NASA Center: Johnson Space Center
Public Release Year: 1996
Reference Number: JSC-SO-162
Category: Health And Medicine
Origin: Project Mercury Astronaut Monitoring, Nas1-4500
Under contract to Johnson Space Center, the University of Minnesota developed the concept of impedance cardiography as an alternative to thermodilution to access astronaut heart function in flight. NASA then contracted Space Labs, Inc. to construct miniature space units based on this technology. Several companies then launched their own impedance cardiography, including Renaissance Technologies, which manufactures the IQ System. The IQ System is 5 to 17 times cheaper than thermodilution, and features the signal processing technology called TFD (Time Frequency Distribution). TFD provides three-dimensional distribution of the blood circulation force signals, allowing visualization of changes in power, frequency and time.
Page Number in Published book: 51
Manufacturer: RENAISSANCE TECHNOLOGIES