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DICOM SR

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Title: DICOM SR Author: Dean Bidgood Last modified by: Dean Bidgood Created Date: 3/28/2000 4:15:54 PM Document presentation format: On-screen Show – PowerPoint PPT presentation

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Title: DICOM SR


1
DICOM SR
  • Requirements
  • Applications
  • Benefits

W. Dean Bidgood, Jr., M.D., M.S.
SR Data Solutions, Inc. www.srdata.com (919)
806-2220
2
No report is unstructured.
But not all reports are effective ..
A picture is worth a thousand words Knowledge
is valuable Dont waste it.
Its time for DICOM SR
3
With SR, Useful Structure is Available
  • User decides how much structure to use

and precisely controls (with templates) not only
the type of content
  • But also the degree of OPTIONALITY
  • And the MODE OF EXPRESSION

where required
4
SR Distinctives
  • DICOM base
  • Simple entry point
  • Supports high-end applications
  • Practical approach to codes and terminology
  • Availability (trading partners)
  • The model is the message

5
Simple Entry Point
Title and text Links to images . But also
supports advanced applications
6
DICOM Environment
  • Unique object identifiers
  • Persistent objects
  • Workflow context
  • Binary data types
  • Print management
  • Consistent soft-copy display

7
SR Highlights
  • Integrate fully into the DICOM environment
  • Achieved in DICOM SR
  • Support measurements by imaging devices
  • Achieved in DICOM SR
  • Enable collaborative reporting by any number of
    persons or devices
  • Achieved in DICOM SR

8
SR Highlights
  • Enable links to key images of any case
  • Achieved in DICOM SR
  • Enable links to regions of interest within images
    and waveforms
  • Achieved in DICOM SR
  • Template-driven content and structure
  • Achieved in DICOM SR

9
Customization Permitted For
  • Presentation
  • User interface
  • Database implementation

SR PROMOTES INNOVATION AND DEFERS TO INDUSTRY
STANDARDS IN THESE AREAS
10
Structured Documentation
  • Forty years of progress .

, Lindberg, Hall, Pendergrass, Barnett,
Greenes, Wheeler, Simborg, Gitlin, Clayton,
McDonald, Weed, Shortliffe, Hammond, Stead, Cote,
Sowa, Bernauer, McCray, Johnson, Rector, Kuhn,
Cimino, Huff, Campbell, Bell, Kahn, Poon,
Friedman, ..
  • 1960s Lab, Radiology (1969), Early SQL
  • 1970s Hopkins (76), ACR-NEMA, Early SNOMED
  • 1980s OBUS (82), SGML (86), HL7, UMLS,
  • 1990s UltraSTAR, DICOM (93), WWW, CMT, DRML
  • 2000 NEMA SR Workshop rollout of DICOM SR

11
SR Applications
12
Ultrasound Measurements
Immediate Need
Generate with image
LOINC codes
Spatial Coordinates
13
CAD Device
Emerging application
Generate from image
BIRADS codes
Spatial coordinates
14
Device Output
  • Predictable content and meaning
  • Measurements, codes, text
  • Coordinates
  • Inferences

15
Numeric Measurement
  • Unambiguous description
  • LOINC code -- measurement name
  • SNOMED code -- units

Concept Name ( LOINC )
Units ( SNOMED )
Numeric Value
NUM Content Item
16
Inference Tree
17
Author Thomas Kennedy
18
Content Integration
Author Harry Solomon
19
Miscellaneous Documents
  • Intradepartmental messages
  • Teaching files
  • Quality control (e.g. densitometry, floods, .)

20
Interpretation
21
Link Features to Description
New nodule superimposed with right fourth rib
10 PTX
Cavitation
Free air
22
Whos talking?
Who said what
Persons and/or devices
DIRECT or QUOTED
OBSERVER CONTEXT
23
How good is the evidence?
Source (Study Instance UID)
CURRENT or OTHER
Audit trail
PROCEDURE CONTEXT
24
What are they talking about?
Patient? Data? Procedure?
Mother? Twin A? Twin B?
Slide block
, cut
, stain
, re-stain
OBSERVATION SUBJECT
25
What is being said?
Document title
Heading for type of content
Concept name (coded label)
OBSERVATION CATEGORY
26
Anywhere in the document
WE KNOW
Whos talking
Source of evidence
Subject and scope talked about
Category of information
OBSERVATION CONTEXT
27
Accountability
Referring physician and request
Status (COMPLETE, VERIFIED)
Verifying Observer, organization
Evidence checklist CURRENT, OTHER
ADMINISTRATIVE CONTEXT
28
Delivery to Point of Care
  • DICOM SR Documents in database
  • DICOM to PACS workstations
  • Web to enterprise

29
Analysis
Scientific research
Education and training
Clinical trials
Performance evaluation
30
Databaseable Reporting
Chuck Thomas coined this term
  • Share knowledge

Enhance understanding in consultation
Increase effectiveness
Say it once!
Re-use clinical findings for training
Increase efficiency
  • Evaluate

Improve outcomes
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