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INTERN DAILY
Swiss test wireless cameras to monitor newborns' vital signs
by Staff Writers
Geneva (AFP) April 10, 2017


Swiss researchers said Monday they have developed a wireless camera system to monitor vital signs in premature babies, a move that could replace uncomfortable and highly inaccurate skin sensors.

The skin sensors currently used to monitor vital signs in babies born prematurely generate false alarms in up to 90 percent of cases, mainly set off by the baby's movement.

"This is a source of discomfort for the babies, because we have to check on them every time," Jean-Claude Fauchere, a doctor at University Hospital Zurich's neonatal clinic, explained in a statement.

"It's also a significant stress factor for nurses and a poor use of their time -- it distracts them from managing real emergencies and can affect quality of care," he added.

His hospital is preparing to begin tests of a new, contactless system created by researchers at the EPFL polytechnical university in Lausanne and at the Swiss Center for Electronics and Microtechnology, CSEM, in Neuchatel, the two schools said in a statement.

Researchers elsewhere have also shown an interest in camera-based baby monitoring, including a British company, Oxehealth, which has run tests on newborns at a hospital in Oxford, England.

The system devised in Switzerland should allow premature babies kept warm in neonatal incubators to be medically monitored using highly sensitive cameras that detect the newborn's pulse by detecting and analysing its skin colour, which changes ever so slightly every time its heart beats.

"Breathing is monitored by measuring movements of its thorax and shoulders. At night, infrared cameras take over, which means that monitoring can be carried out non-stop," the statement said.

The optical system was designed by CSEM researchers, who chose cameras sensitive enough to detect minute changes in skin colour, while the EPFL researchers designed algorithms to process the data in real time, it said.

"We ran an initial study on a group of adults, where we looked at a defined patch of skin on their foreheads," EPFL doctoral student Sibylle Fallet said in the statement.

"With our algorithms we can track this area when the person moves, isolate the skin pixels and use minor changes in their colour to determine the pulse," she said, adding that "the tests showed that the cameras produced practically the same results as conventional sensors."

Once the system has been extensively tested on premature babies, it could one day replace skin sensors altogether, the schools said.

"In addition to cutting down on false alarms, it would also be more comfortable for the babies," the statement said.

INTERN DAILY
Mini X-ray sensor for high-precision medical applications
Paris, France (SPX) Apr 04, 2017
The ability to detect X-rays on a tiny scale paves the way for high-precision medical imaging and therapies. Such detection capabilities have been achieved by researchers from the CNRS, the University of Franche-Comte (UFC), and Aix-Marseille University (AMU), who attached an X-ray sensor to the end of an optical fiber. Their work was published in Optics Letters on March 28, 2017. X-ray ra ... read more

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