bool getDimensions(DcmDataSet *image, long long &cols,long long &rows)
{
   OFString tmp;

   if (image->findAndGetOFString(DCM_Columns,tmp).bad()) return(false);
   sscanf(tmp.c_str(),"%lld",&cols);
   if (image->findAndGetOFString(DCM_Rows,tmp).bad()) return(false);
   sscanf(tmp.c_str(),"%lld",&rows);

   return(true);
}