NEMA 300 : 1988

Foreword
Scope
History
  Purpose
  Rationale
  Validation
  Evolution of the ACR-NEMA standard
  Overview of this document
  Compatibility of versions
1 Referenced standards and definitions
     Referenced standards
     Definitions
2 Technical overview of the standard
     Introduction
     Functional description
       Hardware
       Protocol elements
       Interface location
     Comparison with the ISO-OSI model
       Corresponding layers
         Physical layer
         Data link layer
         Transport/network layer
         Session layer
         Presentation and application layers
     Summary of protocol and data structures
3 Performance specifications
     Introduction
     Error rates
     Rate of data transfer
     Environmental specifications
     Minimum necessary functions for compatibility
4 Message format
     Introduction
     Message
     Groups
     Data set types
     Data elements
     Length
     Value
       ASCII values
       Binary values
       Multiple values
     Data element types
       Type 1 data elements
       Type 1D (default) data elements
       Type 2 data elements
       Type 2D (default) data elements
       Type 3 data elements
       Data elements in optional groups
     Shadow groups
     Examples
5 Message content
     Introduction and overview
     Images
       Hierarchical relationships of sets of images
       Image identification
         Original image identification
         Modified image identification
         Composite image identification
       Image coordinate system
       Patient orientation
       Coordinate systems
         Introduction
         Axis definition
         Origin definition
         Image location and orientation
         Localizer images
         Other location information
       Pixel bit fields
       Image geometry
       Image display
       Display devices
     Overlays and graphics
       Definitions
       Overlay representations
       Regions of interest
     Text
     Other
     Display devices
       Message set ID
       Text format ID
6 Command structure
     Introduction
       Status
     Commands for normal processing
       SEND commands
         SEND command to display devices
       FIND commands
       GET commands
       MOVE commands
         MOVE command to a display device
       DIALOG commands
     Command for exception processing - cancel
       CANCEL as applicable to commands in general
       CANCEL as applicable to specific commands
         Introduction
         SEND
         GET
         FIND
         MOVE
     Command for verification-echo
7 Hardware and protocols
     Introduction
     Physical layer electrical specifications
       Definitions
       Signal definitions
       Signal electrical characteristics
         Driver and receiver characteristics
         Cabling and termination
         Physical connectors
         Signal timing specifications
     Physical layer and physical protocol
       Introduction
       Physical protocol state model
         Interface arbitration for data transmission
8 Data exchange protocol
     Introduction
     Data link protocol
       Frame descriptor word fields
         Frame type field
         Frame descriptor parameter field
       Frame check sequence
     Transport/network protocol
       Introduction
       Packet descriptor word
         Channel number field
         Default channel numbers
         Packet type field
         Service class field
       Block sequence number
       Establishing channels
     Session layer protocol
       Introduction
       Connection control word
       Destination/source fields
       Channel 0
       Additional services of session protocol
         Primary imaging equipment
         Dedicated imaging equipment
         Network interface units
     Flow control
       Physical layer
       Data link layer
       Transport/network layer
       Session layer and message level
     Exception handling
       Physical layer
       Data link layer
       Transport/network layer
       Session layer and message level
9 Examples of sending and receiving messages
     Introduction
     Sending messages
       Opening a channel and establishing a connection
       Sending command packets
       Sending data packets
       Message response
       Closing a channel and dissolving a connection
     Receiving messages
       Receiving an open channel request and connect
        request
       Receiving command packets
       Message response
     Sending from dedicated equipment using minimum
      protocol
     Using the DIALOG command
10 Description of data elements
     Introduction
Appendices
A Maximum transfer rate measurement
B Example of a typical message
C Hierarchical grouping of images
D Explanation of patient orientation
E Explanation of packing options
F Lookup table example
G Command examples
H Examples of the DIALOG command
I Examples of using display device data elements for
   control of a laser camera

Gives a minimum set of necessary attributes for an imaging device interface to communicate successfully with other devices that also meet the specifications.