Related Experiment Video
Updated: Jul 10, 2026

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
Published on: April 11, 2025
A handheld device for simultaneous detection of electrical and mechanical cardio-vascular activities with
J Muehlsteff1, J Thijs, R Pinter
1Philips Research, PO Box 500145, 52085 Aachen, Germany. Jens.Muehlsteff@philips.com
Abstract:
This paper presents a handheld miniaturized sensor embodiment that allows simultaneous measurement of the electrical and related mechanical cardio-vascular activity. Mechanical motion is detected with a continuous wave Doppler radar sensor and interpreted with a synchronously detected ECG. The patient's posture and activity is measured using accelerometers. Challenges of the current technical approach are the positioning of the sensors, the influence of posture and the correct interpretation of the signals. The Doppler signals are compared with phonocardiography measurements, with a focus on the challenges of this technique. There is still research in an improved modeling of the sensor setup and signal interpretation required.
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