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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Concepts Magn Reson Part B Magn Reson Eng. 2011 Apr;39B(2):78–88. doi: 10.1002/cmr.b.20192

Figure 3.

Figure 3

Apparatus for transferring the exhaled mixture contained in the recapture balloon to a pressurized cylinder. a) After the balloon is connected to the recapture system, the piston is moved up, withdrawing the content of the balloon through a check valve into the chamber of the piston. When the piston is pushed in, another check valve forces the contents of the piston to flow toward the cylinder where the recaptured gas is stored. The gas also contains air and carbon dioxide. b) Mechanical model where the casing is transparent to show the main components, and c) the device in use at our lab