title: An accurate heart beat detection method in the EKG recorded in fMRI system.
abstract: 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.
authors.affiliation: Division of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea. owlppami@athena.kaist.ac.kr
authors.forename: Sung Suk
authors.initials: SS
authors.lastname: Oh
authors.forename: Jun-Young
authors.initials: JY
authors.lastname: Chung
authors.forename: Hyo Woon
authors.initials: HW
authors.lastname: Yoon
authors.forename: HyunWook
authors.initials: H
authors.lastname: Park
mesh_terms: 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*