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目的比较常规磁共振成像(MRI)检查和弥散加权磁共振成像(DWI)检查技术对多发性硬化(MS)的诊断价值。方法采用Siemens 1.5T磁共振机对35例经临床和实验室检查确诊的MS病例进行T1WI、T2WI扫描检查及DWI检查;并将3种序列所见进行比较。结果1.T2WI像共发现病灶455个,T1WI发现病灶378个,DWI检见病灶295个;2.T1WI所显示病灶的信号多为低或略低信号,T2WI的病灶显示为高信号,DWI在急性期病灶显示为略高信号,在慢性期可显为等信号或低信号。结论常规磁共振的MS病灶阳性检出率T2WI优于T1WI;DWI可以明确评定MS病灶是否为急性期,是诊断MS的有效影像学方法。
Objective To compare the diagnostic value of conventional magnetic resonance imaging (MRI) and diffusion weighted magnetic resonance imaging (DWI) in the diagnosis of multiple sclerosis (MS). Methods The T1WI and T2WI scan and DWI were performed on 35 MS patients diagnosed by clinical and laboratory tests using Siemens 1.5T magnetic resonance imaging machine. The findings of the three sequences were compared. There were 455 lesions in T2WI, 378 lesions in T1WI and 295 lesions in DWI. 2. The lesions in T1WI showed low or slightly low signal, T2WI showed high signal, DWI in Acute lesions showed slightly higher signal in the chronic phase may be equal signal or low signal. Conclusion The positive detection rate of MS lesions in conventional MRI is better than that of T1WI. DWI can be used to assess whether MS lesions are acute or not. It is an effective imaging method for the diagnosis of MS.