/// <summary>
/// Convenience method for creating a C-FIND image query.
/// </summary>
/// <param name="studyInstanceUid">Study instance UID.</param>
/// <param name="seriesInstanceUid">Series instance UID.</param>
/// <param name="modality">Modality.</param>
/// <returns>C-FIND image query object.</returns>
public static DicomCFindRequest CreateImageQuery(
string studyInstanceUid,
string seriesInstanceUid,
string modality = null)
{
DicomCFindRequest dimse = DicomCFindRequest.CreateImageQuery(studyInstanceUid, seriesInstanceUid, modality);
return(dimse);
}
private async Task <IEnumerable <ImageDesc> > GetImagesDescAsync(Series series, DicomSearchServiceSettings settings, CancellationToken ct)
{
var uid = series.SeriesInstanceUid;
var max = settings.SeriesImageSettings.SeriesImageTakeImages;
var result = new List <ImageDesc>();
if (ct.IsCancellationRequested)
{
return(result);
}
var request = DicomCFindRequest.CreateImageQuery(series.StudyInstanceUid, series.SeriesInstanceUid);
CancellationTokenSource tooManySeriesCts = null;
var cancellationLock = new object();
request.OnResponseReceived += (req, resp) =>
{
if (ct.IsCancellationRequested || resp.Dataset == null)
{
return;
}
if (result.Count >= settings.SeriesImageSettings.SeriesImageTakeImages)
{
lock (cancellationLock)
{
if (!tooManySeriesCts.IsCancellationRequested)
{
tooManySeriesCts.Cancel();
}
}
if (tooManySeriesCts.IsCancellationRequested)
{
_logger.Debug("Cancelled Image query for series {Uid} after {Max}", uid, max);
}
return;
}
var imageDesc = resp.Dataset.CreateObject <ImageDesc>();
if (imageDesc == null)
{
_logger.Error("ImageDesc creation failed");
return;
}
lock (cancellationLock)
{
result.Add(imageDesc);
}
_logger.Debug("Got imageDesc for series {Uid} on image {ImageUid}. Results: {Count}", uid, imageDesc.SopInstanceUid, result.Count);
};
using (tooManySeriesCts = new CancellationTokenSource())
{
using (CancellationTokenSource linkedCts = CancellationTokenSource.CreateLinkedTokenSource(ct, tooManySeriesCts.Token))
{
_logger.Debug("Getting images desc for series {SeriesInstanceUid}", series.SeriesInstanceUid);
await DicomSearchService.FindAsync <ImageDesc>(request, settings, null, linkedCts.Token);
return(result);
}
}
}