dicom sr requirements applications benefits w. dean bidgood, jr., m.d., m.s. sr data solutions, inc....
TRANSCRIPT
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DICOM SR• Requirements
• Applications
• BenefitsW. Dean Bidgood, Jr., M.D., M.S.
SR Data Solutions, Inc.
www.srdata.com
(919) 806-2220
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No report is unstructured.
But not all reports are effective …..
“A picture is worth a thousand words”
Knowledge is valuable
Don’t waste it.
It’s time for DICOM SR
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With SR, Useful Structure is Available
• User decides how much “structure” to use
… where required
• But also the degree of OPTIONALITY
• And the MODE OF EXPRESSION
and precisely controls (with templates) not only the type of content …
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SR Distinctives• DICOM base
• Availability (trading partners)
• The model is the message
• Simple entry point
• Practical approach to codes and terminology
• Supports high-end applications
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Simple Entry Point
Title and text
Links to images
…. But also supports advanced applications
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DICOM Environment
• Unique object identifiers
• Persistent objects
• Workflow context
• Binary data types
• Consistent soft-copy display
• Print management
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SR Highlights
• Support measurements by imaging devices
Achieved in DICOM SR
• Integrate fully into the DICOM environment Achieved in DICOM SR
• Enable collaborative reporting by any number of persons or devices
Achieved in DICOM SR
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SR Highlights
• Enable links to regions of interest within images and waveforms
Achieved in DICOM SR
• Enable links to key images of any case Achieved in DICOM SR
• Template-driven content and structure
Achieved in DICOM SR
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Customization Permitted For
• User interface
• Presentation
• Database implementation
SR PROMOTES INNOVATION AND DEFERS TO INDUSTRY STANDARDS IN THESE AREAS
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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, …..
• 1960’s Lab, Radiology (1969), Early SQL …• 1970’s Hopkins (76), ACR-NEMA, Early SNOMED
• 1980’s OBUS (82), SGML (86), HL7, UMLS, …
• 1990’s UltraSTAR, DICOM (93), WWW, CMT, DRML
• 2000 NEMA SR Workshop: rollout of DICOM SR
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SR Applications
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Ultrasound Measurements
Immediate Need
Generate with image
LOINC codes
Spatial Coordinates
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CAD Device
Emerging application
Generate from image
BIRADS codes
Spatial coordinates
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Device Output
• Predictable content and meaning
• Measurements, codes, text
• Coordinates
• Inferences
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Numeric Measurement• Unambiguous description
• LOINC code -- measurement name
• SNOMED code -- units
Concept Name
( LOINC )
Numeric Value
Units
( SNOMED )
NUM Content Item
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Inference TreeM am m og rap h y C A D F in d in g s
D etec ted F ea tu re D etec ted F ea tu re D etec ted F ea tu re
C om p os ite F ea tu reInferred FromInferred From
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HIS/CIS
PatientDemographics
XA
IVUS
HemoMonitoring
• Images• Reports• Measurements
• Images• Reports• Audio• Measurements
• Waveforms• Reports• Measurements• Procedure Log
• Lab Reports• Hx/Px Information
Structured Reporting for the Cath Lab
Integrated Structured Report
Author: Thomas Kennedy
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F i d u c i a l 1 a t ( p i x e l 1 7 2 , 2 0 1 )
F i d u c i a l 2 a t ( p i x e l 2 3 7 , 2 9 0 )
R - w a v e p e a k a t ( s a m p l e 7 7 2 )
F i g u r e 1 - B a s i c A n n o t a t i o n
R-wave peak at (time 10:03.296)
10:03.4010:03.36
10:03.3210:03.28
10:03.2410:03.20
10:03.1610:03.12
10:03.0810:03.04
10:03.00
10:03.00 10:03.50
Multi-frame (cine)pixel data Waveform data
F i g u r e 2 - A n n o t a t i o n o f a T e m p o r a l R O I i n M u l t i - f r a m e I m a g e a n d W a v e f o r m ( s i n g l e S O PI n s t a n c e )
Content IntegrationAuthor: Harry Solomon
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Miscellaneous Documents
• Teaching files
• Intradepartmental messages
• Quality control (e.g. densitometry, floods, ….)
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Interpretation
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Link Features to Description
New nodulesuperimposedwith rightfourth rib
Free air
10% PTX
Cavitation
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Who’s talking?
Who said what
Persons and/or devices
DIRECT or QUOTED
OBSERVER CONTEXT
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How good is the evidence?
Source (Study Instance UID)
CURRENT or OTHER
Audit trail
PROCEDURE CONTEXT
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What are they talking about?
Patient? Data? Procedure?
Mother? Twin A? Twin B?
Slide: block
OBSERVATION SUBJECT
, cut , stain , re-stain
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What is being said?
Document title
Heading for type of content
Concept name (coded label)
OBSERVATION CATEGORY
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Anywhere in the document
Who’s talking
Source of evidence
Subject and scope talked about
Category of information
OBSERVATION CONTEXT
WE KNOW
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Accountability
Referring physician and request
Evidence checklist: CURRENT, OTHER
Status (COMPLETE, VERIFIED)
Verifying Observer, organization
ADMINISTRATIVE CONTEXT
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Delivery to Point of Care
• DICOM SR Documents in database• DICOM to PACS workstations• Web to enterprise
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Analysis
Scientific research
Clinical trials
Performance evaluation
Education and training
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Databaseable Reporting*
• Share knowledge
• Evaluate
Enhance understanding in consultation
Say it once!
Increase effectiveness
Increase efficiency
Improve outcomes
Chuck Thomas coined this term
Re-use clinical findings for training