Currently the readers in the DICOM reader module still depend on the depricated DicomSeriesReader class to load Philips 3D US dicom files (as 4D_TEE_Data_MV.dcm in MITKData\UltrasoundImages).
See mitkBaseDICOMReaderService.cpp (in DICOMReader module)
This is the last dependency on the DicomSeriesReader. If this task is done and DICOMReader can support Philips 3D US on its own, we can remove the ClassicSeriesReader completely and for good.