Ontology Summit 2013: Ontology Evaluation Across the Ontology Lifecyle
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DICOM and Image Ontology
Image Ontology Workshop 2006Stanford University
Anand Kumar MD, PhD, MBA
IFOMIS, Univ. of Saarland, Germany.Siemens Medical Solutions, Germany.
BIOMEDICAL
ONTOLOGY
BIOMEDICAL
ONTOLOGY
Digital Imaging and Communications in Medicine
DICOM
Joint standard from American College of Radiology and National Electronic Manufacturer’s Association
A standard method for transferring images and associatedInformation between devices manufactured by vendors
Addresses the needs particularly of Radiologists
BIOMEDICAL
ONTOLOGY
Information Object (Class):An abstraction of a real information entity (e.g., CT Image, Structured Report, etc.)
which is acted upon by one or more DICOM Commands
Synonym of Information Object Definition (IOD)
Basic definitions
Service Class:A structured description of a service which is supported
by cooperating DICOM Applications using specific DICOM Commands acting on a specific class of Information Object.
BIOMEDICAL
ONTOLOGY
Composite Information Object Class:May additionally include Attributes which
are related to but not inherent in the real-world entity.E.g. Patient Name together with
Computed Tomography Image Information Object Class
Information Object Classes
Normalized Information Object Class:Includes only those Attributes inherent
in the real-world entity represented.
Expresses the communication requirements of images where image data and
related data needs to be closely associated.
BIOMEDICAL
ONTOLOGY
Entity and Relationship
BIOMEDICAL
ONTOLOGY
General Study Module
Has-study-dateHas-study-time
Has-referring-physicianHas-accession-number
Has-physicians-of-recordHas-physicians-reading-study
Has-reference-studyHas-procedure-code
DICOM Relations and Attributes (Extra)
BIOMEDICAL
ONTOLOGY
General Series Module
Has-modalityHas-laterality
Has-series-dateHas-series-time
Has-performing-physicianHas-protocolHas-operator
Has-reference-performed-stepHas-related-series
Has-body-part-examinedHas-patient-position
Has-smallest-pixel-value-in-seriesHas-Largest-pixel-value-in-series
Has-Imaging-Service-RequestHas-performed-procedure-step
Has-performed-procedure-step-start-timeHas-performed-procedure-step-start-date
Has-performed-protocol-code
DICOM Relations and Attributes (Extra)
BIOMEDICAL
ONTOLOGY
General Image Module
Has-patient-orientationHas-content-dateHas-content-timeHas-image-type
Has-Acquisition-dateHas-Acquisition-time
Has-referenced-image-sequenceHas-derivation
Has-source-imageHas-referenced-waveform
Has-images-in-acquisition (could be put in the acquisition process module)Has-quality-control-imageHas-burned-in-annotation
Has-lossy-image-compressionHas-lossy-image-compression-ratio
DICOM Relations and Attributes (Extra)
BIOMEDICAL
ONTOLOGY
Image Pixel ModuleHas-samples-per-pixel
Has-photometric-interpretationHas-rows
Has-columnsHas-bits-allocated
Has-bits-storedHas-high-bit
Has-pixel-representationHas-pixel-data
Has-planar-configurationHas-pixel-aspect-ratio
Has-smallest-image-pixel-valueHas-largest-image-pixel-value
Has-red-palette-color-lookup-table-descriptorHas-blue-palette-color-lookup-table-descriptor
Has-green-palette-color-lookup-table-descriptorHas-red-palette-color-lookup-table-dataHas-blue-palette-color-lookup-table-data
Has-green-palette-color-lookup-table-data
DICOM Relations and Attributes (Extra)
BIOMEDICAL
ONTOLOGY
Mutiframe Images:
Large number of images can be sent as one objectAll attributes equal to all images or their groups sent once
Modality independent functional groupsModality dependent functional groups
Multiframe Images
BIOMEDICAL
ONTOLOGY
ImageSeriesStudy
Patient Visit
Secondary CaptureImage Based ReportingImage Based Diagnosis
RadiotherapyClinical Trials
What should Image Ontology Cover?
BIOMEDICAL
ONTOLOGY
DICOM Structured Reporting
Template Specifications which include: Concept Name,Requirement, Value Type, Value Multiplicity, Value Set
Restriction, Relationship Types
BIOMEDICAL
ONTOLOGY
BIOMEDICAL
ONTOLOGY
Examples
ReportingDICOM Image-Related
Object
BIOMEDICAL
ONTOLOGY
Advice
Cover the depth to the extent DICOM doesUse DICOM types
Reclassify themProvide correct relations
FMA is a reference ontology tooFMA is not small
DICOM and Image Ontology
Image Ontology Workshop 2006Stanford University
Anand Kumar MD, PhD, MBA
IFOMIS, Univ. of Saarland, Germany.Siemens Medical Solutions, Germany.
BIOMEDICAL
ONTOLOGY