Quantitative assessment of myocardial acceleration in normal left ventricle with velocity vector imaging

Echocardiography
Haibin ZhangXiaodong Zhou

Abstract

Application of two-dimensional myocardial acceleration map derived from tissue Doppler imaging is limited by inherent angle dependency and substantial reader variability in the visualization of the origin of ventricular activation site. In this study we investigated the characteristics of myocardial acceleration in normal left ventricular (LV) walls with velocity vector imaging (VVI). VVI was applied to the parasternal short-axis two-dimensional echocardiographic images at basal, mid, and apical levels of the LV in 30 normal volunteers. Peak acceleration during early systole (ACC(s)) and time to ACC(s) (TACC(s)) were calculated for each segment of the standard 16-segment model. The time point of onset of active myocardial contraction corresponding to the QRS complex could not be determined in 409 (85.21%) of all 480 segments. No significant differences were found in TACC(s) among different LV levels and walls. In LV-free walls, there were no significant differences in ACC(s) among different LV levels and walls. The time point of onset of myocardial active contraction during early systole cannot be determined in most of normal myocardial segments. Also, there is homogeneity of the time to early systolic peak acceleration in the ...Continue Reading

References

Mar 18, 1999·Journal of the American College of Cardiology·L X YinZ X Zheng
Jul 10, 1999·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·H NagaiK Kobayashi
Nov 28, 2000·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·V EderP Cosnay
Aug 14, 2002·Echocardiography·Pio CasoGeorge R Sutherland
Oct 21, 2005·The International Journal of Cardiovascular Imaging·Yuksel CavusogluAhmet Unalir
Mar 28, 2006·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Bernd André JungJürgen Hennig
Jun 5, 2007·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Mark K FriedbergDavid N Rosenthal
Jun 15, 2007·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Mark K FriedbergDavid N Rosenthal

❮ Previous
Next ❯

Citations

May 3, 2013·Cardiology·Jan O MangualArash Kheradvar
Jan 22, 2011·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Felix StaehleMichael Markl
Apr 26, 2014·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Haibin ZhangMiaozhang Zhu
May 26, 2012·Fetal Diagnosis and Therapy·Ioannis Germanakis, Helena Gardiner
Jul 28, 2012·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Haibin ZhangYing Liu

❮ 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.