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GM制冷机在磁共振成像低温恒温器中的应用
引用本文:雷雯. GM制冷机在磁共振成像低温恒温器中的应用[J]. 低温工程, 1996, 0(1): 12-16
作者姓名:雷雯
作者单位:航天工业总公司兰州物理研究所
摘    要:旨在降低氦蒸发率的双级GM制冷机在磁共振成像低温恒温器中应用已有10多年的历史。本文介绍了美国APD低温公司应用GM制冷机冷却磁共振成像恒温器冷屏的经验。实践表明,应用这种制冷机,低温恒温器加注液氦的间隔期及维修期延长了,操作可靠性提高,使用成本降低了。

关 键 词:GM循环 制冷机 磁共振成像 低温恒温器

Application of Displex GM-Type Refrigenators on Magnetic Resonance Imaging Cryostats
Lei Wen. Application of Displex GM-Type Refrigenators on Magnetic Resonance Imaging Cryostats[J]. Cryogenics, 1996, 0(1): 12-16
Authors:Lei Wen
Abstract:GM-type refrigerators have been used for over 10 years on magnetic resonance imaging cryostats for the purpose of reducing the helium boiloff rate. This paper describesthe experience that APD Crogenics has applied Displex GM-type refrigerators for cooling the cold shieds on magnetic resonance imaging cryostats. The experience showed that using this kind of refrigerators, the interval of refilling the cryostat with liquid helium and the interval of maintenances have been extended, the operating reliability is improved and the lifetime cost is reduced.
Keywords:GM cycle  refrigerator  magnetic resonance imaging  cryostat
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