Progress Seminar 2015 7 24 1 2 WPR

Progress Seminar 2015. 7. 24 이준녕 1

연구 진행 상황 보고서 재활의학과 2주전 계획 § WPR 임상시험 진행 § ABT 논문 응급의학과 § ~ Bepatch/CPF § Efficient peak detection algorithm 공부 § § ECG R-peak detection optimization BCG J-peak detection § How to check errors? § Efficient peak detection algorithm 공부 § WPR 임상시험 진행 (6명) 연구 결과 § ABT 논문 § WPR automatic data § 2차년도 부품 조사 processing 개발 문제점 및 대책 목표 및 계획 2 § WPR 임상시험 진행 § ABT 논문 § ~

BEpatch/CPF • ECG R-peak detection algorithm: too intense for android use • Need to reduce complexity & to remove unnecessary components • Need to remove MATLAB-based scripts: for future transfer to Java or C++ 3

ECG R-peak detection ① Non-linear baseline removal ② Pan-Tompkins ③ Determine search range for the next R ④ Loop to find all potential peaks ⑤ Eliminate wrong peaks @fs=51. 2 Hz: processing time per peak 0. 5~6 msec @fs=1200 Hz: processing time per peak ~50 msec 4

Example 5

BCG J-peak detection ① Determine search range for BCG I-peak using R-peak ② Search for I-peak (more prominent in most cases as compared to J-peak) ③ Determine search range for BCG J-peak using I-peak ④ Search for J-peak 6

Example 7

WPR – 6 subject trial • Compared the of sensor placement on T 6 as versus T 10 • Found new evidence supporting two separate rotation patterns in healthy subjects • Automatic segmentation & ensemble averaging algorithm for WPR data 8

T 6 versus T 10 9

Rotation patterns 10