What’s New in DICOM 2004 Robert Horn Agfa Healthcare Chair DICOM WG-06 (Base Standard)

What’s New in DICOM 2004What’s New in DICOM 2004

Robert Horn

Agfa Healthcare

Chair DICOM WG-06

(Base Standard)

16 February 2005 SPIE 2005

New in the 2004 DICOM New in the 2004 DICOM PublicationPublication

New Image Objects Enhanced CT Ophthalmic Photography MPEG-2 and Visible Light (for endoscopy)

New Structured Reports OB-Gyn Procedure, Catheterization Lab Procedure Vascular Ultrasound Procedure, Echocardiography Intravascular Ultrasound, Quantitative Arteriography Breast Imaging

Media Related USB and Flash Memory Media Creation Services


New in DICOM 2004 (contd)New in DICOM 2004 (contd)

Other services Relevant Patient Information Query Spatial Registration Instance Availability Notification

Used with other standards Configuration Management Web Access to DICOM Objects


New Structured ReportsNew Structured Reports All of these reports are designed to capture

precise measurements taken by equipment during various diagnostic procedures. Examples include:

– Fetal bone measurements– Vascular flow and diameter measurements

Customized reports are defined for:– OB-Gyn procedures– Catheterization Lab Procedures– Vascular Ultrasound Procedures– Echocardiography– Intravascular Ultrasound (IVUS)– Quantitative Arteriography and Vasculography– Breast Imaging


Enhanced CTEnhanced CT

CT has been enhanced in a manner very similar to that done for MR last year.

Instead of one object per slice, use multi-frame images Support segmenting the study into more conveniently

sized objects. Support flexible structuring of slice descriptions and slice

parameters.

There is a CT and MR taskforce To avoid compatibility problems in the field To simplify the upgrade process To help ensure that a hospital can upgrade all of their

equipment in a synchronized manner To reduce development costs for vendors


Ophthalmic PhotographyOphthalmic Photography

Supports the many different forms of traditional ophthalmic photography, both still and moving, with and without contrast.– Fundus Photography, – Bio-microscopy (slit lamp)– External Photography

Added generic support for describing stereo pairs for stereo viewing. All ophthalmic objects are potentially stereo components.


MPEG-2 and Visible Light MPEG-2 and Visible Light VideoVideo

The MPEG-2 standard for compressed video has been added as a transfer syntax. This syntax is presently limited to the broadcast television parameters, not other higher resolution configurations.

Suitable for replacing videotape capture from standard television cameras.

Defined a generic endoscopy object that supports this transfer syntax. This object is expected to be used as a functional replacement for the present video camera and video tape used during endoscopic procedures.


Media Related AdditionsMedia Related Additions

USB and Flash removable media Generic removable USB devices. Compact Flash SD Flash

Media Creation Services Similar to Print Services, but used to create

CD’s and DVD’s.


Relevant Patient Information Relevant Patient Information QueryQuery

Simple Interface to HIS or other services for important patient information such as allergies.

Intended for use in modalities and other equipment that is already DICOM enabled.


Spatial RegistrationSpatial Registration

Defines spatial relationships between multiple DICOM image objects. E.g.:

Mapping PET and CT images to a common coordinate system.

Mapping MR and CT images to a common coordinate system.

Captures fiducial marker information: Location of fiducial marks on images Matching of fiducial marks between images


Instance Availability Instance Availability NotificationNotification

Used by PACS, RIS, and other systems to coordinate scheduling of activity with the transfer of image data between systems.

Recipient of images will notify other systems after image data transfer is complete.

Prior DICOM messages had a way for a modality to notify the managing system that it was sending images to the archive, but lacked a way for the archive to indicate that all the images had arrived. The result was excessive queries by workstations asking the archive whether images had arrived yet.


Configuration ManagementConfiguration Management Defines proper use of DNS, DHCP, and NTP for

automatic assignment of IP addresses and automatic maintenance of correct time.

Defines an LDAP information structure that describes the DICOM application configuration for a network.

This is different from the other extensions in that it is intended to improve administration and network operations.

Quicker installation, maintenance, and upgrades Easier reconfiguration of networks and facilities More potential for customer performed maintenance More potential for automatic and semi-automatic new equipment

installation. Consistent time on images, reports, and user displays on all

systems.


Web Access to DICOM Web Access to DICOM ObjectsObjects

This is a joint effort together with ISO and is issued as both part of DICOM and an ISO standard

A URL format is defined so that a web query from a web browser can be supported by a DICOM aware server. URL parameters indicate the desired patient, study, image, frame, and area of the frame that is to be returned as a JPEG image.

Similar URL parameters are defined for some other operations on DICOM information.


Work with other standardsWork with other standards

HL7 CDA references from DICOM DICOM SR extensions to ease transcoding to

CDA Encapsulation of PDF Objects


DICOM 2005 ConferenceDICOM 2005 Conference

26-28 September, 2005Budapest, Hungary– Tutorials– Plans and Status of current work– Vision for the future

http://medical.nema.org/dicom/DCW-2005


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What’s New in DICOM 2004 Robert Horn Agfa Healthcare Chair DICOM WG-06 (Base Standard)

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