磁共振波谱技术的质量控制和临床应用  

Quality control and clinical application of MRS technology

作　　者：陈建[1] 王苇[1] 何玲[1] 袁红梅[1] 杜先懋[1] 李澄[1] 

机构地区：[1]扬州市第一人民医院,江苏省扬州市225001

出　　处：《医疗卫生装备》2007年第11期68-69,76,共3页Chinese Medical Equipment Journal

摘　　要：目的:调整波谱空间定位和扫描参数,观察其对图像质量的影响,并总结应用要点实践于临床。方法:对65例头颅检查的受检者行磁共振波谱扫描,有目的地改变感兴趣区域的位置、大小和其他参数设置,对扫描后显示的图像质量进行初步评价,探讨参数设置与波谱质量之间的关系。结果:65例患者中有60例波谱谱线形态较好,代谢物峰值位置正常;5例谱线形态变形,波峰漂移较大。记录的结果数据中,半高宽5～23,水抑制级别92～99。谱线形态较好的60例中,半高宽均在系统提示的范围内;5例谱线差的半高宽为7、9、16和23,水抑制级别为95、96、97。结论:获得高质量的波谱,需要较高的磁场均匀度,而半高宽是反映均匀度的一个重要指标。Objective To observe the changes of image quality after adjusting the space location and the scan parameters of MRS. Methods 65 patients were scanned with magnetism resonance spectrum head examination. The location, size and other scan parameters of the region interested were changed intentionally. The quality of the images was preliminarily evaluated and the relationship between the parameters and the quality of MRS were probed. Results In the 65 cases, 60 were with better shape of wave lines and metabolite peak positions, 5 with aberrant lines and shifted peaks. Among the recorded data： the range of half high width value is 5-23, water suppression level 92-99. With the 60-case group, all those half high width values were within the given range of the system, on the contrast, within the 5-case group half high width values were 7, 9, 16 and 23, and water suppression levels were 95, 96, 97. Conclusion High-quality wave spectrum depends on high uniformity of magnetic field. The value of half high width is an important factor that reflects the uniformity of magnetic field.

关 键 词：波谱 半高宽 质量控制 均匀性 

分 类 号：R445.2[医药卫生—影像医学与核医学]