A few years ago, magnetic resonance imaging was healthcare's version of a foreign sports car-flashy, expensive and impractical. Now, after years in the doldrums, sales of MRI systems are roaring back. An aging fleet of MRI scanners due for replacement and a hearty increase in doctors' use of the versatile imaging tools are combining to fuel the surge in demand, vendors and customers say.
几年前，磁共振成像在医疗领域就像是一辆外国跑车——华而不实、价格昂贵且不实用。如今，在经历多年低迷之后，磁共振成像（MRI）系统的销量正强势反弹。供应商和客户表示，一批即将到期需要更换的老化MRI扫描仪，以及医生对这种多功能成像工具使用量的大幅增加，共同推动了需求的激增。
