29 Oct '14, 3pm

Microwave Stethoscope Lets Physicians Peer Into the Lungs

Microwave Stethoscope Lets Physicians Peer Into the Lungs

Photo: Hawaii Center for Advanced Communications/The University of Hawaii Heart-Failure Helper: A microwave transceiver [center] can do what other sensors can’t: measure the accumulation of water in a patient’s lungs. When a person’s heart is failing , water begins to build up in the lungs, making it increasingly difficult to breathe. The sensation, patients say, is like drowning. Deciding whether it’s safe for that patient to go home can depend on whether the water level goes back down. But today the options for measuring lung water are cumbersome, such as taking chest X-rays, inserting a tube into the lung, doing blood tests, or even weighing the patient over time to quantify the decrease. The most hands-off method requires measuring the impedance of electricity passing through the patient’s body with a bulky vest, but this method can fail if the patient shifts position....

Full article: http://spectrum.ieee.org/biomedical/diagnostics/microwave...

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