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Page 1316​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

>Image Box Overlap​

(0072,0320)​

3​

If this Image Box overlaps in spatial position with others, this Attribute​

Priority​

 

 

indicates the layer of this Image Box in relation to the others. The value​

 

 

 

shall be a positive integer in the range 1 to 100, where 1 = top and 100 =​

 

 

 

bottom. If this Attribute is not present, then the expected behavior is not​

 

 

 

defined.​

>Display Set Horizontal​

(0072,0717)​

3​

IndicatesdirectioninwhichtohorizontallyjustifytheimagewithinanImage​

Justification​

 

 

Box that is not the same shape (aspect ratio) as the image.​

 

 

 

Enumerated Values:​

 

 

 

LEFT​

 

 

 

CENTER​

 

 

 

RIGHT​

 

 

 

Note​

 

 

 

Typically used in mammography display applications in which​

 

 

 

images from the patient's left and right are displayed "back to​

 

 

 

back", rather than centered.​

>Display Set Vertical​

(0072,0718)​

3​

Indicates direction in which to vertically justify the image within an Image​

Justification​

 

 

Box that is not the same shape (aspect ratio) as the image.​

 

 

 

Enumerated Values:​

 

 

 

TOP​

 

 

 

CENTER​

 

 

 

BOTTOM​

>Preferred Playback​

(0018,1244)​

1C​

DescribesthepreferredplaybacksequencingfortheImageBox.Overrides​

Sequencing​

 

 

anyPreferredPlaybackSequencing(0018,1244)valueintheimageobjects​

 

 

 

being displayed.​

 

 

 

Required if the value of Image Box Layout Type (0072,0304) is CINE.​

 

 

 

Enumerated Values:​

 

 

 

0​Looping (1,2…n,1,2,…n,1,2,….n,…)​

 

 

 

1​Sweeping (1,2,…n,n-1,…2,1,2,…n,…)​

 

 

 

2​Stop (1,2…n)​

>Recommended Display​

(0008,2144)​

1C​

Recommended rate at which the frames of a multi-frame image shall be​

Frame Rate​

 

 

displayed, in frames/second. Shall have a value greater than zero.​

 

 

 

Overrides any Recommended Display Frame Rate (0008,2144) value in​

 

 

 

the image objects being displayed.​

 

 

 

Required if the value of Image Box Layout Type (0072,0304) is CINE and​

 

 

 

if Cine Relative to Real-Time (0072,0330) is not present.​

>Cine Relative to​

(0072,0330)​

1C​

A positive dimensionless floating point numeric factor equal to playback​

Real-Time​

 

 

rate divided by acquisition rate.​

Required if the value of Image Box Layout Type (0072,0304) is CINE and​ if Recommended Display Frame Rate (0008,2144) is not present.​

Note​

The acquisition rate may change within the image object, as​ specified in Frame Time Vector (0018,1065).​

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 1317​

Attribute Name​

Tag​

Type​

Attribute Description​

 

>Initial Cine Run State​

(0018,0042)​

1C​

Defined Terms:​

 

 

 

 

STOPPED​

 

 

 

 

RUNNING​

 

 

 

 

Required if the value of Image Box Layout Type (0072,0304) is CINE.​

>Start Trim​

(0008,2142)​

2C​

The frame number of the first frame of the multi-frame image to be​

 

 

 

displayed in a CINE Image Box.​

 

 

 

 

Required if the value of Image Box Layout Type (0072,0304) is CINE.​

>Stop Trim​

(0008,2143)​

2C​

The Frame Number of the last frame of the multi-frame image to be​

 

 

 

displayed in a CINE Image Box.​

 

 

 

 

Required if the value of Image Box Layout Type (0072,0304) is CINE.​

>Referenced First Frame​

(0072,0427)​

2C​

Reference to the initial frame in a stack to be displayed in this image box.​

Sequence​

 

 

If value is not present, the first image frame to be displayed is not defined​

 

 

 

by the Standard.​

 

 

 

 

Zero or one Item shall be included in this Sequence.​

 

 

 

 

Required if the value of Image Box Layout Type (0072,0304) is STACK.​

>>Include Table 10-3 “Image SOP Instance Reference​

 

 

Macro Attributes”​

 

 

 

 

>Referenced Image​

(0008,1140)​

2C​

ReferencetotheImageSOPInstances,orframesfrommulti-frameImage​

Sequence​

 

 

SOP Instances, to be displayed in this Image Box.​

 

 

 

 

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

 

 

 

 

Required if Referenced Presentation State Sequence (0008,9237),​

 

 

 

ReferencedStereometricInstanceSequence(0008,1134),andReferenced​

 

 

 

Instance Sequence (0008,114A) are not present.​

 

 

 

 

See Section C.11.17.1.2.​

 

>>Include Table 10-3 “Image SOP Instance Reference​

Note​

 

Macro Attributes”​

 

 

The order of frames identified in the Referenced Frame Number​

 

 

 

 

 

 

(0008,1160) Attribute affects ordering in STACK Image Box​

 

 

 

Layout. See Section C.11.17.1.2.​

 

>>Referenced​

(0008,9237)​

1C​

Reference to a Softcopy Presentation State SOP Instance to be applied​

Presentation State​

 

 

to the referenced image.​

 

Sequence​

 

 

Only a single Item shall be permitted in this sequence.​

 

 

 

 

 

Required if presentation controls are to be applied to the image or image​ frame before rendering in the Structured Display.​

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

- Standard -​

Page 1318​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

>ReferencedPresentation​

(0008,9237)​

1C​

ReferencetoaSoftcopyPresentationStateSOPInstanceoraVolumetric​

State Sequence​

 

 

Presentation State SOP Instance whose referenced images are to be​

 

 

 

displayed in the Image Box using the presentation controls of the​

 

 

 

referenced SOP Instance.​

 

 

 

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

 

 

 

only permitted if the Image Box Layout Type (0072,0304) has a value of​

 

 

 

VOLUME_CINE.​

 

 

 

Required if Referenced Image Sequence (0008,1140), Referenced​

 

 

 

Stereometric Instance Sequence (0008,1134), and Referenced Instance​

 

 

 

Sequence (0008,114A) are not present.​

 

 

 

See Section C.11.17.1.2.​

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

 

Attributes”​

 

 

 

>Referenced Instance​

(0008,114A)​

1C​

Reference to a non-image SOP Instance (e.g., waveform, SR,​

Sequence​

 

 

encapsulated document) whose content is to be displayed in the Image​

 

 

 

Box.​

 

 

 

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

 

 

 

Required if Referenced Presentation State Sequence (0008,9237),​

 

 

 

ReferencedStereometricInstanceSequence(0008,1134),andReferenced​

 

 

 

Image Sequence (0008,1140) are not present.​

 

 

 

See Section C.11.17.1.3.​

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

 

Attributes”​

 

 

 

>ReferencedStereometric​

(0008,1134)​

1C​

Reference to a Stereometric SOP Instance whose referenced images are​

Instance Sequence​

 

 

to be displayed in the Image Box.​

 

 

 

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

 

 

 

Required if Referenced Presentation State Sequence (0008,9237),​

 

 

 

Referenced Instance Sequence (0008,114A), and Referenced Image​

 

 

 

Sequence (0008,1140) are not present.​

 

 

 

See Section C.11.17.1.4.​

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

 

Attributes”​

 

 

 

Image Box​

(0072,0430)​

1C​

Description of synchronized display between two or more Image Boxes.​

Synchronization​

 

 

Required if synchronized display is specified between Image Boxes.​

Sequence​

 

 

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

 

 

 

>SynchronizedImageBox​

(0072,0432)​

1​

Multi-valued list of two or more Image Box Number (0072,0302) values.​

List​

 

 

Indicates that the display of multiple image frames within the specified​

 

 

 

Image Boxes are synchronized.​

Referenced Image Boxes shall be of same Image Box Layout Type​ (0072,0304).​

An Image Box Number value may appear in only one Image Box​

Synchronization Sequence (0072,0430) Item.​

- Standard -​

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 1319​

Attribute Name​

Tag​

Type​

Attribute Description​

 

>TypeofSynchronization​

(0072,0434)​

1​

Type of synchronization between Image Boxes.​

 

 

 

 

Defined Terms:​

 

FRAME​

POSITION​

TIME​

PHASE​

See Section C.11.17.1.5.​

C.11.17.1 Structured Display Image Box Attribute Descriptions​

C.11.17.1.1 Display Environment Spatial Position​

The Display Environment Spatial Position (0072,0108) specifies the corners of the Image Box relative to the vertical and horizontal​ dimensionsoftheDisplayEnvironment,specifiedasNumberofVerticalPixels(0072,0104)andNumberofHorizontalPixels(0072,0106)​ in the Nominal Screen Definition Sequence (0072,0102).​

See also Section C.23.2.1.1.​

Within the Image Box, the image (or the area of the image selected for display by the associated Presentation State SOP Instance)​ shall be scaled to fit the display area under the constraint that the aspect ratio of the image is maintained.​

InrenderingtheImageBox,theApplicationEntitymayrenderdisplaycontrols(suchascinespeedcontrol,orstackpositionindication)​ either within or outside the specified Display Environment Spatial Position (0072,0108).​

C.11.17.1.2 Referenced Image Sequence and Referenced Presentation State Sequence​

Image SOP Instances, or frames from multi-frame SOP Instances, to be displayed in an Image Box may be identified either directly​ by the Referenced Image Sequence (0008,1140), or indirectly through the Referenced Presentation State Sequence (0008,9237).​

Referenced Image Sequence (0008,1140) is permitted to be zero length, indicating an empty Image Box.​

Note​

1.​The recommended display color for an empty Image Box is specified by Empty Image Box CIELab Value (0072,0421).​

2.​When displaying a standard template such as a dental full mouth series, an empty image box may be used to indicate​ that the corresponding view was not taken.​

If images are identified indirectly through the Referenced Presentation State Sequence (0008,9237), all of the image frames identified​ in the top level Referenced Series Sequence (0008,1115) Attribute shall be displayed. For images identified indirectly through a​ Blending Presentation State SOP Instance, all the image frames for which the Blending Position (0070,0405) value is UNDERLYING​ shall be displayed, with the relevant SUPERIMPOSED images blended as necessary.​

If images are to be displayed, the number of frames referenced for display shall be consistent with the value of Image Box Layout​ Type(0072,0304).IfthevalueofImageBoxLayoutTypeisSINGLE,onlyasingleframeshallbereferenced,eitherdirectlyorindirectly;​ if the value is CINE, only a single multi-frame SOP Instance shall be referenced.​

If the value of Image Box Layout Type is STACK, more than one SOP Instance or frame may be referenced, and the frames constitute​ a stack to be displayed in the Image Box. For frames identified by the Referenced Image Sequence, the order of stepping through​ the stack shall be the order of Image SOP Instance references in that Sequence. If multiple frames are selected in Referenced Frame​ Number (0008,1160), those frames shall be stepped through in the order of their listing in that Attribute, within the order of display of​ their Image SOP Instance.​

ForastackwhoseframesareselectedindirectlythroughanItemoftheReferencedPresentationStateSequence,theorderofstepping​ through the stack shall be the order of SOP Instance references in the Referenced Series Sequence (0008,1115) of the referenced​ Presentation State. For a referenced Blending Softcopy Presentation State, this shall be the Referenced Series Sequence within the​ Blending Sequence (0070,0402) Item for which the Blending Position (0070,0405) value is UNDERLYING.​

- Standard -​

Page 1320​

DICOM PS3.3 2020a - Information Object Definitions​

Note​

1.​Display of images using Blending Softcopy Presentation State must use indirect SOP Instance reference through the​ Referenced Presentation State Sequence (0008,9237) at the top level of Structured Display Image Box Sequence​ (0072,0422)Item,andcannotusetheReferencedPresentationStateSequencewithinanItemoftheReferencedImage​ Sequence (0008,1140).​

2.​A Blending Presentation State that references a blending of a single underlying frame and a single superimposed frame​ may be associated with a SINGLE Image Box Layout.​

3.​Areferencetoasingledisplayframe,eitherdirectlythroughReferencedImageSequenceorindirectlythroughReferenced​ Presentation State Sequence, may be associated with either a STACK or a CINE Image Box Layout as a degenerate​ case.​

4.​There is no requirement for the pixel matrix sizes of the images in the stack, or the image display area as selected by​ referenced Presentation State SOP Instances, to be identical, nor for the referenced images to be of the same SOP​ Class.​

5.​Referenced Presentation States are an initial presentation control. The rendering Application Entity might allow a user​ to interactively enable/disable graphic layers, or change the zoom, rotation, window width / window level, or other​ presentation controls. Any such Application Entity functionality is beyond the scope of the Standard.​

C.11.17.1.3 Referenced Instance Sequence​

The Referenced Instance Sequence (0008,114A) references a non-Image SOP Instance, e.g., a Structured Report, Waveform, or​ Encapsulated Document SOP Instance, to be displayed in the image box. For such object references, the value of Image Box Layout​ Type (0072,0304) shall be SINGLE, even if displaying the object will require scrolling or paging (e.g., a multi-page encapsulated​ document).​

C.11.17.1.4 Referenced Stereometric Instance Sequence​

TheReferencedStereometricInstanceSequence(0008,1134)referencesaStereometricSOPInstance,whoseStereoPairsSequence​ (0022,0020) references image pairs to be displayed in the Image Box. The number of image pairs referenced for display shall be​ consistent with the value of Image Box Layout Type (0072,0304). If the value of Image Box Layout Type is SINGLE, only a single​ pair of frames shall be referenced by the Stereo Pairs Sequence in the referenced stereometric instance; if the value is CINE, only a​ single pair of multi-frame SOP Instances shall be referenced; if the value is STACK, one or more pairs may be referenced constituting​ a stack to be displayed in the Image Box, and the order of stepping through the stack shall be the order of Items in the Stereo Pairs​ Sequence. The manner in which a stereo pair is rendered is unspecified.​

Note​

1.​While theStereometricIODallows referencetomultiplepairsofmulti-framecineInstances,the CINE ImageBox Layout​ does not support the display of more than one (a "stack" of cines).​

2.​Display of stereo pairs typically requires specialized hardware (e.g., polarizing filters and shutter glasses).​

C.11.17.1.5 Type of Synchronization​

Type of Synchronization (0072,0434) specifies the method for synchronizing the display of images in two or more Image Boxes linked​ through the Synchronized Image Box List (0072,0432).​

FRAME​ SteppingofframesinoneImageBoxissynchronizedbythesteppingofanidenticalnumberofframesintheotherImage​

Boxes.​

POSITION​Stepping of frames in one Image Box is synchronized by the stepping of frames in the other Image Boxes to effect an​ identicalrelativepositionaloffsetwithinthePatient-BasedCoordinateSystem.Thispresumesthatthereferencedimages​ includesImagePosition(Patient)(0020,0032)andImageOrientation(Patient)(0020,0037)Attributes,andthatthestacks​ have approximately the same orientation relative to the Patient-Based Coordinate System.​

TIME​ Playback of frames in one Image Box is synchronized by the playback of frames in the other Image Boxes to effect an​ identical temporal offset from the original displayed frame. This presumes that the referenced images include Frame​ Time (0018,1063), Frame Time Vector (0018,1065), or Frame Reference DateTime (0018,9151). It also presumes that​

- Standard -​

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