Astronaut <a href="https://en.wikipedia.org/wiki/Kevin_A._Ford" class="extiw" title="en:Kevin A. Ford">Kevin Ford</a> (right) trains with the Ultrasound 2 for the Integrated Cardiovascular experiment. Sonographer David Martin (left) guides the crewmember in obtaining the desired images for the experiment while Ariel Rodriguez (center) serves as the subject.
NASA
<a rel="nofollow" class="external free" href="http://www.nasa.gov/mission_pages/station/research/experiments/Ultrasound_24.jpg">http://www.nasa.gov/mission_pages/station/research/experiments/Ultrasound_24.jpg</a>