MR及动态增强联合表观扩散系数对筛窦腺癌的诊断价值  

The Conventional and Dynamic Contrast-Enhanced MR Imaging Findings with ADC of Ethmoid Sinus Cancers

作　　者：卢超[1] 李洋[2] 

机构地区：[1]郑州大学附属洛阳中心医院影像科,洛阳471009 [2]青岛大学附属医院放射科,266003

出　　处：《临床放射学杂志》2016年第6期862-866,共5页Journal of Clinical Radiology

摘　　要：目的评价常规MRI及动态增强联合表观扩散系数对筛窦腺癌的诊断价值。方法回顾性分析8例经手术病理证实的筛窦腺癌的MRI及动态增强征象。8例均行常规MRI和MR动态增强扫描,后处理得到TIC曲线及半定量参数SI_(pre)、SI_(max)、SI_(peak)、T_(peak)、MSI;8例均行MR DWI检查,测量病变实性部分ROI内的表观扩散系数值。结果常规MRI表现:8例均表现为筛窦软组织肿块,呈等、稍长T_1WI及等T_2WI信号,累及眼眶骨壁4例,眼前部内容物1例,累及蝶窦1例,累及鼻部皮肤2例。MRI动态增强表现:8例病变均明显强化,TIC曲线整体呈速升-平缓型,SI_(pre)平均值为20,SI_(max)平均值为962.5,SI_(peak)平均值为867.3,T_(peak)平均为第5个时相,MSI平均值为42.4%。表观扩散系数平均值为1.16×10^(-3)mm^2/s。结论 MRI及动态增强联合表观扩散系数有利于筛窦腺癌的定位、定性诊断。Objective To evaluate the diagnostic value of conventional and dynamic contrastenhanced MR and apparent diffusion coefficient in ethmoid sinus cancers.Methods The conventional and dynamic contrastenhanced MRI features of eight patients of ethmoid sinus cancers that were histopathologically confirmed,were analyzed retrospectively.conventional and dynamic contrast-enhanced MRI scanning were performed in all eight patients.Calculated values included SI_（pre）,,SI_（max）,SI_（peak）,T_（peak） and MSI of the time-intensity Curves（TICs）.All patients underwent preoperative routine MRl with DWI,the ADC values were measured in ROI within the solid mass.Results On MRI scanning,soft tissue mass occured in the ethmoid sinus and the tumor showed iso or long T_1WI and iso T_2WI signal in all eight cases.The lesions involved in the orbital walls（n = 4）,the preocular content（n =1）,the sphenoid sinus（n = 1）,skin of nose（n = 1）.Dynamic-enhanced MRI showed obvious enhancement.TICs showed speed up-flat.SI_（pre） was 20,SI_（max） was 962.5.SI_（peak） was 867.3,Tpeakwas in the fifth period and MSI was 42.4%.ADC was 1.16 × 10^（-3）mm^2/s.Conclusion Conventional and dynamic contrast-enhanced MRI combined with apparent diffusion coefficient is useful for the diagnosis of ethmoid sinus cancers.

关 键 词：筛窦 腺癌 磁共振成像 表观扩散系数 

分 类 号：R445.2[医药卫生—影像医学与核医学] R739.62[医药卫生—诊断学]