Comparison of enhanced magnetic resonance and diffusion-weighted imaging for detection of hepatic metastases.
- Author:
Hai-feng QIAN
1
;
Yue-ming ZHU
;
Xiao WU
;
Feng-qi LI
;
Hao-bo XUAN
;
Jian SHEN
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Aged; Aged, 80 and over; Diffusion Magnetic Resonance Imaging; Female; Follow-Up Studies; Humans; Liver Neoplasms; diagnosis; secondary; Magnetic Resonance Imaging; methods; Male; Middle Aged; Retrospective Studies
- From: Acta Academiae Medicinae Sinicae 2012;34(6):621-624
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo 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.
METHODSWe 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.
RESULTSA 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.
CONCLUSIONGadolinium-EOB-DTPA-enhanced MRI has higher accuracy than DWI in the detection of small metastases.
