Prefer CMOVE operation in query/retrieve

Libs/DICOM/Core/ctkDICOMQuery.cpp

@@ -109,7 +109,7 @@ ctkDICOMQueryPrivate::ctkDICOMQueryPrivate()
   this->Query = new DcmDataset();
   this->Port = 0;
   this->Canceled = false;
-  this->PreferCGET = true;
+  this->PreferCGET = false;
 }
 
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