The C-CANCEL-FIND-RQ Message contains fields as defined in Table 9.3-5. Each field shall conform to DICOM encoding and Value Representation as defined in PS 3.5. Fields are required as specified in the C-FIND service definition unless otherwise noted in Table 9.3-5. Fields not specified in the C-FIND service definition but present in Table 9.3-5 are required by the DIMSE-C protocol.
Table 9.3-5 C-CANCEL-FIND-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.|
|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 0FFFH for the C-CANCEL-FIND-RQ 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-FIND-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.|