title: [Comparison of enhanced magnetic resonance and diffusion-weighted imaging for detection of hepatic metastases].
abstract: OBJECTIVE
  To compare the roles of Gd-EOB-DTPA-enhanced magnetic resonance imaging (MRI) using the liver acquisition with volume acceleration(LAVA) sequence and diffusion-weighted imaging(DWI) in the detection of hepatic metastases sized ≤3 cm.
  
  
  METHODS
  We retrospectively analyzed the MRI data of 16 patients with hepatic metastases. All the sequences used included T1WI, T2WI,3D-LAVA, and DWI (b value=500 s/mm(2)). All patients were divided into two groups based on the sequences: group A (T1WI, T2WI, and 3D-LAVA enhanced MR) and group B(T1WI,T2WI and DWI). The hepatic metastases were evaluated by analyzing the receiver operating characteristic (ROC) curves.
  
  
  RESULTS
  A total of 39 hepatic metastatic lesions were identified. The sensitivity, specificity, Youden index and the area under the ROC curve (AUC) were 97.4%, 88.2%, 0.856, and 0.944 in group A and 82.1%, 91.2%, 0.733, and 0.834 in group B. The ROC curves (p=0.040) and Youden index(p=0.043) in group A were significantly larger than in group B.
  
  
  CONCLUSIONS
  Gadolinium-EOB-DTPA-enhanced MRI has higher accuracy than DWI in the detection of small metastases.
authors.affiliation: Department of Radiology, Huzhou Central Hospital, Huzhou, Zhejiang, China.
authors.forename: Hai-feng
authors.initials: HF
authors.lastname: Qian
authors.forename: Yue-ming
authors.initials: YM
authors.lastname: Zhu
authors.forename: Xiao
authors.initials: X
authors.lastname: Wu
authors.forename: Feng-qi
authors.initials: FQ
authors.lastname: Li
authors.forename: Hao-bo
authors.initials: HB
authors.lastname: Xuan
authors.forename: Jian
authors.initials: J
authors.lastname: Shen
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D038524:Diffusion Magnetic Resonance Imaging; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis / Q000556:secondary*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies