An accurate heart beat detection method in the EKG recorded in fMRI system.
The simultaneous recording of functional magnetic resonance imaging (fMRI) and electroencephalogram (EEG) provides an efficient signal for the high spatiotemporal brain mapping because each modality provides complementary information. The peak detection in the EEG signal measured in the MR scanner is necessary for removal of the ballistocardiac artifact. Especially, it would be affected by the quality of the EKG signal and the variation of the heart beat rate. Therefore, we propose the peak detection method using a K-teager energy operator (K-TEO) as well as further refinement processes in order to detect precise peaks. We applied this technique to the analysis of simulation waves with random noise and abrupt heat beat changes.
Oh
Sung Suk
SS
Division of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea. owlppami@athena.kaist.ac.kr
Chung
Jun-Young
JY
Yoon
Hyo Woon
HW
Park
HyunWook
H
D000465:Algorithms; D001931:Brain Mapping / Q000379:methods; D004562:Electrocardiography / Q000379:methods*; D004569:Electroencephalography / Q000379:methods; D001330:Electronic Data Processing / Q000379:methods*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*