基于FSE序列的MRI设备性能测试的探讨

Discussion on Performance Test of MRI Equipment Based on FSE Sequence

本文对国家新制定的《医用磁共振系统校准规范(征求意见稿)》进行验证;分析并探讨快速自旋回波序列(FSE)代替自旋回波序列(SE),对磁共振设备性能测试的可行性;依据征求意见稿的测试条件与计算方法,对该设备进行性能测试,并分别采用自旋回波序列(SE)和快速自旋回波序列(FSE)扫描SMR-170模体,对成像参数进行对比分析。实验证明:在征求意见稿指定的性能测试参数条件下,SE序列对设备的性能测试具有可行性。

In this paper,the newly formulated"Medical Magnetic Resonance System Calibration Standard(draft for comment)"is verified;The feasibility of using fast spin echo sequence(FSE)instead of spin echo sequence(SE)to test the performance of magnetic resonance equipment is analyzed and discussed.According to the test conditions and calculation methods of the draft,the performance of the device was tested,and the spin echo sequence(SE)and fast spin echo sequence(FSE)were used to scan the SMR-170 module,and the imaging parameters were compared and analyzed.Experiments show that the SE sequence is feasible for the performance test of the equipment under the conditions of the performance test parameters specified in the draft.