10.3.2.1 N-GET-RQ

The N-GET-RQ Message contains fields as defined in Table 10.3-3. Each field shall conform to DICOM encoding and Value Representation as defined in PS 3.5. Fields are required as specified in the N-GET service definition unless otherwise noted in Table 10.3-3. Fields not specified in the N-GET service definition but present in Table 10.3-3 are required by the DIMSE-N protocol.

Table 10.3-3 N-GET-RQ MESSAGE FIELDS

Message Field Tag VR VM Description of Field
Command Group Length (0000,0000) UL 1 The even number of bytes from the end of the value field to the beginning of the next group.
Requested SOP Class UID (0000,0003) UI 1 SOP Class UID of the SOP Instance for which Attribute Values are to be retrieved.
Command Field (0000,0100) US 1 This field distinguishes the DIMSE-N operation conveyed by this Message. The value of this field shall be set to 0110H for the N-GET-RQ Message.
Message ID (0000,0110) US 1 Implementation-specific value which distinguishes this Message from other Messages.
Command Data Set Type (0000,0800) US 1 This field indicates that no Data Set shall be present in the Message. This field shall be set to the value of 0101H).
Requested SOP Instance UID (0000,1001) UI 1 Contains the UID of the SOP Instance for which Attribute Values are to be retrieved.
Attribute Identifier List (0000,1005) AT 1-n This field contains an Attribute Tag for each of the n Attributes applicable to the N-GET operation.