This section specifies the protocol necessary to perform the set of DIMSE-C operations. The Value Representations (VR) specified in the following tables shall be encoded as defined in PS3.5.
The information necessary for the C-STORE request and indication DIMSE-C primitives are conveyed in the C-STORE-RQ Message. The information necessary for the C-STORE response and confirmation DIMSE-C primitives are conveyed in the C-STORE-RSP Message.
The C-STORE-RQ Message contains fields as defined in Table 9.3-1. Each field shall conform to DICOM encoding and Value Representation as defined in PS3.5. Fields are required as specified in the C-STORE service definition unless otherwise noted in Table 9.3-1. Fields not specified in the C-STORE service definition but present in Table 9.3-1 are required by the DIMSE-C protocol.
Table 9.3-1. C-STORE-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 of the SOP Instance to be stored. |
|
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 0001H for the C-STORE-RQ Message. |
|
Message ID |
(0000,0110) |
US |
1 |
Implementation-specific value. It 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). |
|
Affected SOP Instance UID |
(0000,1000) |
UI |
1 |
Contains the UID of the SOP Instance to be stored. |
|
Move Originator Application Entity Title |
(0000,1030) |
AE |
1 |
Contains the DICOM AE Title of the DICOM AE that invoked the C-MOVE operation from which this C-STORE sub-operation is being performed. |
|
Move Originator Message ID |
(0000,1031) |
US |
1 |
Contains the Message ID (0000,0110) of the C-MOVE-RQ Message from which this C-STORE sub-operations is being performed. |
|
Data Set |
(no tag) |
- |
- |
Application-specific Data Set. |
The C-STORE-RSP Message contains fields as defined in Table 9.3-2 and in Annex C. Each field shall conform to DICOM encoding and Value Representation as defined in PS3.5 of the DICOM Standard. Fields are required as specified in the C-STORE service definition unless otherwise noted in Table 9.3-2. Fields not specified in the C-STORE service definition but present in Table 9.3-2 are required by the DIMSE-C protocol.
Table 9.3-2. C-STORE-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 |
Contains the SOP Class of the SOP Instance stored. |
|
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 8001H for the C-STORE-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-STORE-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 (Null). |
|
Status |
(0000,0900) |
US |
1 |
The value of this field depends upon the status type. Annex C defines the encoding of the status types defined in the service definition. |
|
Affected SOP Instance UID |
(0000,1000) |
UI |
1 |
Contains the UID of the SOP Instance stored. |
The C-STORE procedures are initiated by the invoking DIMSE-service-user issuing a C-STORE request primitive. On receipt of the C-STORE request primitive the DIMSE-C protocol machine shall:
construct a Message conveying the C-STORE-RQ
send the Message using the P-DATA request service (see 8.1)
On receipt of a Message conveying a C-STORE-RQ the DIMSE-C protocol machine shall issue a C-STORE indication primitive to the performing DIMSE-service-user.
On receipt of the C-STORE response primitive, issued by the performing DIMSE-service-user, the DIMSE-C protocol machine shall:
construct a Message conveying the C-STORE-RSP
send the Message using the P-DATA request service (see 8.1)
On receipt of a Message conveying a C-STORE-RSP the DIMSE-C protocol machine shall issue a C-STORE confirmation primitive to the invoking DIMSE-service-user, thus completing the C-STORE procedure.
The performing DIMSE-service-user may return a C-STORE-RSP with the status of Failed or Refused before the complete C-STORE-RQ request Message has been completely transmitted by the invoking DIMSE-service-user (this is called an early failed response). Upon receipt of this Failed or Refused C-STORE-RSP the invoking DIMSE-service-user may terminate the Message before it is completely sent (i.e., set the Last Fragment bit to 1 in a Data PDV for this Message, see Annex F). Following this, it may invoke another operation or notification. It is a protocol violation for an invoking DIMSE-service-user to set the Last Fragment bit to 1 before a C-STORE-RQ Message has been completely transmitted if it has not received a Failed or Refused C-STORE-RSP to that request.
When an Association is operating in asynchronous mode, it is possible for an invoking DIMSE-service-user to transmit several Messages before a response. Therefore, while sending a Message it may receive a response to a previously transmitted Message. In this case this response is not an early failed response because the related Message has already been sent.