万东i-open磁共振信噪比的测试

Test for SNR of Wandong i-open MRI Equipment

目的:通过对MRI设备信噪比的检测,及时发现设备存在的问题并加以解决。方法:利用两种测试方法(国家标准方法、包尚联教授的方法)分别测试万东i-open磁共振设备头线圈、颈线圈和体线圈的信噪比,比较不同线圈在两种测试方法下的信噪比并分析结果。结果:测试计算出的信噪比均低于标准值,证实了测试设备的信噪比偏低且不同线圈的信噪比存在差异。结论:所测试MRI设备的信噪比低于标准值,可能与磁屏蔽不良有关。

Object：Through the test for SNR of MRI equipment, discover the problem of equipments and take in to resolve in time. Methods： To test and analyze the SNR of head coil ,neck coil and body coil respectively of Waodong i-open MRI under two kinds of test methods （national standard method and professor Ban Shanglian＇s method）. Results： All the SNR were lower than the Standard value, proved the fact that the SNR of test equipment was lower and verify the differences among the SNR of different coils. Conclusion： The SNR of test MRI equipment below the standard value, maybe related to the magnetic shield problem.