Institute of Measurement Science
Analysis of stress impacts on the examined person during scanning in an MRI scanner by the multi-channel PPG signal
Name of the supervisor
Dr. Ing. Jiří Přibil, (PhD.)
The Faculty of Electrical Engineering and Information Technology
Noise and vibration generated in MRI devices during the scanning process has negative physiological as well as psychological effects on an investigated person. Analysis of the stress effect is performed depending on the intensity and duration of the exposure. The stress factors including direct changes in blood pressure, shape of a heart pulse, and heart rate can be detected from continually sensed photoplethysmographic signal (PPG). For determination of systolic/diastolic arterial blood pressure values based on heart rate and pulse transit time parameters, it is necessary to use the multi-channel PPG signal sensed in real-time. Special construction of PPG sensors must be developed to enable proper function in the environment of strong radiofrequency disturbance together with stepwise changed magnetic field which is present in the scanning area of the running MRI device. The applicant is expected to have knowledge in areas of human physiology, methods of biomedical signal measurement and sensing, and numerical methods for signal processing.