본문 바로가기
KERD
논문KCI 등재

Real-Time Estimation ofthe Ventricular Relaxation Time Constant

Real-Time Estimation of the Ventricular Relaxation Time Constant

김희찬|손대원|전홍구
대한의용생체공학회 (The Korea Society Of Medical & Biological Engineering)|2005.04|의공학회지 (Journal of biomedical Engineering Research)|제26권 제2호|pp. 87-93

1

조회

0

다운로드

0

인용

0

참고문헌

초록

Abstract

A new method for real-time estimating left ventricular relaxation time constant () from the left ventricular (LV) pressure waveform, based on the isovolumic relaxation model, is proposed. The presented method uses a recursive least squares (RLS) algorithm to accomplish real-time estimation. A new criterion to detect the end-point of the isovolumic relaxation period (IRP) for the estimation of is also introduced, which is based on the pattern analysis of mean square errors between the original and reconstructed pressure waveforms. We have verified the performance of the new method in over 4,600 beats obtained from 70 patients. The results demonstrate that the proposed method provides more stable and reliable estimation of than the conventional off-line methods.

참고문헌 (13)

  1. "Congestive heart failure with normal systolic function", 54, pp.778~782 (1984)
  2. "Heart failure with normal systolic function-update of prevalence", prog 148(sis and therapy), pp.2109~2111 (1988)
  3. "Assessment of Mitral Annulus Velocity by Doppler Tissue Imaging in the Evaluation of Left Ventricular Diastolic Function", 30, pp.474~480 (1997)
  4. "Diastolic Function of the Nonfilling Human Left Ventricle", 20, pp.1524~1532 (1992)
  5. "Hemodynamic determinants of the time-course of fall in canine left ventricular pressure", 58, pp.751~760 (1976)
  6. "Assessment of diastolic function", 69, pp.836~841 (1984)
  7. "Determinants of Left Ventricular Filling and of the Diastolic Pressure-Volume Relation", 64(5), pp.827~852 (1989)
  8. "Evidence of load-dependent relaxation in the intact dog heart", 48, pp.813~824 (1981)
  9. "Estimation of time constant of left ventricular relaxation", 49, pp.1426~1434 (1985)
  10. "Comparison of the effects of nitroprusside and nifedipine on diastolic properties in patients with hypertrophic cardiomyopathy Altered left ventricular loading or improved muscle inactivation", 2, pp.879~886 (1983)
  11. "Logistic time constant of isovolumic relaxation pressure-time curve in the canine left ventricle", 92, pp.2318~2326 (1995)
  12. "A graphic orientated data analysis system for hemodynamic research", 59, pp.197~214 (1999)
  13. "Adaptive filter theory, 3rd edition", pp.562~587 (1996), Prentice-Hall

이 간행물의 다른 논문 (7건)

Design and Implementation of HL7-based Real-time Data Communication for Mobile Clinical Information System유수영, 최진욱, 전종훈, 박희경pp. 65-71Topology Correction for Flattening of Brain Cortex권민정, 박현욱pp. 73-86EEG Current Source Imaging using VEP Data Recorded inside a 3.0T MRI Magnet임창완, 최영환, 김태성, 이수열, 한재용pp. 95-99Osteogenic Potential of the Periosteum and Periosteal Augmentation for Bone-tunnel Healing윤인찬, J-K Francis Suh, 최귀원pp. 101-110Effects of Stimulation Conditions and Waveforms on Muscle Contractile Characteristics송동진, 강곤pp. 111-116
원문 보기