title: [Diagnostic performance of contrast-enhanced ultrasound in liver metastases and its clinical application].
abstract: OBJECTIVE
  To observe the performance of liver metastases with contrast-enhanced ultrasound (CEUS) and assess its clinical application.
  
  
  METHODS
  Twenty-one patients with 21 untreated liver metastases underwent CEUS with low mechanical index imaging. The characteristic appearances of CEUS in different vascular phases were observed.
  
  
  RESULTS
  Of 21 metastases, 19 (90.5%) were identified as fast-in and fast-out enhancement pattern. In the arterial phase, all the 21 lesions showed enhancement but with varied appearances: 12 (57.1%) showed early diffuse enhancement, 8 (38.1%) showed ring-like enhancement, and the remaining one lesion of large size showed slowly enhomogenous minor enhancement. In the late phase, sharp defects were found in 20 lesions (95.2%), and more lesions were detected in 3 patients (14.3%).
  
  
  CONCLUSIONS
  CEUS can show the characteristic appearance of liver metastases, and can be used for the screening and diagnosis of liver cancers.
authors: Department of Ultrosonography, PUMC Hospital, CAMS and PUMC, Beijing 100730, China.
authors: Ke
authors: K
authors: Lü
authors: Yu-Xin
authors: YX
authors: Jiang
authors: Qing
authors: Q
authors: Dai
authors: Qing-Li
authors: QL
authors: Zhu
authors: Yu
authors: Y
authors: Xia
authors: Li
authors: L
authors: Tan
authors: Hua
authors: H
authors: Meng
authors: Zhen-Hong
authors: ZH
authors: Qi
authors: Pin
authors: P
authors: Gao
mesh_terms: D003287:Contrast Media; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary; D014463:Ultrasonography
chemical_list: D003287:Contrast Media