Improved quantification of left ventricular function by applying signal averaging to echocardiographic acoustic quantification

Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography
V Mor-AviR M Lang

Abstract

The acoustic quantification technique for on-line detection of endocardial boundaries currently provides continuous left ventricular area or volume signals and beat-to-beat ejection fraction. However, the distortion of individual waveforms by noise results in a wide beat-to-beat variability in these parameters. We developed an automated algorithm for the evaluation of left ventricular function by averaging acoustic quantification signals. End-diastolic and end-systolic area, stroke area, and fractional area change are measured directly from the average waveform. Peak ejection and peak filling rates and time to peak filling rate are obtained from its time derivative. Area signals obtained from eight normal subjects were used to evaluate the performance of this algorithm. Parameters of left ventricular function obtained with the automated algorithm were highly consistent and in excellent agreement with those obtained by repeated manual operator-dependent selections. This algorithm provides a fast and easy method for noise reduction in acoustic quantification signals, which significantly improves the noninvasive assessment of left ventricular function.

References

Sep 1, 1993·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·J GorcsanM R Pinsky
Mar 1, 1993·Anesthesiology·M K CahalanN B Schiller

❮ Previous
Next ❯

Citations

Jun 5, 2002·Medical & Biological Engineering & Computing·E G CaianiS Cerutti
Nov 13, 1998·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·K T SpencerR M Lang
Feb 15, 2001·Echocardiography·Victor Mor-AviRoberto M. Lang
Aug 27, 1998·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·V Mor-AviR M Lang
Jul 10, 1999·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·M L ChuangP S Douglas
Nov 13, 1998·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·K T SpencerC McKay
May 8, 2015·The International Journal of Cardiovascular Imaging·Diego MedvedofskyVictor Mor-Avi
Sep 7, 2002·Physiological Measurement·Enrico G CaianiGiuseppe Baselli
Jun 20, 2018·Acta Cardiologica·Oana MireaOctavian Istratoaie
Feb 15, 2001·Echocardiography·Christodoulos StefanadisPavlos Toutouzas

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.