Astronauts use Ultrasound, too

"When you hear the word 'ultrasound' you probably think of pregnant moms and their babies. Add one more to that list: astronauts. "

Nobody's pregnant in space, but astronauts onboard the International Space Station (ISS) are using ultrasound, looking inside themselves as part of a NASA project called ADUM, short for "ADvanced Ultrasound in Microgravity."

Here on Earth, doctors can look at broken bones with an x-ray machine, they can look for tumors with a CAT scanner, and they can examine your brain with an MRI. None of those bulky instruments is available on any NASA spacecraft.