| | DICOM Terms and Abbreviations |
ACR: American College of Radiology; Initiated the DICOM standardization effort in the early 80s.
ACR-NEMA: Predecessor of the DICOM standard defined by the ACR and NEMA; two versions were defined 1.0 and 2.0.
ACR-NEMA: American College of Radiology - National Electrical Manufacturers Association
ACSE: Association Control Service Element, defined by OSI, which is used by DICOM to negotiate an Association.
AE: Abbreviation for a Value Representation: Application Entity. For details see here.
AE: Application
Entity; a software process which
implements DICOM, most implementations
use multiple AEs when implementing
multiple Service Classes.
Requires a unique
identification "AE Title", typically
set up during installation by which AEs
identify themselves at application
level.
Can be a program, a piece of a program,
or a group of programs that cooperate
with one another. In an abstract sense,
it can be viewed across the network as a
single collective entity.
ANSI: American National Standards Institute
AP: Application Profile.
AS: Abbreviation for a Value Representation: Age String. For details see here.
AS: Abbreviation for a type of modality: Angioscopy.
ASCII: American Standard Code for Information Interchange; known for standardizing codes for text.
AT: Abbreviation for a Value Representation: Attribute Tag. For details see here.
ATM: Asynchronous Transfer Mode
Abstract Syntax: Rules that
are negotiated for exchanging objects,
specified by the SOP Class.
Same as the SOP class
(service/object pair). A
combination of the service class and the
type of information object upon which it
should operate.
Application Context: The context, which is negotiated between AEs. For DICOM, this is always "DICOM 3.0".
Association: A connection
between AEs for DICOM
exchange. Length of association is
undefined, but typically specified in
the DICOM Conformance statement of a
device, It could last for the duration
of exchanging a complete image study.
Context for communication.
Attribute: Attributes are the
components of an object (IOD), describing its
properties. Examples of attributes are
Patient Name attribute, Patient ID, etc.
describing an image object.
A
property of an information object. It
has a name and a value. Both that are
independent of any encoding scheme.
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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 |