DICOM News

An overview of the latest progress of the DICOM standard from the recent base standard meeting








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Sup175
2nd Gen. C-Arm RT Treatment



This Supplement introduces the RT Radiation Set and representation of the C-Arm techniques.

An RT Radiation Set IOD defines a Radiotherapy Treatment Fraction as a collection of instances of RT Radiation IODs.

Further this supplement adds support for C-Arm Photon-Electron Radiation instances.

RT Radiation IODs represent different treatment modalities.

This supplement was voted as Final Text and will be part of the next edition of the standard.

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Sup176
2nd Gen. Other non C-Arm RT Treatment



The scope of this supplement is the introduction of new RT Radiation IODs for non-C-Arm treatment devices.

This supplement adds support for instances of the following RT devices:

  • Tomotherapeutic Radiation
  • Multiple Fixed Source Radiation
  • Robotic Radiation Storage


This supplement will be revisited and presented in upcoming base standard meetings. It is getting close to Letter Ballot voting.

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Sup208
Encapsulated Additional Models 3D Manufacturing



This supplement extends the DICOM standard to better address encapsulation and color grouping of medical 3D manufacturing.

It also addresses new uses of medical DICOM data in the fields of Virtual Reality, Augmented Reality, and Mixed Reality.

These extensions fall in three areas:

1) Support for a new 3D model type: Object File (OBJ)

2) Identification which models a part of a group intended for assembly into a larger object

3) Persistently indicating a preferred color for manufacturing or display of a model

OBJ Encapsulation

The supplement will incorporate Object Files (OBJ) and any supporting Material Library Files (MTL) and texture map files (JPG or PNG) referenced from the OBJ files.

Grouping by Assembly and Component Color

Support is added to distinguish groups of models that are parts of the same assembly, from other models that are not.

This supplement was voted ready for Public Comment voting.

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Sup193
Web Services Notification



This supplement defines a generalized abstract API for sending and subscribing to notifications about RESTful resources.

The Notifications API defines Subscribers, Subscriptions, Events and Event Reports.

  • Notifications about Worklist Workitems, already in the Worklist API, but they are modified to conform to the new API.
  • Notifications about the state of a Worklist Service.
  • Notifications about the existence and state of data resources in the Patient, Study, Series, and Instance hierarchy.


Security is beyond the scope of this supplement. However generic Web security mechanisms are fully compatible.

Supplement 193 will be further presented and discussed with the Base Working Group in a coming meeting before Public Comment voting.

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Sup209
DICOM Conformance Statement



This supplement focuses on rewriting part two, DICOM conformance, of the standard.

The goal is to achieve better interoperability and machine processing of DICOM conformance statements.

It was considered advantageous if the template is a separate generated MS Word template.

Supplement 209 will be further presented and discussed with the Base Working Group in a coming meeting before Public Comment voting.

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Sup210
Functional Acquisition Paradigm Protocol



This supplement describes the storage of Paradigm Protocols, the Defined and Performed one. Also adding definition of a Stimuli object for Storage.

Paradigms are used to trigger stimuli used during functional scanning to capture the patient's brain activities.

The flow of events are:

  • A paradigm definition is created
  • A stimuli training run is performed with the patient and the responses are recorded.
  • An acquisition is executed with the paradigm stimuli.
  • Responses and acquired images are recorded and stored.
  • Suitable post processing is performed.
  • It is a working assumption that there is a paradigm creation app and specialized post processing involved.


Supplement 210 will be further presented and discussed with the Base Working Group in a coming meeting before Public Comment voting.

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Sup212
XA Protocol



This Supplement defines a pair of storage SOP Classes to distribute defined XA protocols and to record performed XA protocols.

  • XA Defined Procedure Protocol Storage SOP Class, which includes acquisition, reconstruction and storage tasks.
  • XA Performed Procedure Protocol Storage SOP Class that describes the values actually used in a performed procedure.


The SOP Classes address details including:

  • patient preparation & positioning
  • equipment characteristics
  • acquisition technique
  • reconstruction technique
  • preliminary image handling such as filtering, enhancement
  • results data storage (auto-sending)


The primary goal is to set up the acquisition (and reconstruction) equipment, not to script the entire behavior of the department, or the angiographic suite.

Methods of specification of tube current modulation (and other technical features) vary between vendors and models and are not addressed in standard DICOM data elements.

It is expected that the vast majority of protocol objects will be specific to a certain model and version of acquisition equipment.

Supplement 212 will be further presented and discussed with the Base Working Group in a coming meeting before Public Comment voting.

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Sup214
Cone Beam CT in RDSR



This Supplement creates a structured report with the necessary flexibility to address cone-beam CT acquisitions.

This generic radiation description is capable of representing previously addressed acquisition types (Angiography, Mammography, CR/DR, CT).

Radiotherapy treatment dose and radiopharmaceutical dose are out of scope.

Supplement 214 will be further presented and discussed with the Base Working Group in a coming meeting before Public Comment voting.

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Sup217
Neurophysiology Waveforms



This Supplement introduces a number of Services Classes for Storage of Neurophysiology Waveforms by adding the related Neurophysiology IODs and the necessary Neurophysiology Waveform Context Groups.

It adds a SOP Class to store routine (clinic) electroencephalography (EEG) data recording the electrical activity of the brain collected on the skull surface using electrode positions of the international 10/10 or 10/20 localization scheme.

It adds a SOP Class to store electromyography (EMG) data recording the electrical activity of skeletal muscles.

It adds a SOP Class to store electrooculography (EOG) data collected near the eyes recording eye movement.

It adds a SOP Class to store generic neurophysiology signals.

It adds a transfer syntax for DICOM waveforms using RED compression.

Supplement 217 will be further presented and discussed with the Base Working Group in a coming meeting before Public Comment voting.

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Sup202
Realtime Video



This Supplement describes several new DICOM IODs and associated transfer syntaxes for the transport of real-time video, and/or audio, and associated medical data. These are referred to collectively as DICOM Real-Time Video (DICOM-RTV).

The supplement defines an new IP-based DICOM Service for the broadcasting of real-time video to subscribers with a quality of service which is compatible with the communication inside the operating room (OR).

Professional video (e.g., TV studios) equipment providers and users have defined in SMPTE (ST 2110 family of standards). ST 2110-10 uses a multicast model rather than a peer-to-peer communication model. DICOM-RTV builds upon ST 2110.

DICOM-RTV restricts real-time communication to uncompressed video.

This supplement will be further presented and reviewed in the base standard. It is sent out for Letter Ballot voting.

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Sup218
MR Protocol



This Supplement defines a pair of storage SOP Classes to distribute defined MR protocols and to record performed MR protocols.

The two storage SOP Classes are:

  • MR Defined Procedure Protocol Storage SOP Class that describes desired values (and/or value ranges) for various parameters of an acquisition procedure.
  • MR Performed Procedure Protocol Storage SOP Class that describes the values actually used in a performed acquisition.


The SOP Classes address details including:

  • patient preparation
  • equipment characteristics
  • acquisition technique


Procedure Protocol instances exist in the equipment hierarchy (Defined protocols), Patient-Study hierarchy (Performed protocols).

They can be accessed with the Defined Procedure Protocol query/retrieve service.

The primary goal is to set up the MR scanner, not to script the entire behavior of the department, or the scan suite.

It is expected that the vast majority of protocol objects will be specific to a certain model and version of the MR scanner.

Supplement 218 will be further presented and discussed with the Base Working Group in a coming meeting before Public Comment voting.

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CPack 103
Release Candidates for November 2019

CP1479
Update PS3.4 for expanded Code Sequence
CP1614
Add a bulkdata subresource to study, series and instance WADO-RS
CP1721
Clarification of Distances in Ion Beams
CP1726
Add clarification note that C-FIND SCP should ignore unknown standard and private tags
CP1777
Derivation of Photometric Interpretation in STOW-RS
CP1852
Add code for bounding box for SR
CP1867
Add codes for AI visual explanation maps
CP1868
Update PS3.18 Status Codes to be correct HTTP
CP1869
Interpretation of usage requirements for http headers, including conditional and range requests, is not well defined
CP1871
Notification Connections need to be improved
CP1872
Clarify suspending global subscriptions in UPS-RS
CP1885
Correct conflict in number of values between General Anatomy Optional and Required Macros causing conflict in DX introduced by CP 1744
CP1886
Add trans-rectal to ultrasound beam path context group
CP1887
Correct eyelid and supraorbital anatomy codes
CP1888
Reverse sense of all other encoding based on VR to follow rule for new VRs
CP1890
Add more renal vessels
CP1891
Add generic echocardiography measurements missing from vascular ultrasound context groups
CP1892
Correct code meanings for body surface area codes
CP1893
Fix inconsistent Relationship Content Constraints (SR IODs from Supplement 164)
CP1894
Add translocator protein tracers
CP1895
Add presentation address to file meta information for DULP and Web Services
CP1899
Number of Frames attribute should never have a value of zero
CP1900
WADO-RS Transfer Syntax to use when cannot be decompressed
CP1901
Return in query response what Transfer Syntax is available for retrieval
CP1902
Some IODs that need it are missing the Synchronization Module
CP1903
Add laterality parameter to TID 300
CP1904
Correct code for anatomical structure in CID 7150 and CID 9501
CP1905
Additional Category codes for CID 9502
CP1906
Add Laterality to Treatment Site Code
CP1907
UPS-RS Support for Query Only
CP1909
Add Institution and Admission attributes to UPS
CP1910
Add "all other attributes" row for Patient Demographics to UPS
CP1911
Add Reason For Requested Procedure Query Keys to UPS
CP1912
Correct Retired Attributes in PS3.15 E
CP1913
Coding Scheme Version requires Coding Scheme Designator to be present