0.05);高b值時,肝臟良、惡性腫瘤的ADC值間比較,差異有統(tǒng)計學意義(P[關鍵詞] 核磁"/>
蔡彩云 劉建成 陳文錦
[摘要] 目的 探討腫瘤標志物聯(lián)合多b值彌散加權成像(DWI)MR多期動態(tài)增強成像對肝臟腫瘤的定性診斷價值。 方法 選取2018年1月~2020年1月在我院確診的肝臟腫瘤患者為研究對象,根據(jù)腫瘤性質分為良性腫瘤組和惡性腫瘤組,均常規(guī)行多b值DWI MR多期動態(tài)增強成像掃描,結合血清腫瘤標志物水平進行綜合分析。結果 低b值時,肝臟良、惡性腫瘤的ADC值間比較,差異無統(tǒng)計學意義(P>0.05);高b值時,肝臟良、惡性腫瘤的ADC值間比較,差異有統(tǒng)計學意義(P<0.05)。腫瘤標志物聯(lián)合多b值DWI MR多期動態(tài)增強成像對惡性肝臟腫瘤的陽性診斷率為96.7%,而僅單獨采用MRI的診斷陽性率為80.0%,差異有統(tǒng)計意義(P<0.05)。ROC曲線分析進一步證實MRI聯(lián)合腫瘤標志物對惡性腫瘤診斷價值較高(ROC曲線下面積為0.930,P=0.021)。 結論 腫瘤標志物聯(lián)合多b值DWI MRI多期動態(tài)增強掃描有利于提高肝臟惡性腫瘤的診斷陽性率,可以作為肝臟惡性腫瘤診斷的有效工具。
[關鍵詞] 核磁共振成像;彌散加權成像;腫瘤標志物;肝臟腫瘤
[中圖分類號] R445.2? ? ? ? ? [文獻標識碼] B? ? ? ? ? [文章編號] 1673-9701(2020)29-0125-04
[Abstract] Objective To explore the value of tumor markers combined with multi-b value diffusion weighted imaging (DWI) MR multi-phase dynamic enhanced imaging in the qualitative diagnosis of liver tumors. Methods The patients with liver tumor who were diagnosed in our hospital from January 2018 to January 2020 were selected as the study subjects. According to the nature of the tumor, the patients were divided into a benign tumor group and a malignant tumor group. MRI multi-b value DWI multi-phase dynamic enhancement scans were performed routinely. A comprehensive analysis was carried out on the basis of the serum tumor marker levels. Results When the b value was low, there was no statistically significant difference between the ADC values of benign and malignant tumors of the liver (P>0.05); when the value of b was high, the difference between ADC values of benign and malignant tumors of the liver was statistically significant (P<0.05). The positive rate of tumor markers combined with MRI multi-b value DWI multi-phase dynamic enhancement scan for malignant liver tumors was 96.7%. The positive rate of MRI diagnosis alone was 80.0%, and the difference was statistically significant(P<0.05). ROC curve analysis also further confirmed that MRI combined with tumor markers was of great value in the diagnosis of malignant tumors(the area under the ROC curve was 0.930, P=0.021). Conclusion The combination of tumor markers and multi-b value DWI MRI multi-phase dynamic enhancement scan is conducive to improving the positive diagnosis rate of liver malignant tumors, and can be used as an effective tool for the diagnosis of liver malignant tumors.
[Key words] Magnetic resonance imaging; Diffusion weighted imaging (DWI); Tumor markers; Liver tumor
肝臟惡性腫瘤位居世界惡性腫瘤死亡率的第三位,我國每年約有50萬人確診[1]。早期診斷和治療對肝臟腫瘤的預后意義重大。資料顯示,42.0%的肝臟腫瘤早期局限于單一肝段。局灶性肝臟腫瘤患者五年生存率接近30.0%[2-3]。因此,有效區(qū)分惡性與良性肝臟結節(jié)對患者的治療規(guī)劃和預后具有十分重要的意義。
ADC值受b值和感興趣區(qū)域選擇的影響,且對直徑<2 cm結節(jié)的診斷存在假陽性可能[12],因此本研究嘗試結合其他檢查以提高肝臟惡性腫瘤的診斷陽性率。近年來眾多文獻報道了多種肝癌有關的血清標志物,包括AFP、CA19-9、高爾基體蛋白73(GP73)、甲胎蛋白異質體、肝細胞生長因子(HGF)、血管內(nèi)皮生長因子(VEGF)、異常凝血酶原(DCP)等。而其中診斷特異性和靈敏度最高的是AFP和CA19-9[7,13]。AFP主要針對肝細胞肝癌,每隔半年檢測1次,其對肝癌篩查及預后判斷均具有較大的臨床價值。然而有研究顯示,部分肝癌患者(如膽管細胞癌等)的AFP并不升高,建議采用影像學聯(lián)合血清AFP檢查的方法,可以降低肝癌漏診率[14]。CA19-9作為一種非特異性腫瘤相關抗原,在健康人群體內(nèi)處于低水平,而在消化道惡性腫瘤患者中存在異常增高現(xiàn)象。CA19-9檢測有利于發(fā)現(xiàn)AFP陰性的肝癌患者,提高肝癌診斷陽性率[15]。本研究結果顯示,惡性腫瘤組血AFP、CA19-9濃度分別為(65.90±8.65)μg/L、(50.40±7.29)U/mL,顯著高于良性腫瘤組的(19.10±3.85)μg/L、(26.03±6.02)U/mL,兩組比較,差異有統(tǒng)計學意義(P<0.05),因此本研究同時選用AFP和CA19-9兩個腫瘤標志物。通過比較分析單獨MRI檢測和MRI聯(lián)合AFP/CA19-9檢測對肝臟惡性腫瘤的診斷陽性率,結果顯示多b值DWI MR多期動態(tài)增強成像與腫瘤標志物聯(lián)合檢測對惡性腫瘤的陽性診斷率為96.7%,而僅依靠MRI的陽性診斷率為80.0%,差異有統(tǒng)計學意義(P<0.05)。ROC曲線分析也進一步證實,MRI聯(lián)合腫瘤標志物對惡性腫瘤的診斷價值較單獨MRI檢測更高(ROC曲線下面積為0.930,P=0.021)。
綜上所述,腫瘤標志物聯(lián)合多b值DWI MRI多期動態(tài)增強掃描有利于提高肝臟惡性腫瘤的診斷陽性率,對臨床鑒別肝臟良、惡性腫瘤具有一定的實際價值。
[參考文獻]
[1] An L,Zeng HM,Zheng RS,et al.Liver cancer epidemiology in China,2015[J].Zhonghua Zhongliu Zazhi,2019,41(10):721-727.
[2] Ji M,Liu Z,Chang ET,et al.Mass screening for liver cancer:Results from a demonstration screening project in Zhongshan City,China[J].Sci Rep,2018,8(1):12 787-12 795.
[3] Qu CF,Chen TY,Wang YT,et al.Primary prevention model of liver cancer in rural China[J].Zhonghua Zhongliu Zazhi,2018,40(7):481-489.
[4] Li J,Yang Y.Clinical study of diffusion-weighted imaging in the diagnosis of liver focal lesion[J].J Med Syst,2019,43(3):43-48.
[5] Mürtz P,Sprinkart AM,ReickM,et al.Accurate IVIM model-based liver lesion characterisation can be achieved with only three b-value DWI[J].Eur Radiol,2018,28(10):4418-4428.
[6] Wu LF,Rao SX,Xu PJ.Pre-TACE kurtosis of ADC(total) derived from histogram analysis for diffusion-weighted imaging is the best independent predictor of prognosis in hepatocellular carcinoma[J].Eur Radiol,2019,29(1):213-223.
[7] Ma B,Liu X,Yu Z.The effect of high intensity focused ultrasound on the treatment of liver cancer and patients' immunity[J].Cancer Biomark,2019,24(1):85-90.
[8] Li S,Shi S,Li A,et al.Diffusion-weighted magnetic resonance imaging in assessment of primary liver cancer after HIFU treatment[J].J Coll Physicians Surg Pak,2019,29(4):305-308.
[9] Stein D,Goldberg N,Domachevsky L,et al.Quantitative biomarkers for liver metastases:Comparison of MRI diffusion-weighted imaging heterogeneity index and fluorine-18-fluoro-deoxyglucose standardised uptake value in hybrid PET/MR[J].Clin Radiol,2018,73(9):832.e17-832.e22.
[10] 王殿峰,張鳳翔,盧東霞,等.多b值DWI對肝臟占位性病變的診斷價值[J].中國中西醫(yī)結合影像學雜志,2017,15(3):315-317.
[11] 劉巖.多b值DWI聯(lián)合MRI動態(tài)增強掃描對診斷肝細胞癌的價值探討[J].中國現(xiàn)代醫(yī)生雜志,2018,56(24):119-122.
[12] 于洪遠,劉淑明,李兵.AFP、AFU、TSGF聯(lián)合檢測在早期肝癌中的診斷效能[J].癌癥進展,2019,15(2):10-14.
[13] 梁美妹,林秋艷,柯振符.腫瘤特異性生長因子與AFP、CEA聯(lián)合檢測在原發(fā)性肝癌早期診斷的意義[J].現(xiàn)代診斷與治療,2018,12(22):3652-3654.
[14] 楊紹蕊.血清腫瘤標志物聯(lián)合血常規(guī)指標檢測在原發(fā)性肝癌診斷中的應用效果分析[J].世界復合醫(yī)學,2019, 5(8):145-147.
[15] Kudo M,Ikeda M,Ueshima K.Response evaluation criteria in cancer of the liver version 5(RECICL 2019 revised version)[J].Hepatol Res,2019,49(9):981-989.
(收稿日期:2020-04-14)