本文選題：癌　切入點：肝細胞　出處：《中國醫(yī)學(xué)影像學(xué)雜志》2017年11期

【摘要】：目的乙肝肝硬化背景下,探討肝臟影像報告與數(shù)據(jù)系統(tǒng)(LI-RADS,2014版)定義的2個輔助征象(T2WI輕-中度高信號與擴散受限)對肝細胞癌(HCC)的診斷價值。資料與方法回顧性分析北京友誼醫(yī)院2012年1月—2016年11月69例HCC患者共77個分類到LI-RADS 3~5的病灶,大小1.1 cm×0.7 cm~12.7 cm×9.1 cm。圖像包括MRI平掃加多期動態(tài)增強掃描。由2名影像科醫(yī)師分析圖像,如有分歧結(jié)合肝臟容積加速采集加多期動態(tài)增強掃描達成共識。比較T2WI和擴散加權(quán)成像(DWI)序列的噪聲比(CNR)及表觀擴散系數(shù)(ADC)圖的差異,以及兩種征象的識別是否一致。結(jié)果乙肝肝硬化背景下,T2WI輕-中度高信號與擴散受限對識別分類到LI-RADS 3~5的病灶差異無統(tǒng)計學(xué)意義(P0.05),但是b=600 s/mm~2較b=0的DWI識別率更高(70.1%比61.0%,P0.05)。CNR在DWI(b=0、600 s/mm~2)序列上均較T2WI序列上高(P0.01)。病灶最大徑≥2 cm較最大徑2 cm病灶的ADC值更低[(1.37±0.51)×10~(-3) mm~2/s比(1.57±0.37)×10~(-3) mm~2/s,P0.05]。結(jié)論T2WI輕-中度高信號和擴散受限檢出病灶的敏感性方面無顯著差異。但是由于CNR不同,b=600 s/mm~2的DWI對病灶顯示更加明顯,在實際工作中可以優(yōu)先觀察。
[Abstract]:Objective under the background of hepatitis B cirrhosis, To explore the diagnostic value of two auxiliary signs defined by liver imaging reporting and data system (LI-RADS2014) for hepatocellular carcinoma (HCC) on T2WI with mild to moderate hyperintensity and diffusion limitation. The data and methods were retrospectively analyzed in Beijing Friendship Hospital 2012 1. From June to November 2016, a total of 77 lesions of 69 HCC patients were classified into LI-RADS 3 or 5 lesions. The size was 1. 1 cm 脳 0. 7 cm~12.7 cm 脳 9. 1 cm. The images included MRI plain scan and multi-phase dynamic enhancement scan. The images were analyzed by 2 imaging physicians, and 1. 1 cm 脳 0. 7 cm~12.7 cm 脳 9. 1 cm. If there is a consensus on the combination of T2WI and DWI, the difference of noise ratio and apparent diffusion coefficient (DWI) of T2WI and diffusion-weighted imaging (DWI) sequences are compared. Results in the background of hepatitis B cirrhosis, there was no significant difference between mild to moderate hyperintense and diffusion-limited T2WI in the identification of lesions classified to LI-RADS 3M 5. However, the DWI recognition rate of BG600 s/mm~2 was higher than that of BX 0. 70.1% was higher than 61.0% in DWI(b=0600 s / mm-2) sequence. The ADC value of lesion with maximum diameter 鈮，

本文編號：1681706