DicomAssociationAbortedException during C-Find request

[Semyon Kotlyarov]

I try to do C-Find request from my C# application to Orthanc server (hosted on the same PC and worked with DICOMweb requests), but get an exception:

"Dicom.Network.DicomAssociationAbortedException: "Association Abort [source: Unknown; reason: NotSpecified]"

I tried "fo-dicom-examples\QueryRetrieve SCU" project and it works with default server, but with my server it gives the same exception:

private static string QRServerHost = "127.0.0.1";

private static int QRServerPort = 4242;

private static string QRServerAET = "ORTHANC";

 private static string AET = "FODICOMSCU";

<...>

var client = new DicomClient();

client.NegotiateAsyncOps();

var request = CreateStudyRequestByPatientName("MISTER^CT*");

client.AddRequest(request);

client.Send(QRServerHost, QRServerPort, false, AET, QRServerAET);

Any ideas what can be wrong?

[Anders Gustafsson Cureos AB]

Hi Semyon,

what does the Orthanc log say? Which fo-dicom version are you using, and on which platform?

Regards,

Anders @ Cureos

[Semyon Kotlyarov]

Hi Anders, 

I'm using Orthanc server (v17.6.1) on Win10 and C# application with fo-docom (v3.0.0).

I figured out how to use C-Find and C-Move (problem was in not working local AET), but now I have a problem with C-GET:

I tried to use C-GET example from fo-dicom-samples repository with my Orthanc server:

var cGetRequest = CreateCGetBySeriesUID(studyUID, serieUids.First());

client.OnCStoreRequest += (DicomCStoreRequest req) =>

 {

    SaveImage(req.Dataset);

    return new DicomCStoreResponse(req, DicomStatus.Success);

};

           

client.AdditionalPresentationContexts.Add(DicomPresentationContext.GetScpRolePresentationContext(

                DicomUID.DigitalXRayImageStorageForPresentation, DicomTransferSyntax.ImplicitVRBigEndian,

                DicomTransferSyntax.ExplicitVRBigEndian, DicomTransferSyntax.ExplicitVRLittleEndian));

client.AddRequest(cGetRequest);

client.Send(QRServerHost, QRServerPort, false, AET, QRServerAET);

but "client.OnCStoreRequest" event even not fired. then I added handler for "request.OnResponseReceived" and got an error in the response:

{Failure [0122: Refused: SOP class not supported]}

Code: 290

State: Failure

Log of Orthanc doesn't have any new messages after request.

I checked that added SopClassUID for AdditionalPresentationContext is correct, but strange, that instances in the Orthanc don't have TransferSyntax tag, can it be a reason of the problem?

[Semyon Kotlyarov]

Hm, I just read that C-GET isn't supported by Orthanc, then I have no questions anymore. 

[Anders Gustafsson Cureos AB]

Glad to hear that things worked out eventually!

Regards

Anders