DICOM PS3.7 2019a - Message Exchange

9.3.5.2 C-ECHO-RSP

The C-ECHO-RSP Message contains fields as defined in Table 9.3-13 and in Annex C. Each field shall conform to DICOM encoding and Value Representation as defined in PS3.5. Fields are required as specified in the C-ECHO service definition unless otherwise noted in Table 9.3-13. Fields not specified in the C-ECHO service definition but present in Table 9.3-13 are required by the DIMSE-C protocol.

Table 9.3-13. C-ECHO-RSP 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.

Affected SOP Class UID

(0000,0002)

UI

1

SOP Class UID associated with the operation.

Command Field

(0000,0100)

US

1

This field distinguishes the DIMSE-C operation conveyed by this Message. The value of this field shall be set to 8030H for the C-ECHO-RSP Message.

Message ID Being Responded To

(0000,0120)

US

1

Shall be set to the value of the Message ID (0000,0110) field used in associated C-ECHO-RQ Message.

Command Data Set Type

(0000,0800)

US

1

This field indicates that no Data Set is present in the Message and shall be set to a value of 0101H.

Status

(0000,0900)

US

1

Indicates the status of the response. It shall have a value of Success.


DICOM PS3.7 2019a - Message Exchange