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3.0T对比增强动态及扩散加权磁共振成像评估早期鼻咽癌

Contrast-enhanced dynamic and diffusion-weighted magnetic resonance imaging at 3.0 T to assess early-stage nasopharyngeal carcinoma.

作者信息

Ni Liangping, Liu Ying

机构信息

Department of Radiology, Anhui Medical University Affiliated Anhui Provincial Hospital, Hefei, Anhui 230001, P.R. China.

出版信息

Oncol Lett. 2018 Apr;15(4):5294-5300. doi: 10.3892/ol.2018.7948. Epub 2018 Feb 5.

Abstract

The present study aimed to assess early-stage nasopharyngeal carcinoma (NPC) with dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) and diffusion-weighted imaging (DWI) at 3.0 T. A total of 44 patients newly diagnosed with NPC were included in the present study. All patients underwent MR examination at 3.0 T using DCE-MRI and DWI. The volume transfer constant ( ), flux rate constant between extravascular extracellular space and plasma ( ), the volume of extravascular extracellular space per unit volume of tissue ( ) and the apparent diffusion coefficient (ADC) of tumours were investigated. Furthermore, the correlation between clinical stages and ADC value and were analysed. The diagnostic accuracy of and ADC were estimated using receiver operating characteristic curves. NPC stage correlated positively with and negatively with ADC values. Additionally, tumour negatively correlated with ADC value. The sensitivity and accuracy of combined and ADC in distinguishing between stage II and stage III and stage III and IV were higher than the values of either measurement used separately. The present study suggested that and ADC derived from DCE-MRI and DWI may be useful to detect stage early NPC accurately. and ADC in combination were superior than either alone.

摘要

本研究旨在利用3.0 T动态对比增强磁共振成像(DCE-MRI)和扩散加权成像(DWI)评估早期鼻咽癌(NPC)。本研究共纳入44例新诊断的NPC患者。所有患者均在3.0 T条件下接受了使用DCE-MRI和DWI的MR检查。研究了肿瘤的容积转移常数( )、血管外细胞外间隙与血浆之间的流速常数( )、单位体积组织的血管外细胞外间隙容积( )以及表观扩散系数(ADC)。此外,分析了临床分期与ADC值以及 之间的相关性。使用受试者工作特征曲线评估 及ADC的诊断准确性。NPC分期与 呈正相关,与ADC值呈负相关。此外,肿瘤 与ADC值呈负相关。联合 使用 及ADC区分II期与III期以及III期与IV期的敏感性和准确性高于单独使用任何一种测量值。本研究表明,源自DCE-MRI和DWI的 及ADC可能有助于准确检测早期NPC。 与ADC联合使用优于单独使用任一项。

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