They have envisioned, for example, paramedics using a helmetlike MRI scanner to pinpoint blood clots in the brain of a stroke victim while still inside a speeding ambulance.

• 比方说，如果有头盔般大小的脑部MRI仪器，救护车上的医务人员便可以先行侦测中风患者脑内血块栓塞的确切位置；