本文選題：血管周圍間隙 + 腔隙性梗死灶�。� 參考：《中國醫(yī)學創(chuàng)新》2016年08期

【摘要】：目的:觀察總結血管周圍間隙和腔隙性梗死灶在磁共振上的表現(xiàn)特點,以鑒別兩種疾病,提高確診率。方法:選擇經臨床隨訪并證實的腔隙性腦梗死患者50例及血管周圍間隙患者40例作為研究對象,綜合對比分析其磁共振影像形態(tài)、大小、部位、邊界、信號、占位效應等表現(xiàn)。結果:VRS在MRI上表現(xiàn)為邊界清楚的圓形、卵圓形或線狀、管狀結構,與穿支血管走行一致,在T1WI為低信號,T2WI為高信號,FLAIR序列為低信號,無對比劑增強效應和占位效應。腔隙性梗死灶在T1WI呈低信號,T2WI呈高信號;在FLAIR序列上表達高信號,慢性期為低信號,周圍可見薄邊高信號影;在DWI急性期呈高信號,隨時間推移信號減低,變?yōu)榈刃盘�、低信�?MRI增強掃描周圍見輕度環(huán)形強化或無強化。結論:在磁共振影像上,可通過觀察病灶信號、形態(tài)和序列等對血管周圍間隙和腔隙性梗死灶進行鑒別診斷。
[Abstract]:Objective: to observe and summarize the MRI features of perivascular space and lacunar infarction in order to differentiate the two diseases and improve the diagnostic rate. Methods: 50 patients with lacunar cerebral infarction and 40 patients with perivascular space were selected as subjects. The MRI features such as shape, size, location, boundary, signal and space occupying effect were compared and analyzed. Results on MRI, the VRS showed circular, oval or linear, tubular structure, which was consistent with the perforating vessels. In T1WI, the hypointensity flair sequence was hypointensity on low signal T2WI, and there was no contrast enhancement effect or space occupying effect. The lacunar infarct showed high signal intensity on T1WI with low signal intensity on T _ 2WI, high signal intensity on FLAIR sequence, low signal intensity in chronic phase and high signal intensity around DWI. In the acute phase of DWI, the signal intensity decreased with time and became isointense. Low-intensity Mr enhanced MRI showed mild circular enhancement or no enhancement around the scan. Conclusion: Mr imaging can be used to differentiate perivascular space and lacunar infarction by observing the signal, morphology and sequence of the lesions.
【作者單位】： 中南大學湘雅二醫(yī)院深圳醫(yī)院(廣東省深圳市蛇口人民醫(yī)院);中南大學湘雅二醫(yī)院;
【分類號】：R743.3

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本文編號：1891107