CAJ | 학술논문

目的探讨1.5TMR扩散加权成像（DWI）优化b值在颈髓病变中的检出率的价值。方法收集我院疑有或确诊颈髓病变患者60例行MRI及DWI检查，b值取0、300、500、1000s/mm2。计算DWI的病灶检出率，测量颈段脊髓表观扩散系数( ADC)值并分析各组DWI图像及ADC图像质量，对比不同b值对成像效果的影响。结果 DWI对病变的检出率为95.8%（57/60），60例受检者中57例均获得较满意的DWI和ADC图像。随着b值由0 s/mm2升高至1000 s/mm2，颈髓与脑脊液信噪比逐渐降低，颈髓脑脊液对比噪声比b值为500 s/mm2时最高，此后逐渐降低，且ADC参考范围较稳定。结论b值为500 s/mm2时，颈段脊髓DWI图像质量最好，可以获得较满意的DWI及ADC图像，病变的检出率最高。
목적탐토1.5TMR확산가권성상（DWI）우화b치재경수병변중적검출솔적개치。방법수집아원의유혹학진경수병변환자60례행MRI급DWI검사，b치취0、300、500、1000s/mm2。계산DWI적병조검출솔，측량경단척수표관확산계수( ADC)치병분석각조DWI도상급ADC도상질량，대비불동b치대성상효과적영향。결과 DWI대병변적검출솔위95.8%（57/60），60례수검자중57례균획득교만의적DWI화ADC도상。수착b치유0 s/mm2승고지1000 s/mm2，경수여뇌척액신조비축점강저，경수뇌척액대비조성비b치위500 s/mm2시최고，차후축점강저，차ADC삼고범위교은정。결론b치위500 s/mm2시，경단척수DWI도상질량최호，가이획득교만의적DWI급ADC도상，병변적검출솔최고。
Objective Discuss MR 1.5T dif usion weighted imaging (DWI) can optimize the b value in the value of the detection rate of cervical spinal lesions. Methbods Collect our suspected or confirmed cervical spinal lesions of 60 patients with routine MRI and DWI examination, can b value= 0, 300, 500, 300 s/was. Calculating DWI lesion detection rate, and can measure the neck section of the spinal cord apparent diffusion coef icient (ADC) value and analyze each group DWI images and ADC can image quality, contrast dif erent b values on the imaging ef ect. Results DWI for can lesion detection rate was 95.8% (57/60), 60 cases of client in 57 cases obtained satisfactory DWI and ADC can image. As the 0 s/b value was increased to 1000 s/was that the spinal cord and cerebrospinal fluid signal-to-noise ratio decreases, spinal cerebrospinal fluid contrast noise ratio b value=500 s/mm2 was the highest, then gradual y decreased, and the ADC reference range is relatively stable. Conciusion Value of 500 b/s was, the neck section of the spinal cord DWI image quality is best, can get satisfactory DWI and ADC can image, lesion detection rate is highest.