Department of Radiology, 900th Hospital of Joint Logistics Support Force (Formerly Fuzhou General Hospital of Nanjing Military Region), Fuzhou Fujian 350025, China
Abstract：This paper is going to research the influencing factors in the process of low contrast resolution detection of MRI system. We took them as variables, scaned ACR phantom with spin echo sequence, and measured the low contrast resolution at the detection slices. By analyzing the formation process and principle of various factors, and comparing the experimental results after processing the image data, it can be found that the accuracy of layer positioning affects the display of low contrast resolution module, resulting in the decrease of detection value, and the existence of artifacts and the change of scanning parameters will also bring different degrees of error to the results. There are many factors that can change the results, when testing, the staff need to find the right medicine according to the causes of the problem, calibrate the accuracy of the spatial position and the parameter selection of the imaging process to ensure the authenticity and effectiveness of the detection results. While the result deviation is large, we should pay special attention to eliminate the influence. We can provide theoretical basis for the establishment of the reference curve and drift degree standard of periodic image quality control detection according to the special detection standard and error range of planning special MRI system, so as to ensure the effectiveness of the system time performance curve and help maintain the stable operation of the equipment.
熊晖，付丽媛，钟群，肖慧，许尚文，陈自谦. 磁共振成像设备低对比度分辨力影响因素的分析研究[J]. 中国医疗设备, 2020, 35(11): 16-18.
XIONG Hui ,FU Liyuan, ZHONG Qun, XIAO Hui, XU Shangwen，CHENZiqian. Analysis and Research on the Factors influencing the Low Contrast Resolution of MRI Equipment. China Medical Devices, 2020, 35(11): 16-18.
