CNN - When doctors in a remote African town warned a 20-something pregnant woman she was well past her due date, the Liberian patient agreed to have labor induced. But Dr. Simon Kotlyar wanted to confirm the diagnosis first. So the visiting doctor performed an ultrasound test using a new system -- a machine miniaturized to the size of a laptop computer -- and discovered the Monrovia woman was only 32 weeks pregnant, not 40 weeks as anecdotal evidence had led doctors to believe. "Having that system made a pretty big difference," said Kotlyar, chief resident in the department of emergency medicine at Yale-New Haven Hospital in Connecticut. "I told her to go home and come back in a few weeks."