發(fā)布時間：2018-03-17 17:24

  本文選題：肝疾病　切入點：磁共振成像　出處：《中國醫(yī)學(xué)影像學(xué)雜志》2015年05期 　論文類型：期刊論文

【摘要】：目的評價擴(kuò)散加權(quán)成像(DWI)在肝局灶性病變(FLL)檢出中的價值。資料與方法選取205例FLL患者共310個病灶,均行T2WI、動態(tài)增強(qiáng)(DCE)及DWI檢查,b值分別為100 s/mm2及600 s/mm2,2名評估者閱讀每個病例所有序列圖像,并對各序列對病灶的檢出進(jìn)行評分。分析2名評估者評估結(jié)果的一致性,比較各序列對病變檢出的信心評分以及各序列對各類病變的檢出率。結(jié)果對于T2WI、高b值DWI、低b值DWI、DCE序列的檢出信心評分,2名評估者的一致性為一般或好(Kappa=0.71、0.85、0.82、0.64,P0.05)。對FLL檢出信心的平均評分,高b值DWI及低b值DWI均明顯高于T2WI(P0.01),但都低于DCE(P0.01)。DWI對FLL的檢出評分及檢出率均明顯高于T2WI(86.5%比70.3%,P0.01),但低于DCE(91.6%,P0.05);對直徑≤2 cm的惡性小病灶,DWI的檢出率顯著高于T2WI(P0.01),而與DCE相似(P0.05),DWI+DCE的檢出率明顯高于DWI或DCE(P0.01)。結(jié)論 DWI對肝局灶性病變的檢出率高于T2WI,并可提高DCE對惡性小病灶的檢出,應(yīng)作為肝臟MRI檢查的常規(guī)序列。
[Abstract]:Objective to evaluate the value of diffusion-weighted imaging (DWI) in the detection of focal hepatic lesions (FLL). Materials and methods: a total of 310 lesions were selected from 205 patients with FLL. Two evaluators with T2WI, dynamic enhanced DCEE (DCE) and DWI (100s / mm2 and 600s / mm2) read all the sequence images of each case, and scored the lesions detected by each sequence. The consistency of the evaluation results between the two evaluators was analyzed. Results for T2WI, high b DWI, low b DWI, low b DWI, the consistency of two evaluators was: general or good Kappa 0.71 / 0.820.64P 0.05. the consistency of the two evaluators was as follows: 0.71% 0.81% 0.820.64P0.050.Results for T2WI, high b value DWI, low b value DWI, the consistency of two evaluators was 0.71% or 0.71%, 0.820.64P0.05. The average score of confidence, Both high b value DWI and low b value DWI were significantly higher than that of T2WII P0.01T, but lower than that of DCE(P0.01).DWI in detecting FLL. The detection rate and detection rate of FLL were significantly higher than that of T2WIJ 86.5% vs 70.3%, but lower than that of DCE91.6 / P0.05.The detection rate of malignant small lesions with diameter 鈮，

本文編號：1625731