}else if (w.GetReturnCode() == wxID_CANCEL){
vtkMetaImageReader *reader = vtkMetaImageReader::New();
wxString filename= getExecutablePath()+ wxString( _T("/data/hola.mhd") , wxConvUTF8 );
}else if (w.GetReturnCode() == wxID_CANCEL){
vtkMetaImageReader *reader = vtkMetaImageReader::New();
wxString filename= getExecutablePath()+ wxString( _T("/data/hola.mhd") , wxConvUTF8 );