Материал: part03

Required if Float Pixel Padding Value (0028,0122) is present.​

Note​

1.​If only a single padding value rather than a range is required,​ thenbothFloatPixelPaddingValue(0028,0122)andFloatPixel​ Padding Range Limit (0028,0124) will contain the same value.​

2.​ThegeneralconsiderationsdescribedinSectionC.7.5.1.1.2may​ be helpful in understanding the corresponding floating point​ Attributes, but are not normative.​

C.7.6.25 Double Floating Point Image Pixel Module​

Table C.7.6.25-1 describes the Double Floating Point Image Pixel Module. This Module differs from the Section C.7.6.3 Image Pixel​ Module in that:​

•​instead of integer stored pixel values, double float stored pixel values are used​

•​Bits Stored (0028,0101) and High Bit (0028,0102) are not used because the stored pixel values always occupy the entire word​

•​Pixel Representation (0028,0103) is not used because the stored pixel values are always signed​

•​Photometric Interpretation is constrained​

•​color palette tables are not used​

•​Pixel Data Provider URL (0028,7FE0) is not used​

Table C.7.6.25-1. Double Floating Point Image Pixel Module Attributes​

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Required if Double Float Pixel Padding Value (0028,0123) is present.​

Note​

1.​If only a single padding value rather than a range is required,​ then both Double Float Pixel Padding Value (0028,0123) and​ DoubleFloatPixelPaddingRangeLimit(0028,0125)willcontain​ the same value.​

2.​The general considerations described in Section C.7.5.1.1.2​ maybehelpfulinunderstandingthecorrespondingfloatingpoint​ Attributes, but are not normative.​

C.7.6.26 Real-Time Bulk Data Flow Module​

This module references pixels/waveforms that are not contained within the DICOM dataset but conveyed in the associated Flows, as​ described in Section 6.1 in PS3.22.​

Table C.7.6.26-1 specifies the Attributes for the Real-Time Bulk Data Flow Module.​

Table C.7.6.26-1. Real-Time Bulk Data Flow Module Attributes​

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In case the Source is producing different Flows of the same Essence (e.g., video with two different sampling rates), the sequence​ must include at least the audio or video Flow that is associated with the present RTV Flow, and may in addition include the other​ Flow(s) , enabling the receiver to subscribe to another Flow.​

C.7.6.26.1 Real-Time Bulk Data Flow Module Attributes​

C.7.6.26.1.1 Source Identifier​

The Source Identifier(0034,0005) is a Universally Unique Identifier (UUID). The value is 128 bits long encoded in binary. It shall cor-​ respondtothevalueoftheSourceIdentifieroftherelatedbulkdataFlowwhichmaycontainthisSourceIdentifierintheRTPExtended​ Header. In case such Source Identifier is not present in the related bulk data flow, this Source Identifier shall be set to enable multiple​ IODs to refer the same Source.​

C.7.6.26.1.2 Flow Identifier​

TheFlowIdentifier(0034,0002)isaUniversallyUniqueIdentifier(UUID).Thevalueis128bitslongencodedinbinary.Itshallcorrespond​ to the value of the Flow Identifier of the bulk data Flow which may contain this Flow Identifier in the RTP Extended Header. In case​ such Flow Identifier is not present in the related bulk data flow, this Flow Identifier shall be set to enable multiple IODs to refer the​ same Flow.​

C.7.6.26.1.3 Flow Transfer Syntax UID​

The Flow Transfer Syntax UID (0034,0003) shall be the one relative to the corresponding Flow. The sequence shall have at least one​ item in which the Flow Transfer Syntax UID and the Flow RTP Sampling Rate correspond to the Transfer Syntax UID (0002,0010)​ and RTV Flow RTP Sampling Rate (0002,0037) , respectively, of the DICOM-RTV Meta Information Header.​

C.7.6.26.1.4 Flow RTP Sampling Rate​

The Flow RTP Sampling Rate (0034,0004) shall be the one defined in the SDP of the corresponding Flow.​

C.7.6.27 Current Frame Functional Groups Module​

Table C.7.6.27-1 defines the Attributes related to the current frame when the IOD is transported using Real-Time Communication. It​ corresponds to the "per-frame" Attribute for the non-Real-Time IODs.​

Note​

The group number (0006H) of the Sequence containing the Attributes of the Current Frame Functional Groups Module is​ used to contain Attributes that are specific to real-time transfer. If this information needs to be kept in a persistent object, its​ contents have to be copied into an Attribute that has a group number of 0008H or higher. The Current Frame Functional​ Groups Module is relative to the dynamic part of the RTP Payload. Its group number is lower than that of other Attributes in​ order to be placed before the static part of the RTP Payload, but higher than the Attributes of the RTV Metadata Information,​ in order to be placed after the header of the RTP Payload, as is done in PS3.10.​

Table C.7.6.27-1. Current Frame Functional Groups Module Attributes​

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C.7.6.27.1 Current Frame Functional Groups Module Attributes​

C.7.6.27.1.1 Frame Origin Timestamp​

Frame Origin Timestamp (0034,0007) contains 10 bytes conforming with the IEEE 1588:2008 (PTPv2) standard. IEEE 1588:2008​ represents seconds and nanoseconds since Epoch, defined as 1 of January, 1970, at 00:00:00 TAI (International Atomic Time). The​ first 6 bytes contain the number of seconds, and the last 4 bytes contain the number of nanoseconds. The Time Source and Time​ Distribution Protocol values defined in Table C.7-7 “Synchronization Module Attributes” describe how the time was obtained.​

IftheRTPHeaderextensionofaframecontainsanPTPOriginTimestamp,thatvaluesshallbeusedfortheFrameOriginTimestamp.​ Otherwise, the Frame Origin Timestamp value can be derived from Flow RTP sampling rate, the RTP Timestamp, and the reference​ time for the RTP Timestamp.​

Frame Origin Timestamp is used to pair content from different Flows (payload flow with metadata flow), through a time alignment​ mechanism.​

C.7.6.28 Real-Time Acquisition Module​

Table C.7.6.28-1 defines the Attributes related to all frames when the IOD is transported using Real-Time Communication.​

Table C.7.6.28-1. Real-Time Acquisition Module Attributes​

>Include one or more Functional Group Macros that are shared by​ForeachIODthatincludesthismodule,atableisdefinedinwhich​ all frames.​ the permitted Functional Group Macros and their usage is​

specified.​

Enumerated Values:​

YES​

NO​

C.7.6.28.1 Real-Time Acquisition Module Attributes​

C.7.6.28.1.1 Stereo Pairs Present​

Stereo Pairs Present (0022,0028) shall have the value of YES when frame is encoded as left and right stereoscopic pair.​

C.7.7 Patient Summary Module​

Retired. See PS3.3-2004.​

C.7.8 Study Content Module​

Retired. See PS3.3-2004.​

C.7.9 Palette Color Lookup Table Module​

Table C.7-22 specifies the Attributes that describe the Lookup table data for images with Palette Color photometric interpretation.​

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When the Palette Color Lookup Table Module is present in an Image IOD, the conditional requirements for the use of Palette Color​ Lookup Table Data (0028,1201-1203) and Segmented Palette Color Lookup Table Data (0028,1221-1223), described in Table C.7-​ 22, shall take precedence over the conditional requirements described in the Image Pixel Module (see Section C.7.6.3). When the​ Palette Color Lookup Table Module is present in a Presentation State IOD, the Palette Color Lookup Table Data (0028,1201-1203)​ Attributes are mandatory and the Segmented Palette Color Lookup Table Data (0028,1221-1223) shall not be present. When the​ Palette Color Lookup Table Module is present in a Color Palette IOD, either the Palette Color Lookup Table Data (0028,1201-1203)​ or Segmented Palette Color Lookup Table Data (0028,1221-1223) Attributes may be used.​

WhenthePaletteColorLookupTableModuleispresentinaColorPaletteIOD,the3rdvalueofPaletteColorLookupTableDescriptor​ (0028,1101-1103) (i.e, the number of bits for each entry in the Lookup Table Data) shall be 8.​

Table C.7-22. Palette Color Lookup Table Module Attributes​

Attribute Name​ Tag​ Type​ Attribute Description​

Include Table C.7-22a “Palette Color Lookup Table Macro Attributes”​

Table C.7-22a. Palette Color Lookup Table Macro Attributes​

C.7.9.1 Palette Color Lookup Table UID​

This Attribute uniquely identifies a palette color lookup table set (red, green, blue).​

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