TY - JOUR AN - 7 AU - Bernatik,T. AU - Becker,D. AU - Neureiter,D. TI - Detection of liver metastases - comparison of contrast - enhanced ultrasound using first versus second generation contrast agents. JO - Ultraschall in Med PY - 2003 VL - 24 SP - 175-179 M2 - 175 DO - 10.1055/s-2003-40060 ER -