New Breathalyzer Can Detect Lung Cancer

Israeli scientists have invented a breathalyzer-type device that can detect chemical markers for lung cancer in a patient’s breaths.
The sensor relies on a film of gold nanoparticles, which conducts electricity, layered over a carbon-based substrate. When a patient breathes into the device, particulates in the breath accumulate on the carbon layer and the sensor swells pushing the gold nanoparticles further apart, which, in turn, alters the resistance of the film. Each type of particulate has a unique effect on the resistance which can be measured by having a current flow through the sensor. “The user gets a figure on the device’s display panel that indicates whether the person is healthy or has cancer” [Physics World], says lead researcher Hossam Haick.

The new device can detect smaller amounts of the target chemicals and therefore diagnose lung cancer earlier, when treatments can be more successful. Link

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If this thing would be cheap enough to be automatically included in every doctor's checkup, that would be awesome. Having worked in an oncology department specifically about the subject of lung cancer, the problem is that it is usually detected too late. The reason it is detected too late is that by the time symtoms arise, the disease has evolved quite a lot. This little gadget could save lives.
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