Termination​

(0018,0071)​

1C​

Description of how the data collection for the Series was stopped.​

Condition​

 

 

See Section C.8.22.2.1.2 for Defined Terms.​

 

 

 

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL. May be​

 

 

 

present otherwise.​

Termination Counts​

(0018,9719)​

1C​

The count value that triggered the termination of the acquisition.​

Threshold​

 

 

RequiredifAcquisitionTerminationCondition(0018,0071)equalsCNTS.​

 

 

 

Termination Density​

(0018,9720)​

1C​

The count density that triggered the termination of the acquisition, in​

Threshold​

 

 

counts/sec.​

 

 

 

RequiredifAcquisitionTerminationCondition(0018,0071)equalsDENS.​

TerminationRelativeDensity​

(0018,9721)​

1C​

The count relative density that triggered the termination of the​

Threshold​

 

 

acquisition, in counts/sec.​

 

 

 

RequiredifAcquisitionTerminationCondition(0018,0071)equalsRDD.​

Termination Time Threshold​

(0018,9722)​

1C​

The time duration after which the acquisition was terminated, in sec.​

 

 

 

RequiredifAcquisitionTerminationCondition(0018,0071)equalsTIME​

Termination Cardiac Trigger​

(0018,9723)​

1C​

The number of cardiac triggers that triggered the termination of the​

Count Threshold​

 

 

acquisition.​

 

 

 

Required if Acquisition Termination Condition (0018,0071) equals​

 

 

 

CARD_TRIG​

Termination Respiratory​

(0018,9724)​

1C​

The number of respiratory triggers that triggered the termination of the​

Trigger Count Threshold​

 

 

acquisition.​

Required if Acquisition Termination Condition (0018,0071) equals​

RESP_TRIG​

- Standard -​

Page 1110​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

 

Attribute Description​

Type of Detector Motion​

(0054,0202)​

1C​

Describes the type of detector motion during acquisition.​

 

 

 

Defined Terms:​

 

 

 

 

STATIONARY​

No motion​

 

 

 

STEP AND​

Interrupted motion, acquire only while detectors​

 

 

 

SHOOT​

are stationary​

 

 

 

CONTINUOUS​ Gantry motion and acquisition are simultaneous​

 

 

 

 

and continuous​

 

 

 

WOBBLE​

wobble motion​

 

 

 

CLAMSHELL​

clamshell motion​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL. May be​

 

 

 

present otherwise.​

 

Detector Geometry​

(0018,9725)​

1C​

Physical arrangement of the detectors in the acquisition system.​

 

 

 

The radiation entrance surface of a detector may be curved or flat. A​

 

 

 

curved surface is referred to as cylindrical.​

 

 

 

Detectors may simultaneously subtend all possible transverse angles​

 

 

 

from the center of the field of view. Detectors that do not are referred​

 

 

 

to as partial.​

 

 

 

 

Defined Terms:​

 

 

 

 

CYLINDRICAL_RING​

 

 

 

CYL_RING_PARTIAL​

 

 

 

MULTIPLE_PLANAR​

 

 

 

MUL_PLAN_PARTIAL​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL and Type​

 

 

 

of Detector Motion (0054,0202) equals STATIONARY. May be present​

 

 

 

otherwise, if Image Type (0008,0008) Value 1 is DERIVED and Type​

 

 

 

of Detector Motion (0054,0202) equals STATIONARY.​

Transverse Detector​

(0018,9726)​

1C​

Distance between opposing detectors, in mm.​

Separation​

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL. May be​

 

 

 

 

 

 

present otherwise.​

 

Axial Detector Dimension​

(0018,9727)​

1C​

Axial detector size in mm. Size of the detector along the table axis.​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL May be​

 

 

 

present otherwise.​

 

Collimator Type​

(0018,1181)​

1C​

Collimator Type.​

 

 

 

 

Defined Terms:​

 

 

 

 

NONE​no collimator​

 

 

 

RING​transverse septa​

 

 

 

Required if Image Type (0008,0008) Value 1 is ORIGINAL. May be​

 

 

 

present otherwise.​

 

Coincidence Window Width​

(0054,1210)​

1C​

The width of the coincidence-timing window, in nanoseconds. The​

 

 

 

maximum time difference between two single events in two opposing​

 

 

 

detectors that will be accepted as a coincidence event.​

Required if Image Type (0008,0008) Value 1 is ORIGINAL. May be​ present otherwise.​

- Standard -​

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