Contrast-enhanced ultrasound monitoring of perfusion changes in hepatic neuroendocrine metastases after systemic versus selective arterial 177lu/90y-dotatoc and 213bi-dotatoc radiopeptide therapy - F. L. Giesel; P. Flechsig; T. Kuder; L. Schwartz; S. Wulfert; C. Zechmann; F. Bruchertseifer; U. Haberkorn; C. Kratochwil (Experimental Oncology, 2013)