1.ASP—015核磁共振仪前放性能的快速检测法由中美联合研制的 ASP—015核磁共振仪是世界上较先进的影像诊断设备,目前国内已有30余台投入使用,因其原理复杂,系统庞大,故检修困难。当信噪比降低,图象质量变差时,除外部原因(如磁体间、主机室的温湿度等), 1.ASP-015 rapid detection of NMR performance before put forward by the Sino-US joint development of the ASP-015 NMR is the world’s most advanced imaging diagnostic equipment, at present, more than 30 units have been put into use, because of its principle Complex, huge system, so maintenance is difficult. When the signal to noise ratio decreases, the image quality deteriorates, except for external reasons (such as the magnet, the host room temperature and humidity, etc.)