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Microwave Glucose Sensor for Bloodless Diabetes Monitoring

February 27th, 2008 Medgadget Editors Medicine, Pediatrics

Dr. Randall Jean and his engineering colleagues at Baylor College came up with a noninvasive way to measure blood glucose through the use of non-invasive microwave technology. The idea is that microwaves could be used in determining a substance’s dielectric constant:

For diabetics, the daily routine of pricking their finger to check blood-sugar levels can be an annoying and inconvenient task. But now, a Baylor University researcher has developed an electromagnetic sensor that could provide diabetics a noninvasive alternative to reading their blood glucose levels, and new research shows the sensor works and is effective.
“We are definitely excited,” said Dr. Randall Jean, associate professor of electrical and computer engineering at Baylor. “This is a relatively new area the market is exploring and we’ve demonstrated that using microwave energy can work.”
The sensor uses electromagnetic waves to measure blood glucose levels in the body. As the energy goes from the sensor through the skin and back to the sensor, the glucose level is measured through the transference of energy. Jean said the microwave frequency range is wide enough to isolate the effect of sugar in the blood and minimize the characteristics of other things like body fat and bone, which could alter accurate readings. Jean also said using electromagnetic waves is relatively safe because they do not ionize the body’s molecules like x-rays can do.
To measure glucose levels, users must press their thumb against the sensor, and a new study by the Baylor researchers shows that the sensor is accurate. Researchers took samples of nearly 20 people and compared those samples to levels measured by an over-the-counter commercial sensor. The researchers found Baylor’s noninvasive sensor has the potential of achieving the same or even better accuracy than current commercial sensors, many of which prick the finger to sample blood.

Baylor press release: Baylor Researcher Creates New Way to Test Blood-Sugar Level…
MIT Tech Review: Bloodless Diabetes Monitoring…
Microwave Applied Metrology Lab at Baylor…

Medgadget Editors

Medical technologies transform the world! Join us and see the progress in real time. At Medgadget, we report the latest technology news, interview leaders in the field, and file dispatches from medical events around the world since 2004.

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