The measurement of opening angle and orifice area of a bileaflet mechanical valve using multidetector computed tomography.

Korean Circulation Journal
Dong-Hyeon LeeJae-Hyung Kim

Abstract

The aim of this study was to assess mechanical valve function using 64-slice multidetector computed tomography (MDCT). In 20 patients (mean age, 50+/-12 years; male-to-female ratio, 10:10), 30 St. Jude bileaflet mechanical valves (15 aortic and 15 mitral valves) were evaluated using MDCT. We selected images vertical and parallel to the mechanical valve. The valve orifice area (OA) and valve length were determined by manual tracing and the opening and closing angles were measured using a protractor. The OA and length of the mechanical valves were compared with the manufacturer's values. The geometric orifice areas (GOAs) based on the manufacturer's values and the OAs determined by MDCT were 3.4+/-0.2 cm(2) and 3.4+/-0.3 cm(2) for the mitral valves and 2.1+/-0.3 cm(2) and 2.1+/-0.4 cm(2) for the aortic valves, respectively. The correlation coefficients between the OA measures were 0.433 for the mitral valves and 0.874 for the aortic valves (both p<0.001). The lengths based on the manufacturer's values and determined by MDCT were 29.3+/-1.99 mm and 29.6+/-1.65 mm for the mitral valves and 21.5+/-2.1 mm and 20.7+/-2.3 mm for the aortic valves, respectively. The correlation coefficients between the measures were 0.651 for the mitral...Continue Reading

References

Apr 20, 2001·AJR. American Journal of Roentgenology·C R BeckerM F Reiser
Sep 18, 2001·Lancet·K NiemanP J de Feyter
Feb 12, 2002·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Miguel A QuiñonesUNKNOWN Doppler Quantification Task Force of the Nomenclature and Standards Committee of the American Society of Echocardiography
Feb 28, 2002·European Radiology·Jürgen K WillmannBorut Marincek
Feb 20, 2003·Circulation·Richard L MorinCynthia H McCollough
Apr 23, 2003·Journal of the American College of Cardiology·David SchwartzmanWilliam G Wigginton
Nov 24, 2004·Clinical Radiology·P Dawson
Feb 22, 2005·The American Journal of Cardiology·Joanne D SchuijfAlbert de Roos
Jul 28, 2005·Circulation·Matthew J BudoffUNKNOWN Society of Cardiovascular Computed Tomography
Dec 20, 2005·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Ricardo C CuryVivek Y Reddy
Oct 13, 2006·European Heart Journal·Johannes RixeKatharina Anders
Dec 23, 2006·The Annals of Thoracic Surgery·Catherine M JonesAra Darzi
Jan 24, 2007·AJR. American Journal of Roentgenology·Georg MühlenbruchRalf Koos

❮ Previous
Next ❯

Citations

Nov 22, 2014·AJR. American Journal of Roentgenology·Eduard GhersinDiana E Litmanovich
Nov 10, 2012·The International Journal of Cardiovascular Imaging·Sung Min KoHweung Kon Hwang
Feb 21, 2018·Clinical Research in Cardiology : Official Journal of the German Cardiac Society·Hyun Jung KooDong Hyun Yang
Sep 12, 2015·Circulation. Cardiovascular Imaging·Dominika SucháRicardo P J Budde
Sep 12, 2015·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Young Joo SuhByoung Wook Choi

❮ Previous
Next ❯

Methods Mentioned

BETA
coronary artery bypass

Software Mentioned

Pro Plus analyzer
Image
Advantage Windows Workstation
Statistical Package for Social Science ( SPSS )
Card IQ

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.