Tag: Retrieve

Converting from DicomQuery to DicomConnection for Q/R

Note: This page applies only to the COM version of DicomObjects - the threading model of the equivalent DicomAssociation object in the .NET version is very different All the DicomQuery-based operations can also be performed using a DicomConnection object, and doing so has several benefits: It allows finer control over the exact presentation contexts offered Multiple operations can occur on one association Perhaps most importantly, if the DicomConnection is asynchronous, then it provides the best solution to using C-MOVE in DicomObjects, avoiding the problems of deadlocking or lack of return status which affect some of the alternatives.

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DicomConnection.Move

Note: This page applies only to the COM version of DicomObjects - the threading model of the equivalent DicomAssociation object in the .NET version is very different The Move method allows a C-MOVE operation to be carried out on an existing DicomConnection. This has several benefits compared to any of the DicomQuery-based alternatives: It allows finer control over the exact presentation contexts offered Multiple operations can occur on one association Perhaps most importantly, if the DicomConnection is asynchronous, then it provides the best solution to using C-MOVE in DicomObjects, avoiding the problems of deadlocking or lack of return status which affect some of the alternatives.

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Frame Level Retrieval

in DICOM,

Frame Level Retrieval (DICOM Supplement 119) was written by Dr. David Harvey, our managing director, and is fully supported by DicomObjects. Frame Selection Options There are 2 (actually 3, with the 3rd one using Content Time values to specify a Time Range) ways to ask for specific frames: Simple Frame List Contains a list of frame numbers, each specifying a frame to be included in the returned object. Calculated Frame List Calculated Frame List (0008,1162) is a multi-valued attribute containing a list of 3-tuples, each representing a sub-range of frames to be included in the returned object.

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Web Access to DICOM Persistent Objects (WADO)

in DICOM,

WADO is a protocol (defined in DICOM Part 18) for retrieving DICOM Composite Instances using the http or https protocols. It is simple to write a WADO server using DicomObjects - see the Example on the web

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