MRI与CT诊断桥小脑角区占位性病变的临床价值以及影像学特征  

The clinical value and imaging features of MRI and CT in the diagnosis of space-occupying lesions in the cerebellopontine angle

作　　者：卢昊宁 张晓琴 车宏伟 刘骁 LU Hao-ning;ZHANG Xiao-qin;CHE Hong-wei(Department of Radiology,People’s Hospital of Inner Mongolia Autonomous Region,Hohhot 010017,China)

机构地区：[1]内蒙古自治区人民医院影像医学科,010017

出　　处：《中国实用医药》2021年第26期4-7,共4页China Practical Medicine

摘　　要：目的探讨分析桥小脑角区(CPA)占位性病变患者临床诊断中磁共振成像(MRI)以及CT诊断的临床价值以及影响学特征。方法90例经手术病理确诊为桥小脑角区占位性病变患者,均接受MRI、CT检测。比较两种检测方式的病变检出率、患者接受度,分析MRI检测特征性表现(病变肿瘤的位置、囊变以及信号等情况)。结果MRI检测对三叉神经瘤、脑膜瘤、蛛网膜囊肿、胆脂瘤、听神经瘤的检出率为100.00%(90/90),高于CT的73.33%(66/90),差异有统计学意义(P<0.05)。三叉神经瘤表现为囊变、跨中后颅窝以及幕上脑室有积水;脑膜瘤表现为内听道以及周围蛛网膜下腔出现明显扩张、有弥散加权成像(DWI)高信号、跨中后颅窝、幕上脑室有积水;胆脂瘤表现为囊变、有DWI高信号以及跨中后颅窝;蛛网膜囊肿表现为囊变;听神经瘤表现为囊变、内听道扩张、周围蛛网膜下腔出现扩张、幕上脑室有积水。MRI检测的患者接受度96.67%高于CT的88.89%,差异具有统计学意义(P<0.05)。结论在桥小脑角区占位性病变患者的临床诊断中,MRI的检测准确率较高,可以对患者病变位置、信号以及组织结构进行准确显示,临床诊断价值较高。Objective To discuss and analyze the clinical value and imaging features of MRI and CT in the diagnosis of space-occupying lesions in the cerebellopontine angle(CPA).Methods 90 patients with surgical pathologically confirmed space-occupying lesions in the cerebellopontine angle,all of whom underwent MRI and CT.The lesion detection rate and patient acceptance of the two detection methods were compared,and the characteristic performance of MRI detection(the location of lesion tumor,cystic change,signal,etc.)was analyzed.Results The detection rates of MRI for trigeminal neuroma,meningioma,arachnoid cyst,cholesteatoma,and acoustic neuroma was 100%(90/90),which was higher than 73.33%(66/90)of CT,and the difference was statistically significant(P<0.05).Trigeminal neuroma was manifested as cystic degeneration,mid-posterior cranial fossa,and the presence of hydrops in the supratentorial ventricle;meningioma was manifested as obvious dilation of the internal auditory canal and surrounding subarachnoid space,diffusion-weighted imaging(DWI)high signal,mid-posterior cranial fossa,and the presence of hydrops in the supratentorial ventricle;cholesteatoma was manifested as cystic degeneration,DWI high signal,and mid-posterior cranial fossa;arachnoid cysts was manifested as cystic degeneration;acoustic neuroma was manifested as cystic degeneration,dilation of the internal auditory canal and surrounding subarachnoid space,and the presence of hydrops in the supratentorial ventricle.The patient acceptance of MRI 96.67%was higher than 88.89%of CT,and the difference was statistically significant(P<0.05).Conclusion In the clinical diagnosis of patients with space-occupying lesions in the cerebellopontine angle,MRI has a high accuracy rate and can accurately display the location,signal and tissue structure of the lesions,which has a high clinical diagnostic value.

关 键 词：桥小脑角区占位性病变 磁共振成像 CT 三叉神经瘤 蛛网膜囊肿 

分 类 号：R445.2[医药卫生—影像医学与核医学] R816.1[医药卫生—诊断学]