Материал: part08

DICOM PS3.8 2020a - Network Communication Support for Message Exchange​

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Table 9-18. Presentation Context Item Fields​

Item bytes​

Field name​

Description of field​

1​

Item-type​

21H​

2​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value when​

received.​

3-4​

Item-length​

This Item-length shall be the number of bytes from the first byte of the following field to​

the last byte of the Transfer Syntax Sub-Item. It shall be encoded as an unsigned binary​

number.​

5​

Presentation-context-ID​

Presentation-context-ID values shall be odd integers between 1 and 255, encoded as​

an unsigned binary number. For a complete description of the use of this field see​

Section 7.1.1.13.​

6​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value when​

received.​

7​

Result/Reason​

This Result/Reason field shall contain an integer value encoded as an unsigned binary​

number. One of the following values shall be used:​

0 - acceptance​

1 - user-rejection​

2 - no-reason (provider rejection)​

3 - abstract-syntax-not-supported (provider rejection)​

4 - transfer-syntaxes-not-supported (provider rejection)​

8​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value when​

received.​

9-xxx​

Transfer syntax sub-item​

ThisvariablefieldshallcontainoneTransferSyntaxSub-Item.WhentheResult/Reason​

fieldhasavalueotherthanacceptance(0),thisfieldshallnotbesignificantanditsvalue​

Item bytes​

Field name​

Description of field​

1​

Item-type​

40H​

2​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value when​

received.​

3-4​

Item-length​

This Item-length shall be the number of bytes from the first byte of the following field​

to the last byte of the Transfer-syntax-name field. It shall be encoded as an unsigned​

binary number.​

5-xxx​

Transfer-syntax-name​

ThisvariablefieldshallcontaintheTransfer-syntax-nameproposedforthispresentation​

context. A valid Transfer-syntax-name shall be encoded as defined in Annex F. For a​

description of the use of this field see Section 7.1.1.14. Transfer-syntax-names are​

structured as UIDs as defined in PS3.5 (see Annex B for an overview of this concept).​

DICOM Transfer-syntax-names are registered in PS3.5.​

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DICOM PS3.8 2020a - Network Communication Support for Message Exchange​

Item bytes​

Field name​

Description of field​

1​

Item-type​

50H​

2​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value when​

received.​

3-4​

Item-length​

This Item-length shall be the number of bytes from the first byte of the following​

field to the last byte of the User-data-information field(s). It shall be encoded as​

an unsigned binary number.​

5-xxx​

User-data​

This variable field shall contain User-data sub-items as defined by the DICOM​

ApplicationEntity.Thestructureandcontentofthesesub-itemsisdefinedinAnnex​

D.​

Table 9-21. ASSOCIATE-RJ PDU Fields​

PDU bytes​ Field name​

Description of field​

1​

PDU-type​

03H​

2​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value when received.​

3-6​

PDU-length​

This PDU-length shall be the number of bytes from the first byte of the following field to the last​

byteoftheReason/Diag.field.InthecaseofthisPDU,itshallhavethefixedvalueof00000004H​

encoded as an unsigned binary number.​

7​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value when received.​

8​

Result​

This Result field shall contain an integer value encoded as an unsigned binary number. One of​

the following values shall be used:​

1

- rejected-permanent​

2

- rejected-transient​

9​

Source​

This Source field shall contain an integer value encoded as an unsigned binary number. One of​

the following values shall be used:​

1

- DICOM UL service-user​

2

- DICOM UL service-provider (ACSE related function)​

3

- DICOM UL service-provider (Presentation related function)​

DICOM PS3.8 2020a - Network Communication Support for Message Exchange​

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PDU bytes​ Field name​

Description of field​

10​ Reason/Diag.​

This field shall contain an integer value encoded as an unsigned binary number. If the Source​

field has the value (1) "DICOM UL service-user", it shall take one of the following:​

PDU bytes​

Field name​

Description of field​

1​

PDU-type​

04H​

2​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value​

when received.​

3-6​

PDU-length​

ThisPDU-lengthshallbethenumberofbytesfromthefirstbyteofthefollowing​

field to the last byte of the variable field. It shall be encoded as an unsigned​

binary number.​

7-xxx​

Presentation-data-value Item(s)​This variable data field shall contain one or more Presentation-data-value​

Items(s). For a complete description of the use of this field see Section 9.3.5.1​

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DICOM PS3.8 2020a - Network Communication Support for Message Exchange​

Item bytes​

Field name​

Description of field​

1-4​

Item-length​

This Item-length shall be the number of bytes from the first byte of the following field​

to the last byte of the Presentation-data-value field. It shall be encoded as an​

unsigned binary number.​

5​

Presentation-context-ID​

Presentation-context-ID values shall be odd integers between 1 and 255, encoded​

as an unsigned binary number. For a complete description of the use of this field​

see Section 7.1.1.13.​

6-xxx​

Presentation-data-value​

This Presentation-data-value field shall contain DICOM message information​

(command and/or Data Set) with a message control header. For a complete​

description of the use of this field see Annex E.​

PDU bytes​

Field name​

Description of field​

1​

PDU-type​

05H​

2​

Reserved​

Thisreservedfieldshallbesentwithavalue00Hbutnottestedtothisvaluewhen​

received.​

3-6​

PDU-length​

This PDU-length shall be the number of bytes from the first byte of the following​

field to the last byte of the Reserved field. In the case of this PDU, it shall have​

the fixed value of 00000004H encoded as an unsigned binary number.​

7-10​

Reserved​

This reserved field shall be sent with a value 00000000H but not tested to this​

value when received.​

PDU bytes​

Field name​

Description of field​

1​

PDU-type​

06H​

2​

Reserved​

Thisreservedfieldshallbesentwithavalue00Hbutnottestedtothisvaluewhen​

received.​

3-6​

PDU-length​

This PDU-length shall be the number of bytes from the first byte of the following​

field to the last byte of the Reserved field. In the case of this PDU, it shall have​

the fixed value of 00000004H encoded as an unsigned binary number.​

7-10​

Reserved​

This reserved field shall be sent with a value 00000000H but not tested to this​

value when received.​

DICOM PS3.8 2020a - Network Communication Support for Message Exchange​

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Table 9-26. A-ABORT PDU Fields​

PDU bytes​

Field name​

Description of field​

1​

PDU-type​

07H​

2​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value when received.​

3-6​

PDU-length​

This PDU-length shall be the number of bytes from the first byte of the following field to the​

last byte of the Reserved field. In the case of this PDU, it shall have the fixed value of​

00000004H encoded as an unsigned binary number.​

7​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value when received.​

8​

Reserved​

This reserved field shall be sent with a value 00H but not tested to this value when received.​

9​

Source​

This Source field shall contain an integer value encoded as an unsigned binary number. One​

of the following values shall be used:​

0

- DICOM UL service-user (initiated abort)​

1

- reserved​

2

- DICOM UL service-provider (initiated abort)​

10​

Reason/Diag.,​

This field shall contain an integer value encoded as an unsigned binary number. If the Source​

field has the value (2) "DICOM UL service-provider", it shall take one of the following:​

0

- reason-not-specified1 - unrecognized-PDU​

2

- unexpected-PDU​

3

- reserved​

4

- unrecognized-PDU parameter​

5

- unexpected-PDU parameter​

6

- invalid-PDU-parameter value​