ABSTRACT
The role of Doppler techniques is often limited because flow signals in liver metastases are usually too low to be detected except in markedly hypervascular liver metastases.
Because there are no specific features of metastases at conventional US, the differentiation of a single metastasis from other lesions is usually not possible but on the other hand, US is helpful to characterize benign lesions such as hepatic cysts and hemangiomas in oncological patients. While in many European countries, US was the recommended imaging follow-up method, CT or MRI is nowadays preferred in oncological patients.
