| | DICOM Terms and Abbreviations |
ICU: Intensive Care Unit
IE: Information Entity, used to identify a real world object (patient, study, etc.).
IEEE: Institute of Electrical and Electronics Engineering
IHE: Integrating the Health-care Enterprise
IO: Abbreviation for a type of modality: Intra-oral Radiology.
IOD: Information Object Definition, Specification of a DICOM object such as a CT Image object.
IS: Abbreviation for a Value Representation: Integer String. For details see here.
ISDN: Integrated Services Digital Network
ISO: International Standards Organization; defined the 7-layer communications model as well as the ACSE commands.
Image box: The area of a film in which an image appears.
Implementation Class UID: A unique number, which is exchanged during the set up of the Association, by which an AE identifies itself. Each class of AEs have these identical UIDs, for example, each specific CT vendor have the same UID for a specific DICOM implementation.
Implicit VR: Implicit Value Representation, a transfer syntax which is negotiated by which the receiver is assumed ("implied") to know the VR syntax and context. For example, when receiving a Patient Name using Implicit VR, it is assumed that the receiver know the VR rules for that attribute. This is in contrast to the Explicit VR.
Information object: An abstraction of a real information entity (e.g., CT, study, etc.), which is acted upon by one or more DICOM commands.
Information object class: A formal description of an information object which includes a description of its purpose and the attributes it possesses. It does not include values for these attributes.
Information object instance: A representation of an occurrence of a real-world entity, including values for the attributes of the information object class to which the entity belongs.
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Parts of this document are taken (with permission) from Herman Oosterwijk's "DICOM Expert" Cheat Sheet © Copyright OTech, Inc. P.O. Box 260637 Plano, Texas 75026 herman@otechimg.com |