Input output

摘要

Crew members on the International Space Station are docked some 250 miles from the nearest hospital, and that's straight down. Now that the government is talking about sending people to Mars, the distance gets real: 35 million miles and counting. So what do you do if somebody gets . sick or hurt out there? A doctor on board can take care of emergencies. But where do you turn for a specialist? NASA's engineers and flight surgeons have come up with an idea that enables a piece of research equipment to do double duty. The International Space Station is equipped with an ultrasound machine as part of a suite of equipment used for life science research. This is the kind of machine that gives you a snapshot of your baby before the child is born. If it can make sure the kids are all right, then it should work on astronauts. The idea has spawned new medical techniques.