Whats New in DICOM 2004

1
Whats New in DICOM 2004

• Robert Horn
• Agfa Healthcare
• Chair DICOM WG-06
• (Base Standard)

2
New in the 2004 DICOM Publication

• 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

3
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

4
New 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

5
Enhanced 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

6
Ophthalmic 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.

7
MPEG-2 and Visible Light Video

• 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.

8
Media 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
  CDs and DVDs.

9
Relevant Patient Information Query

• 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.

10
Spatial 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

11
Instance Availability Notification

• 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.

12
Configuration 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.

13
Web Access to DICOM Objects

• 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.

14
Work with other standards

• HL7 CDA references from DICOM
• DICOM SR extensions to ease transcoding to CDA
• Encapsulation of PDF Objects

15
DICOM 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

16
Next Presentations

• Security Extensions
• Display Extensions
• Standard API for plugins, etc.