A wearable bluetooth LE sensor for patient monitoring during MRI scans

Vogt, Christian, Reber, Jonas, Waltisberg, Daniel, Büthe, Lars, Marjanovic, Josip, Münzenrieder, Niko, Pruessmann, Klaas P and Tröster, Gerhard (2016) A wearable bluetooth LE sensor for patient monitoring during MRI scans. In: IEEE 38th Annual International Conference of the Engineering in Medicine and Biology Society (EMBC), 2016, August 16-20th 2016, Orlando, Florida, USA.

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This paper presents a working prototype of a wearable patient monitoring device capable of recording the heart rate, blood oxygen saturation, surface temperature and humidity during an magnetic resonance imaging (MRI) experiment. The measured values are transmitted via Bluetooth low energy (LE) and displayed in real time on a smartphone on the outside of the MRI room. During 7 MRI image acquisitions of at least 1 min and a total duration of 25 min no Bluetooth data packets were lost. The raw measurements of the light intensity for the photoplethysmogram based heart rate measurement shows an increased noise floor by 50 LSB (least significant bit) during the MRI operation, whereas the temperature and humidity readings are unaffected. The device itself creates a magnetic resonance (MR) signal loss with a radius of 14 mm around the device surface and shows no significant increase in image noise of an acquired MRI image due to its radio frequency activity. This enables continuous and unobtrusive patient monitoring during MRI scans.

Item Type: Conference or Workshop Item (Paper)
Additional Information: ISBN: 9781457702204
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Sensor Technology Research Centre
Depositing User: Niko Munzenrieder
Date Deposited: 25 Oct 2016 13:53
Last Modified: 25 Oct 2016 13:53
URI: http://sro.sussex.ac.uk/id/eprint/65029

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