6 DICOM Relational Interface Reference

Application developers who create medical imaging applications without using the Oracle Multimedia ORDDicom object type to store and manage medical image data in relational tables can use the Oracle Multimedia DICOM relational interface to manage their medical image data. In addition, application developers who do not want to migrate their existing medical image applications to use Oracle Multimedia ORDDicom objects can use this relational interface to manage their medical image data.

The DICOM relational interface defines the ORD_DICOM PL/SQL package. This package provides the same features as those provided by the ORDDicom object interface in the relational environment. The DICOM relational interface adds Oracle Multimedia support to medical image data stored in BLOBs and BFILEs, rather than in the ORDDicom object type.

The ORD_DICOM package is defined in the ordcpksp.sql file. After installation, this file is available in the Oracle home directory at:

<ORACLE_HOME>/ord/im/admin (on Linux and UNIX)

<ORACLE_HOME>\ord\im\admin (on Windows)

Oracle Multimedia contains the following information about the DICOM relational interface:

DICOM Relational Functions
DICOM Relational Procedures

This chapter describes the functions and procedures in the DICOM relational interface. For information about other DICOM application programming interfaces (APIs), see these chapters:

Chapter 4 - DICOM data model utility API
Chapter 5 - ORDDicom object API
Chapter 10 - ORD_DICOM_ADMIN data model repository API

See Oracle Multimedia DICOM Java API Reference for information about the DICOM Java API.

6.1 Examples for DICOM Relational Functions and Procedures

The functions and procedures for the DICOM relational interface described in this chapter show examples based on the MEDICAL_IMAGE_REL table, which these examples create in the Product Media (PM) sample schema. See the MEDICAL_IMAGE_REL Table Definition when reading through these examples. See Oracle Database Sample Schemas for information about the sample schemas.

Before using DICOM relational interface functions and procedures, you must load some data into the table. For example, you can use SQL*Loader or the importFrom( ) procedure. Substitute your DICOM files for those in the examples.

6.1.1 Directory Definition and Setup

Issue the following statements before executing the examples, where c:\mydir\work is the directory where the user pm can find the DICOM files:

CREATE OR REPLACE DIRECTORY DICOMDIR as 'c:\mydir\work';
GRANT READ, WRITE ON DIRECTORY DICOMDIR TO pm;

Note:

At the beginning of each database session, call the setDataModel( ) procedure. See the setDataModel( ) Procedure for more information.

6.1.2 MEDICAL_IMAGE_REL Table Definition

Before loading data into the table, you must create the table and columns where the data is to be stored. The following PL/SQL code segment creates the MEDICAL_IMAGE_REL table with five columns.

CONNECT pm

Enter password: password

CREATE TABLE MEDICAL_IMAGE_REL
(
 id            integer primary key,
 blob_src      blob,
 bfile_src     bfile,
 image_src     ordsys.ordimage,
 blob_dest     blob
);
COMMIT;

where:

blob_src: the source DICOM content in the BLOB.
bfile_src: the source DICOM content in the BFILE.
image_src: the source DICOM content in the ORDImage object.
blob_dest: the destination DICOM content in the BLOB.

DICOM Relational Functions

The ORD_DICOM package defines these DICOM relational functions:

extractMetadata( ) for BFILEs
extractMetadata( ) for BLOBs
extractMetadata( ) for ORDImage
isAnonymous( ) for BFILEs
isAnonymous( ) for BLOBs
isAnonymous( ) for ORDImage
isConformanceValid( ) for BFILEs
isConformanceValid( ) for BLOBs
isConformanceValid( ) for ORDImage

extractMetadata( ) for BFILEs

Format

extractMetadata( data IN BFILE, extractOption IN VARCHAR2 DEFAULT 'ALL', docName IN VARCHAR2 DEFAULT 'ordcmmp.xml') RETURN SYS.XMLTYPE

Description

Returns the DICOM metadata as an XML document for a specified mapping document. The default mapping document refers to the default metadata namespace http://xmlns.oracle.com/ord/dicom/metadata_1_0.

Parameters

data

The input DICOM content stored in a BFILE.

extractOption

A string that specifies the types of metadata to extract from the DICOM content. Valid values are: 'ALL', 'MAPPED', and 'STANDARD'. The default is 'ALL'.

When the value of the extractOption parameter is 'ALL', all attributes in the DICOM content are extracted. When the value is set to 'MAPPED', only mapped attributes are extracted. And, when the value is set to 'STANDARD', only attributes that conform to the DICOM standard and mapped attributes are extracted.

docName

The name of the mapping document. The default mapping document 'ordcmmp.xml' is loaded during installation.

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Extract metadata from the DICOM content stored in a BFILE:

declare
  src bfile;
  metadata xmltype;
begin
  select bfile_src into src from medical_image_rel where id = 1 for update;
  metadata := ord_dicom.extractMetadata(src, 'all', 'ordcmmp.xml');
end;
/

extractMetadata( ) for BLOBs

Format

extractMetadata( data IN BLOB, extractOption IN VARCHAR2 DEFAULT 'ALL', docName IN VARCHAR2 DEFAULT 'ordcmmp.xml') RETURN SYS.XMLTYPE

Description

Returns the DICOM metadata as an XML document for a specified mapping document. The default mapping document refers to the default metadata namespace http://xmlns.oracle.com/ord/dicom/metadata_1_0.

Parameters

data

The input DICOM content stored in a BLOB.

extractOption

A string that specifies the types of metadata to extract from the DICOM content. Valid values are: 'ALL', 'MAPPED', and 'STANDARD'. The default is 'ALL'.

docName

The name of the mapping document. The default mapping document 'ordcmmp.xml' is loaded during installation.

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Extract metadata from the DICOM content stored in a BLOB:

declare
  src blob;
  metadata xmltype;
begin
  select blob_src into src from medical_image_rel where id = 1 for update;
  metadata := ord_dicom.extractMetadata(src, 'all', 'ordcmmp.xml');
end;

extractMetadata( ) for ORDImage

Format

extractMetadata( data IN ORDSYS.ORDImage, extractOption IN VARCHAR2 DEFAULT 'ALL', docName IN VARCHAR2 DEFAULT 'ordcmmp.xml') RETURN SYS.XMLTYPE

Description

Returns the DICOM metadata as an XML document for a specified mapping document. The default mapping document refers to the default metadata namespace http://xmlns.oracle.com/ord/dicom/metadata_1_0.

Parameters

data

The input DICOM content stored in an ORDImage object.

extractOption

A string that specifies the types of metadata to extract from the DICOM content. Valid values are: 'ALL', 'MAPPED', and 'STANDARD'. The default is 'ALL'.

When the value of the extractOption parameter is 'ALL', all attributes in the DICOM content are extracted. When the value is set to 'MAPPED', only mapped attributes are extracted. And, when the value is set to 'STANDARD', only attributes that conform to the DICOM standard and mapped attributes are extracted.

docName

The name of the mapping document. The default mapping document 'ordcmmp.xml' is loaded during installation.

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Extract metadata from the DICOM content stored in an ORDImage object:

declare
  src ordimage;
  metadata xmltype;
begin
  select image_src into src from medical_image_rel where id = 1 for update;
  metadata := ord_dicom.extractMetadata(src, 'all', 'ordcmmp.xml');
end;
/

isAnonymous( ) for BFILEs

Format

isAnonymous( src IN BFILE, anonymityDocName IN VARCHAR2 DEFAULT 'ordcman.xml') RETURN INTEGER

Description

Determines whether the input DICOM content is anonymous, using a specified anonymity document. This function returns a value of 1 if the data is anonymous; otherwise it returns a value of 0.

Parameters

src: The input DICOM content stored in a BFILE.
anonymityDocName: The name of the anonymity document. The default name is'ordcman.xml'.

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Check if the DICOM content stored in a BFILE is anonymous:

select ord_dicom.isAnonymous(t.bfile_src, 'ordcman.xml') 
  from medical_image_rel t where id = 1;

isAnonymous( ) for BLOBs

Format

isAnonymous( src IN BLOB, anonymityDocName IN VARCHAR2 DEFAULT 'ordcman.xml') RETURN INTEGER

Description

Determines whether the input DICOM content is anonymous, using a specified anonymity document. This function returns a value of 1 if the data is anonymous; otherwise it returns a value of 0.

Parameters

src: The input DICOM content stored in a BLOB.
anonymityDocName: The name of the anonymity document. The default name is 'ordcman.xml'.

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Check if the DICOM content stored in a BLOB is anonymous:

select ord_dicom.isAnonymous(t.blob_src, 'ordcman.xml') 
  from medical_image_rel t where id = 1;

isAnonymous( ) for ORDImage

Format

isAnonymous( src IN ORDSYS.ORDImage, anonymityDocName IN VARCHAR2 DEFAULT 'ordcman.xml') RETURN INTEGER

Description

Determines whether the input DICOM content is anonymous, using a specified anonymity document. This function returns a value of 1 if the data is anonymous; otherwise it returns a value of 0.

Parameters

src: The input DICOM content stored in an ORDImage object.
anonymityDocName: The name of the anonymity document. The default name is 'ordcman.xml'.

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Check if the DICOM content stored in an ORDImage object is anonymous:

select ord_dicom.isAnonymous(t.image_src, 'ordcman.xml') 
  from medical_image_rel t where id = 1;

isConformanceValid( ) for BFILEs

Format

isConformanceValid( src IN BFILE, constraintName IN VARCHAR2 ) RETURN INTEGER

Description

This method also logs error messages from the constraint documents, which can be viewed by querying the public information view orddcm_conformance_vld_msgs.

Parameters

src: The input DICOM content stored in a BFILE.
constraintName: The name of the constraint to be used for conformance validation checking.

Pragmas

None.

Exceptions

None.

Usage Notes

If this method is called from a SQL query, ensure that the constraint rule definition does not contain any <ACTION> elements.

Examples

Delete any existing conformance validation messages. Check if the DICOM content stored in a BFILE is conformance valid. Then, show any new conformance validation messages that are generated.

-- clear the previous conformance validation messages
delete from orddcm_conformance_vld_msgs;

-- conformance validate the DICOM content
    declare
      src bfile;
    begin
      select bfile_src into src from medical_image_rel where id = 1;
      dbms_output.put_line('isConformanceValid(PatientModule) ' ||
        ord_dicom.isConformanceValid(src, 'PatientModule'));
    end;
    /

-- get the logged conformance validation messages
select message, msg_time time from orddcm_conformance_vld_msgs
  where rule_name='PatientModule';

isConformanceValid( ) for BLOBs

Format

isConformanceValid( src IN BLOB, constraintName IN VARCHAR2 ) RETURN INTEGER

Description

This method also logs error messages from the constraint documents, which can be viewed by querying the public information view orddcm_conformance_vld_msgs.

Parameters

src: The input DICOM content stored in a BLOB.
constraintName: The name of the constraint to be used for conformance validation checking.

Pragmas

None.

Exceptions

None.

Usage Notes

If this method is called from a SQL query, ensure that the constraint rule definition does not contain any <ACTION> elements.

Examples

Delete any existing conformance validation messages. Check if the DICOM content stored in a BLOB is conformance valid. Then, show any new conformance validation messages that are generated.

-- clear the previous conformance validation messages
delete from orddcm_conformance_vld_msgs;

-- conformance validate the DICOM content
    declare
      src blob;
    begin
      select blob_src into src from medical_image_rel where id = 1;
      dbms_output.put_line('isConformanceValid(PatientModule) ' ||
       ord_dicom.isConformanceValid(src, 'PatientModule'));
    end;
    /

-- get the logged conformance validation messages
select message, msg_time time from orddcm_conformance_vld_msgs
  where rule_name='PatientModule';

isConformanceValid( ) for ORDImage

Format

isConformanceValid( src IN ORDSYS.ORDImage, constraintName IN VARCHAR2 ) RETURN INTEGER

Description

Performs a conformance validation check to determine whether the input DICOM content conforms to a specified set of constraints identified by the constraintName parameter. This method returns a value of 1 if conformance is valid; otherwise it returns a value of 0. This method also logs error messages from the constraint documents, which can be viewed by querying the public information view orddcm_conformance_vld_msgs.

Parameters

src: The input DICOM content stored in an ORDImage object.
constraintName: The name of the constraint to be used for conformance validation checking.

Pragmas

None.

Exceptions

None.

Usage Notes

If this method is called from a SQL query, ensure that the constraint rule definition does not contain any <ACTION> elements.

Examples

Delete any existing conformance validation messages. Check if the DICOM content stored in an ORDImage object is conformance valid. Then, show any new conformance validation messages that are generated.

-- clear the previous conformance validation messages
delete from orddcm_conformance_vld_msgs;

-- conformance validate the DICOM content
    declare
      src ordimage;
    begin
      select image_src into src from medical_image_rel where id = 1;
      dbms_output.put_line('isConformanceValid(PatientModule) ' ||
       ord_dicom.isConformanceValid(src, 'PatientModule'));
    end;
    / 

-- get the logged conformance validation messages
select message, msg_time time from orddcm_conformance_vld_msgs
  where rule_name='PatientModule';

DICOM Relational Procedures

The ORD_DICOM package defines these DICOM relational procedures:

createDicomImage( ) for BFILEs
createDicomImage( ) for BLOBs
createDicomImage( ) for ORDImage
export( )
importFrom( )
makeAnonymous( ) for BFILEs
makeAnonymous( ) for BLOBs
makeAnonymous( ) for ORDImage
processCopy( ) for BFILEs
processCopy( ) for BFILEs with SOP Instance UID
processCopy( ) for BLOBs
processCopy( ) for BLOBs with SOP Instance UID
processCopy( ) for ORDImage
processCopy( ) for ORDImage with SOP Instance UID
writeMetadata( ) for BFILEs
writeMetadata( ) for BLOBs
writeMetadata( ) for ORDImage

createDicomImage( ) for BFILEs

Format

createDicomImage( src IN BFILE, metadata IN SYS.XMLTYPE, dest IN OUT NOCOPY BLOB)

Description

Creates a DICOM image from a source image and DICOM metadata.

Parameters

src: The source raster image stored in a BFILE.
metadata: DICOM metadata stored in data type XMLType. The metadata must include all standard and private attributes. It must include a new SOP instance UID for the destination DICOM image, ensuring that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the DICOM image created from the source image and metadata.

Pragmas

None.

Exceptions

None.

Usage Notes

See Appendix C for information about the encoding rules that support image content processing.

Examples

Create a DICOM image from a source BFILE and DICOM metadata:

declare
  src bfile;
  dest blob;
  metadata xmltype;
begin
  metadata := xmltype(bfilename('DICOMDIR', 'wm_meta.xml'), 
                      nls_charset_id('AL32UTF8'), 
                      'http://xmlns.oracle.com/ord/dicom/metadata_1_0');
 
  select bfile_src, blob_dest into src, dest from medical_image_rel 
    where id = 1 for update;
 
  ord_dicom.createDicomImage(src, metadata, dest);
end;
/

createDicomImage( ) for BLOBs

Format

createDicomImage( src IN BLOB, metadata IN SYS.XMLTYPE, dest IN OUT NOCOPY BLOB)

Description

Creates a DICOM image from a source image and DICOM metadata.

Parameters

src: The source raster image stored in a BLOB.
metadata: DICOM metadata stored in data type XMLType. The metadata must include all standard and private attributes. It must include a new SOP instance UID for the destination DICOM image, ensuring that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the DICOM image created from the source image and metadata.

Pragmas

None.

Exceptions

None.

Usage Notes

See Appendix C for information about the encoding rules that support image content processing.

Examples

Create a DICOM image from a source BLOB and DICOM metadata:

declare
  src blob;
  dest blob;
  metadata xmltype;
begin
  metadata := xmltype(bfilename('DICOMDIR', 'wm_meta.xml'), 
                      nls_charset_id('AL32UTF8'), 
                      'http://xmlns.oracle.com/ord/dicom/metadata_1_0');
 
  select blob_src, blob_dest into src, dest from medical_image_rel 
    where id = 1 for update;
 
  ord_dicom.createDicomImage(src, metadata, dest);
end;
/

createDicomImage( ) for ORDImage

Format

createDicomImage( src IN ORDSYS.ORDImage, metadata IN SYS.XMLTYPE, dest IN OUT NOCOPY BLOB)

Description

Creates a DICOM image from a source image and DICOM metadata.

Parameters

src: The source raster image stored in an ORDImage object.
metadata: DICOM metadata stored in data type XMLType. The metadata must include all standard and private attributes. It must include a new SOP instance UID for the destination DICOM image, ensuring that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the DICOM image created from the source image and metadata.

Pragmas

None.

Exceptions

None.

Usage Notes

See Appendix C for information about the encoding rules that support image content processing.

Examples

Create a DICOM image from a source ORDImage object and DICOM metadata:

declare
  src ordimage;
  dest blob;
  metadata xmltype;
begin
  metadata := xmltype(bfilename('DICOMDIR', 'wm_meta.xml'), 
                      nls_charset_id('AL32UTF8'), 
                      'http://xmlns.oracle.com/ord/dicom/metadata_1_0');
 
  select image_src, blob_dest into src, dest from medical_image_rel 
    where id = 1 for update;
 
  ord_dicom.createDicomImage(src, metadata, dest);
end;
/

export( )

Format

export( src IN BLOB, dest_type IN VARCHAR2, dest_location IN VARCHAR2, dest_name IN VARCHAR2)

Description

Exports DICOM content in a BLOB to a specified destination. The data remains in the source BLOB when it is copied to the destination.

Parameters

src: The source location of the DICOM content.
dest_type: The type of the destination (only 'FILE' is supported).
dest_location: The location of the destination (must be a valid Oracle directory object).
dest_name: The name of the destination file.

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Export DICOM content from a BLOB to a specified file:

declare
  src blob;
begin
  select blob_src into src from medical_image_rel where id = 1;
  ord_dicom.export(src, 'FILE', 'DICOMDIR', 'exported.dcm');
end;
/

importFrom( )

Format

importFrom( dest IN OUT NOCOPY BLOB, source_type IN VARCHAR2, source_location IN VARCHAR2, source_name IN VARCHAR2)

Description

Imports DICOM content from a specified source into a BLOB.

Parameters

dest: The storage destination of the imported DICOM file.
source_type: The type of the source (only 'FILE' is supported).
source_location: The location of the source (must be a valid Oracle directory object).
source_name: The name of the source file.

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Import the DICOM content into a BLOB:

declare
  dest blob;
begin
  select blob_dest into dest from medical_image_rel where id = 1 for update;
  ord_dicom.importFrom(dest, 'file', 'DICOMDIR', 'example.dcm');
end;
/

makeAnonymous( ) for BFILEs

Format

makeAnonymous( src IN BFILE, dest_sop_instance_uid IN VARCHAR2, dest IN OUT NOCOPY BLOB, anonymityDocName IN VARCHAR2 DEFAULT 'ordcman.xml')

Description

Removes patient identifying information from the source DICOM content after copying it into another DICOM content BLOB, based on a specified anonymity document.

Parameters

src: The input DICOM content stored in a BFILE.
dest_sop_instance_uid: The SOP instance UID of the destination DICOM content. It must ensure that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the anonymous DICOM content.
anonymityDocName: The name of the anonymity document. The default name is "ordcman.xml".

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Remove patient identifying information from the embedded DICOM content stored in a BFILE:

declare
  src bfile;
  dest blob;
  dest_sop_instance_uid varchar2(128) := '<unique-UID>';
begin
  select bfile_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
  ord_dicom.makeAnonymous(src, dest_sop_instance_uid, dest, 'ordcman.xml');
end;
/

where:

<unique-UID>: a 64-byte, dot-concatenated, numeric string that represents a globally unique identifier for DICOM content worldwide. The UID is commonly constructed with a root that uniquely identifies the organization producing the DICOM content, and a suffix that uniquely identifies the DICOM content within that organization.

makeAnonymous( ) for BLOBs

Format

makeAnonymous( src IN BLOB, dest_sop_instance_uid IN VARCHAR2, dest IN OUT NOCOPY BLOB, anonymityDocName IN VARCHAR2 DEFAULT 'ordcman.xml')

Description

Removes patient identifying information from the source DICOM content after copying it into another DICOM content BLOB, based on a specified anonymity document.

Parameters

src: The input DICOM content stored in a BLOB.
dest_sop_instance_uid: The SOP instance UID of the destination DICOM content. It must ensure that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the anonymous DICOM content.
anonymityDocName: The name of the anonymity document. The default name is "ordcman.xml".

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Remove patient identifying information from the embedded DICOM content stored in a BLOB:

declare
  src blob;
  dest blob;
  dest_sop_instance_uid varchar2(128) := '<unique-UID>';
begin
  select blob_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
  ord_dicom.makeAnonymous(src, dest_sop_instance_uid, dest, 'ordcman.xml');
end;
/

where:

<unique-UID>: a 64-byte, dot-concatenated, numeric string that represents a globally unique identifier for DICOM content worldwide. The UID is commonly constructed with a root that uniquely identifies the organization producing the DICOM content, and a suffix that uniquely identifies the DICOM content within that organization.

makeAnonymous( ) for ORDImage

Format

makeAnonymous( src IN ORDSYS.ORDImage, dest_sop_instance_uid IN VARCHAR2, dest IN OUT NOCOPY BLOB, anonymityDocName IN VARCHAR2 DEFAULT 'ordcman.xml')

Description

Removes patient identifying information from the source DICOM content after copying it into another DICOM content BLOB, based on a specified anonymity document.

Parameters

src: The input DICOM content stored in an ORDImage object.
dest_sop_instance_uid: The SOP instance UID of the destination DICOM content. It must ensure that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the anonymous DICOM content.
anonymityDocName: The name of the anonymity document. The default name is "ordcman.xml".

Pragmas

None.

Exceptions

None.

Usage Notes

None.

Examples

Remove patient identifying information from the embedded DICOM content stored in an ORDImage object:

declare
  src ordimage;
  dest blob;
  dest_sop_instance_uid varchar2(128) := '<unique-UID>';
begin
  select image_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
  ord_dicom.makeAnonymous(src, dest_sop_instance_uid, dest, 'ordcman.xml');
end;
/

where:

<unique-UID>: a 64-byte, dot-concatenated, numeric string that represents a globally unique identifier for DICOM content worldwide. The UID is commonly constructed with a root that uniquely identifies the organization producing the DICOM content, and a suffix that uniquely identifies the DICOM content within that organization.

processCopy( ) for BFILEs

Format

processCopy( src IN BFILE, command IN VARCHAR2, dest IN OUT NOCOPY BLOB)

Description

Reads the DICOM content that is input from the source BFILE, writes it to the destination BLOB, and then performs the specified processing operations on the destination BLOB. The original DICOM content that was input remains unchanged.

Parameters

src: The input DICOM content stored in the source BFILE.
command: A command string that accepts a processing operator as input. Valid values include: fileFormat, frame, contentFormat, compressionFormat, cut, scale, and rotate. See Appendix D for information about processing operators.
dest: An empty BLOB in which to store the destination content.

Pragmas

None.

Exceptions

None.

Usage Notes

See Appendix C for information about the encoding rules that support DICOM content processing. See Appendix D for more information about DICOM processing.

Examples

Copy the DICOM content from a BFILE into a BLOB and then process it:

declare
  src bfile;
  dest blob;
begin
  select bfile_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
  ord_dicom.processCopy(src, 'fileFormat=jpeg maxScale=100 100', dest);
end;
/

processCopy( ) for BFILEs with SOP Instance UID

Format

processCopy(src IN BFILE, command IN VARCHAR2, dest_sop_instance_uid IN VARCHAR2, dest IN OUT NOCOPY BLOB, metadata IN SYS.XMLTYPE DEFAULT NULL)

Description

Reads the DICOM content that is input from the source BFILE, writes it to the destination BLOB, performs the specified processing operations on the destination BLOB, and then updates it with the new metadata. The original DICOM content that was input remains unchanged.

Parameters

src: The input DICOM content stored in the source BFILE.
command: A command string that accepts a processing operator as input. Valid values include: frame, contentFormat, compressionFormat, cut, scale, and rotate. See Appendix D for information about processing operators.
dest_sop_instance_uid: The SOP instance UID of the destination DICOM content. It must ensure that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the destination content.
metadata: The new metadata to be written into the new DICOM content.

Pragmas

None.

Exceptions

None.

Usage Notes

See Appendix C for information about the encoding rules that support DICOM content processing. See Appendix D for more information about DICOM processing.

Examples

Copy the DICOM content from a BFILE into a BLOB with a specified SOP instance UID and then process it:

src bfile;
  dest blob;
  dest_sop_instance_uid varchar2(128) := '<unique-UID>';
begin
  select bfile_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
  ord_dicom.processCopy(
    src, 'CompressionFormat=jpeg', dest_sop_instance_uid, dest);
end;
/

where:

<unique-UID>: a 64-byte, dot-concatenated, numeric string that represents a globally unique identifier for DICOM content worldwide. The UID is commonly constructed with a root that uniquely identifies the organization producing the DICOM content, and a suffix that uniquely identifies the DICOM content within that organization.

processCopy( ) for BLOBs

Format

processCopy( src IN BLOB, command IN VARCHAR2, dest IN OUT NOCOPY BLOB)

Description

Reads the DICOM content that is input from the source BLOB, writes it to the destination BLOB, and then performs the specified processing operations on the destination BLOB. The original DICOM content that was input remains unchanged.

Parameters

src: The input DICOM content stored in the source BLOB.
command: A command string that accepts a processing operator as input. Valid values include: fileFormat, frame, contentFormat, compressionFormat, cut, scale, and rotate. See Appendix D for information about processing operators.
dest: An empty BLOB in which to store the destination content.

Pragmas

None.

Exceptions

None.

Usage Notes

See Appendix C for information about the encoding rules that support DICOM content processing. See Appendix D for more information about DICOM processing.

Examples

Copy the DICOM content from a BLOB into another BLOB and then process it:

src blob;
  dest blob;
begin
  select blob_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
  ord_dicom.processCopy(src, 'fileFormat=jpeg maxScale=100 100' dest);
end;
/

processCopy( ) for BLOBs with SOP Instance UID

Format

processCopy(src IN BLOB, command IN VARCHAR2, dest_sop_instance_uid IN VARCHAR2, dest IN OUT NOCOPY BLOB, metadata IN SYS.XMLTYPE DEFAULT NULL)

Description

Reads the DICOM content that is input from the source BLOB, writes it to the destination BLOB, performs the specified processing operations on the destination BLOB, and then updates it with the new metadata. The original DICOM content that was input remains unchanged.

Parameters

src: The input DICOM content stored in the source BLOB.
command: A command string that accepts a processing operator as input. Valid values include: frame, contentFormat, compressionFormat, cut, scale, and rotate. See Appendix D for information about processing operators.
dest_sop_instance_uid: The SOP instance UID of the destination DICOM content. It must ensure that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the destination content.
metadata: The new metadata to be written into the new DICOM content.

Pragmas

None.

Exceptions

None.

Usage Notes

See Appendix C for information about the encoding rules that support DICOM content processing. See Appendix D for more information about DICOM processing.

Examples

Copy the DICOM content from a BLOB into another BLOB with a specified SOP instance UID and then process it:

declare
  src blob;
  dest blob;
  dest_sop_instance_uid varchar2(128) := '<unique-UID>';
begin
  select blob_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
  ord_dicom.processCopy(
    src, 'CompressionFormat=jpeg', dest_sop_instance_uid, dest);
end;
/

where:

<unique-UID>: a 64-byte, dot-concatenated, numeric string that represents a globally unique identifier for DICOM content worldwide. The UID is commonly constructed with a root that uniquely identifies the organization producing the DICOM content, and a suffix that uniquely identifies the DICOM content within that organization.

processCopy( ) for ORDImage

Format

processCopy( src IN ORDSYS.ORDImage, command IN VARCHAR2, dest IN OUT NOCOPY BLOB)

Description

Reads the DICOM content that is input from the source ORDImage object, writes it to the destination BLOB, and then performs the specified processing operations on the destination BLOB. The original DICOM content that was input remains unchanged.

Parameters

src: The input DICOM content stored in the source ORDImage object.
command: A command string that accepts an image processing operator as input. Valid values include: fileFormat, frame, contentFormat, compressionFormat, cut, scale, and rotate. See Appendix D for information about image processing operators.
dest: An empty BLOB in which to store the destination content.

Pragmas

None.

Exceptions

None.

Usage Notes

Use this method to get a non-DICOM image that is suitable for presentation on the Web from the embedded DICOM content.

See Appendix C for information about the encoding rules that support image content processing. See Appendix D for more information about DICOM processing.

Examples

Copy the DICOM content from an ORDImage object into a BLOB and then process it:

declare
  src ordimage;
  dest blob;
begin
  select image_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
  ord_dicom.processCopy(src, 'fileFormat=jpeg maxScale=100 100' dest);
end;
/

processCopy( ) for ORDImage with SOP Instance UID

Format

processCopy(src IN ORDSYS.ORDImage, command IN VARCHAR2, dest_sop_instance_uid IN VARCHAR2, dest IN OUT NOCOPY BLOB, metadata IN SYS.XMLTYPE DEFAULT NULL)

Description

Reads the DICOM content that is input from the source ORDImage object, writes it to the destination BLOB, performs the specified processing operations on the destination BLOB, and then updates it with the new metadata. The original DICOM content that was input remains unchanged.

Parameters

src: The input DICOM content stored in the source ORDImage object.
command: A command string that accepts an image processing operator as input. Valid values include: frame, contentFormat, compressionFormat, cut, scale, and rotate. See Appendix D for information about image processing operators.
dest_sop_instance_uid: The SOP instance UID of the destination DICOM image. It must ensure that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the destination content.
metadata: The new metadata to be written into the new DICOM content.

Pragmas

None.

Exceptions

None.

Usage Notes

Use this method to get a non-DICOM image that is suitable for presentation on the Web from the embedded DICOM content.

See Appendix C for information about the encoding rules that support image content processing. See Appendix D for more information about DICOM processing.

Examples

Copy the DICOM content from an ORDImage object into a BLOB with a specified SOP instance UID and then process it:

declare
  src ordimage;
  dest blob;
  dest_sop_instance_uid varchar2(128) := '<unique-UID>';
begin
  select image_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
  ord_dicom.processCopy(
    src, 'CompressionFormat=jpeg', dest_sop_instance_uid, dest);
end;
/

where:

<unique-UID>: a 64-byte, dot-concatenated, numeric string that represents a globally unique identifier for DICOM content worldwide. The UID is commonly constructed with a root that uniquely identifies the organization producing the DICOM content, and a suffix that uniquely identifies the DICOM content within that organization.

writeMetadata( ) for BFILEs

Format

writeMetadata( src IN BFILE, metadata IN SYS.XMLTYPE, dest IN OUT NOCOPY BLOB),

Description

Writes or modifies the current DICOM content with the metadata provided by making a copy of the existing DICOM content in the destination BLOB, and then modifying the metadata. The original DICOM content remains unchanged. The attributes in the destination DICOM content are copied from the metadata that was input.

Parameters

src: The input DICOM content stored in a BFILE.
metadata: The input metadata stored in data type XMLType. In the destination DICOM content, the input metadata is used to update the values for attributes that are identical to attributes in the source DICOM content or to add any new attributes. The metadata must conform to the default metadata schema with the namespace http://xmlns.oracle.com/ord/dicom/metadata_1_0. The SOP instance UID in the metadata must ensure that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the new DICOM content with the new metadata.

Pragmas

None.

Exceptions

None.

Usage Notes

See Appendix C for information about the encoding rules that support metadata extraction.

Examples

Write the new metadata to the copy of the DICOM content in the destination BLOB:

declare
  src bfile;
  dest blob;
  metadata xmltype;
begin
  metadata := xmltype(bfilename('DICOMDIR', 'wm_meta.xml'), 
                      nls_charset_id('AL32UTF8'), 
                      'http://xmlns.oracle.com/ord/dicom/metadata_1_0');
 
  select bfile_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
 
  ord_dicom.writeMetadata(src, metadata, dest);
 
end;
/

writeMetadata( ) for BLOBs

Format

writeMetadata( src IN BLOB, metadata IN SYS.XMLTYPE, dest IN OUT NOCOPY BLOB),

Description

Parameters

src: The input DICOM content stored in a BLOB.
metadata: The input metadata stored in data type XMLType. In the destination DICOM content, the input metadata is used to update the values for attributes that are identical to attributes in the source DICOM content or to add any new attributes. The metadata must conform to the default metadata schema with the namespace http://xmlns.oracle.com/ord/dicom/metadata_1_0. The SOP instance UID in the metadata must ensure that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the new DICOM content with the new metadata.

Pragmas

None.

Exceptions

None.

Usage Notes

See Appendix C for information about the encoding rules that support metadata extraction.

Examples

Write the new metadata to the copy of the DICOM content in the destination BLOB:

declare
  src blob;
  dest blob;
  metadata xmltype;
begin
  metadata := xmltype(bfilename('DICOMDIR', 'wm_meta.xml'), 
                      nls_charset_id('AL32UTF8'), 
                      'http://xmlns.oracle.com/ord/dicom/metadata_1_0');
 
  select blob_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
 
  ord_dicom.writeMetadata(src, metadata, dest);
 
end;
/

writeMetadata( ) for ORDImage

Format

writeMetadata( src IN ORDSYS.ORDImage, metadata IN SYS.XMLTYPE, dest IN OUT NOCOPY BLOB),

Description

Parameters

src: The input DICOM content stored in an ORDImage object.
metadata: The input metadata stored in data type XMLType. In the destination DICOM content, the input metadata is used to update the values for attributes that are identical to attributes in the source DICOM content or to add any new attributes. The metadata must conform to the default metadata schema with the namespace http://xmlns.oracle.com/ord/dicom/metadata_1_0. The SOP instance UID in the metadata must ensure that the destination DICOM content is globally unique.
dest: An empty BLOB in which to store the new DICOM content with the new metadata.

Pragmas

None.

Exceptions

None.

Usage Notes

See Appendix C for information about the encoding rules that support metadata extraction.

Examples

Write the new metadata to the copy of the DICOM content in the destination BLOB:

declare
  src ordimage;
  dest blob;
  metadata xmltype;
begin
  metadata := xmltype(bfilename('DICOMDIR', 'wm_meta.xml'), 
                      nls_charset_id('AL32UTF8'), 
                      'http://xmlns.oracle.com/ord/dicom/metadata_1_0');
 
  select image_src, blob_dest into src, dest from medical_image_rel
    where id = 1 for update;
 
  ord_dicom.writeMetadata(src, metadata, dest);
 
end;
/