Laser light puts health diagnoses a breath away
搁别补诲听original Media Release published in the Newsroom.
Researchers at the 成人大片 have brought medical diagnoses via breath analysis a step closer with proof-of-concept testing of the technology.
The University鈥檚 Institute for Photonics and Advanced Sensing (IPAS) is developing a Human Breath Analysis Instrument using Frequency Comb Spectroscopy, a highly accurate laser-based measurement tool that produces many different colours of light.
Lead researchers Dr Sarah Scholten and Dr Chris Perrella believe the research represents a pivotal moment in health innovation as it holds the potential to revolutionise the simplicity, speed, and efficiency of health assessments.
鈥淏reath analysis detects gas-analytes such as exhaled volatile organic compounds (VOCs) and inorganic gases that are important biomarkers for various disease-types,鈥 Dr Scholten says.
鈥淏y looking at the colour of light and the amount of gas absorption, we can identify which and in what concentration gas molecules are present.
鈥淎pplying this highly accurate technique to breath analysis creates a tool that can pinpoint molecular health markers in human breath faster and more precisely.
鈥淎lso, it can quickly detect even tiny traces of molecules, and differentiate between similar molecules.鈥
While the concept is not new, Dr Perrella says the results of testing with a new prototype developed at IPAS are exciting and promising.
The team conducted tests with baker鈥檚 yeast, a simple analogue for human breath.
鈥淎s with humans, baker鈥檚 yeast produces carbon dioxide as a major component of its 鈥榖reath鈥, and the composition of the yeast鈥檚 emission changes depending on its diet and environment,鈥 Dr Perrella says.
鈥淲e showed the prototype could differentiate isotopes of carbon dioxide 鈥 which could be used as markers of health 鈥 and were able to monitor carbon dioxide production in real-time as the yeast 鈥榖reathed.鈥
Applying this highly accurate technique to breath analysis creates a tool that can pinpoint molecular health markers in human breath faster and more precisely. Dr Sarah Scholten, 成人大片
鈥淲hat we have proven is that our spectrometer was able to observe the changing metabolism of a living organism by monitoring the concentration of CO2 it produces.
鈥淎nd, by varying the temperature, type and amounts of sugar and the quantity of yeast we were able to observe the anticipated changes in our readings.
鈥淭his proof-of-concept project has also been invaluable in helping us to define what adjustments may need to be made to the spectrometer to increase its capacity to detect much smaller concentrations of biomarkers found in human breath.鈥
Dr Chris Perrella, Dr Sarah Scholten and Professor Andre Luiten are Investigators in the newly commenced Australian Research Council (ARC) Centre of Excellence in Optical Microcombs for Breakthrough Science (COMBS).
"" is published in Biomedical Optics Express