Your phone camera might have another useful feature beyond taking selfies. A study showed a smartphone was capable of detecting blood oxygen levels.
Engineers at the University of California San Diego and the University of Washington published a study that showed a smartphone was capable of detecting blood oxygen levels almost on par with the industry standard medical device.
People are also reading… "The biggest difference between a medical device, how it's made and how the smartphone-based health monitor works, is that we don't have a perfect system and we have to use machine learning and a lot of data to sort of help us get to somewhere close to what would have been the perfect physical system, which is the medical device," said Wang, who also is a faculty member of the university's Design Lab.
"The camera records how much that blood absorbs the light from the flash in each of the three color channels it measures: red, green and blue," Wang said. The smartphone used in the study was able to detect a blood oxygen level as low as 70 percent, which is the lowest value that pulse oximeters should be able to measure according to the U.S. Food and Drug Administration.
The team of researchers noted that it will be a while before this smartphone technique can be widely used in households or clinics via a smartphone app. However, part of what they are doing is showing how these kinds of tools can be made more accessible, Wang said.
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