目的 探讨磁共振磁敏感加权成像(SWI)对脑膜、脑转移瘤的诊断价值。方法 随机选取2016年3月—2018年3月我院收治的经临床、病理确诊的50例脑膜、脑转移瘤患者为研究对象,所有患者除常规行T1WI、T2WI扫描及T1WI增强扫描检查外,额外进行SWI检查。观察不同来源脑转移瘤转移部位、肿瘤实质信号在不同成像序列上的特征及对瘤内血管情况和出血状况的判断。结果 脑转移瘤的发生部位多为顶叶(29.75%)和枕叶(20.66%),就血供区域而言,多发生于中动脉(45.45%)和颈内动脉供血区域(38.02%)。不同MRI成像序列中肿瘤信号特征比较,显示均有差异(P<0.001)。其中,肺癌脑转移瘤T1WI呈低信号(62.96%),胃癌T2WI呈现高信号(68.75%),SWI成像序列上多显示为混杂信号。SWI序列成像显示瘤内出血55例(45.45%),显示引流血管16条,瘤内出血及肿瘤血管检出率均明显高于T1WI平扫检查,差异有统计学意义(P<0.05)。结论 不同来源的脑转移瘤MR的表现不同,为逆向推测脑转移瘤来源提供依据,同时SWI是对常规序列的重要补充,尤其是在脑瘤出血和血管检出上有重要作用,值得临床推广使用。

Objective To investigate the diagnostic value of susceptibility-weighted imaging(SWI) in meningiomas and brain metastases. Methods 50 cases of clinically and pathologically confirmed patients with meningioma and brain metastasis admitted to our hospital from March 2016 to March 2018 were randomly selected as the study subjects. All patients received routine T1WI, T2WI scan and T1WI enhanced scan, and additional SWI examination was performed. We observed the characteristics of metastatic sites and tumor parenchymal signals in different imaging sequences of brain metastatic tumors from different sources and to judge the status of intramedullary blood vessels and bleeding. Results The majority of brain metastatic tumors occurred in the parietal lobe (29.75%) and occipital lobe (20.66%). In terms of the blood supply region, the majority occurred in the middle artery (45.45%) and the blood supply region of the lower artery (38.02%). Comparison of tumor signal characteristics in different MRI imaging sequences showed differences, P<0.001. Among them, T1WI of brain metastatic tumor of lung cancer presented significantly low signal (62.96%), T2WI of gastric cancer presented high signal (68.75%), and SWI imaging sequence mostly showed mixed signal.SWI sequence imaging were showed in 55 cases (45.45%) of intracranial hemorrhage and 16 drainage vessels. The detection rate of intracranial hemorrhage and tumor blood vessels was higher than that of T1WI plain scan, with statistically difference (P<0.05). Conclusion MR manifestations of brain metastatic tumors from different sources are different, providing a basis for reverse speculation of the source of brain metastatic tumors. At the same time, SWI is an important supplement to routine sequences, especially in the hemorrhage of brain tumors and the detection of blood vessels, which is worthy of clinical promotion and use.

目的 探究磁敏感加权成像(SWI)对帕金森病(PD)与血管性帕金森综合征(VPS)的鉴别诊断价值。方法 回顾性分析我院2013年1月—2016年12月收治的30例PD患者(PD组)和30例VPS患者(VPS)组SWI分析结果,比较两组患者的脑椎体外系各核团的相位值差异,同时将两组患者的测量值与来我院行常规体检的正常者作为对照组进行测量比较。结果 PD组患者的黑质致密带(SNc)、苍白球(GP)、壳核(PUT)相位值较VPS组、对照组更低,组间数据对比有差异(P<0.05);而对照组的SNc、GP、PUT的相位值与VPS组相比无差异(P>0.05);三组对象的红核(RN)、尾状核(CN)测量值无差异(P>0.05);采用Hoehn&Yahr对PD患者和VPS进行分级后发现,各级PD患者SNc相位值之间差异均有统计学意义(P＜0.05),VPS组Ⅰ~Ⅱ级、III级与IV级患者相比,SNc、PUT、尾状核(CN)有统计学差异(P<0.05),而RN相位值无差异(P>0.05)。结论 采用磁敏感加权成像对PD患者和VPS患者的椎体外系各核团的相位值进行测量,能对两者的鉴别起到较大的参考价值。

Objective To explore the value of magnetic susceptibility weighted imaging (SWI) in the differential diagnosis of Parkinson's disease (PD) and vascularized Parkinson's syndrome (VPS). Methods The results of SWI analysis of 30 patients with PD (PD) and 30 patients with VPS (VPS) from January 2013 to December 2016 were retrospectively analyzed. The results were compared between the two groups. Of the phase value of the difference between the two groups of patients with the measured values and routine examination of our hospital as a control group for comparison. Results The phase values of the substantia nigra (SNc), globus pallidus (GP) and crustal nucleus (PUT) were significantly lower in the PD group than in the VPS group and the control group (P <0.05).There was no significant difference in the GP and PUT values between the control group and the VPS group (P> 0.05).There was no significant difference in the red nuclei (RN) between the three groups (P> 0.05).There was significant difference in SNc phase values between PD patients at all levels (P <0.05). Compared with patients with grade IV, grade I and II were higher than those of patients with grade IV (P <0.05), and the difference was statistically significant (P <0.05) between PD patients and VPS. (P <0.05), but there was no significant difference (P> 0.05) between the PUT and the caudate nucleus (CN). Conclusion The phase value of the nucleus of the vertebral body in PD patients and VPS patients was measured by magnetic susceptibility weighted imaging, which could be used as a reference for the identification of the two.