The C-GET-RQ Message contains fields as defined in Table 9.3-6. Each field shall conform to DICOM encoding and Value Representation as defined in PS 3.5. Fields are required as specified in the C-GET service definition unless otherwise noted in Table 9.3-6. Fields not specified in the C-GET service definition but present in Table 9.3-6 are required by the DIMSE-C protocol.
Table 9.3-6 C-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.|
|Affected SOP Class UID||(0000,0002)||UI||1||SOP Class UID associated with this 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 0010H for the C-GET-RQ Message.|
|Message ID||(0000,0110)||US||1||Implementation-specific value which distinguishes this Message from other Messages.|
|Priority||(0000,0700)||US||1||The priority shall be set to one of the following values: LOW = 0002H MEDIUM = 0000H HIGH = 0001H|
|Command Data Set Type||(0000,0800)||US||1||This field indicates that a Data Set is present in the Message. It shall be set to any value other than 0101H (Null).|
|Identifier||(no tag)||⎯||⎯||A Data Set that encodes attributes providing status information about the C-GET operation. See Section 188.8.131.52.5.|
Note: Implementations which require compatibility to previous versions of this Standard must set the Command Data Set Type (0000,0800) Field to 0102H (Identifier).