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最近,由美国旧金山的加利福尼亚大学放射成像实验室开发了一种开放式磁共振成像系统(MRI)。这一系统是由立柱支撑的两块扁平的磁板组成,其扫描器的所有周边均为开放式。扫描时,患者躺在两磁板之间。该装置重最约为11000磅,其大小约同于CT扫描装置。据该实验室主任Leoh Kahfman博士透露,这种MT/P(磁断层照像术/永久性)是一种超低磁场的永久性磁铁系统,它采用“匹配带宽”技术以达到获取大量的MR信号,减少噪声和增强图象的对比度。其磁场强度为0.66T。虽然这种系统的成像质量不能与超导系统相比
Recently, an open magnetic resonance imaging system (MRI) was developed by the Radiographic Laboratory at the University of California, San Francisco in the United States. The system consists of two flat magnetic plates supported by columns with all the periphery of the scanner open. When scanning, the patient lies between the two magnetic plates. The unit weighs about 11,000 pounds, about the same size as a CT scanner. According to Dr. Leoh Kahfman, director of the laboratory, this MT / P (Magnetic Tomography / Permanence) permanent magnet system with ultra-low magnetic field uses “matched bandwidth” technology to achieve a large number of MR Signal, reduce noise and enhance the image contrast. The magnetic field strength of 0.66T. Although the imaging quality of this system can not be compared with the superconducting system