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3d echocardiography

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https://www.readbyqxmd.com/read/28319168/targeting-chronic-cardiac-remodeling-with-cardiac-progenitor-cells-in-a-murine-model-of-ischemia-reperfusion-injury
#1
Janine C Deddens, Dries A Feyen, Peter-Paul Zwetsloot, Maike A Brans, Sailay Siddiqi, Linda W van Laake, Pieter A Doevendans, Joost P Sluijter
BACKGROUND: Translational failure for cardiovascular disease is a substantial problem involving both high research costs and an ongoing lack of novel treatment modalities. Despite the progress already made, cell therapy for chronic heart failure in the clinical setting is still hampered by poor translation. We used a murine model of chronic ischemia/reperfusion injury to examine the effect of minimally invasive application of cardiac progenitor cells (CPC) in cardiac remodeling and to improve clinical translation...
2017: PloS One
https://www.readbyqxmd.com/read/28302656/3d-transoesophageal-echocardiography-in-the-tavi-sizing-arena-should-we-do-it-and-how-do-we-do-it
#2
REVIEW
Caroline Bleakley, Mehdi Eskandari, Mark Monaghan
Transcatheter aortic valve implantation (TAVI) was initially proven as an alternative to valve replacement therapy in those beyond established risk thresholds for conventional surgery. With time the technique has been methodically refined and offered to a progressively lower risk cohort, and with this evolution has come that of the significant imaging requirements of valve implantation. This review discusses the role of transoesophageal echocardiography (TOE) in the current TAVI arena, aligning it with that of cardiac computed tomography, and outlining how TOE can be used most effectively both prior to and during TAVI in order to optimise outcomes...
March 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28301685/conventional-versus-3d-echocardiography-to-predict-arrhythmia-recurrence-after-atrial-fibrillation-ablation
#3
Matthias Bossard, Sven Knecht, Stefanie Aeschbacher, Ronny R Buechel, Thomas Hochgruber, Andreas J Zimmermann, Arnheid Kessel-Schaefer, Frank-Peter Stephan, Gian Völlmin, Maurice Pradella, Christian Sticherling, Stefan Osswald, Beat A Kaufmann, David Conen, Michael Kühne
BACKGROUND: Arrhythmia recurrence after atrial fibrillation (AF) ablation remains high and requires repeat interventions in a substantial number of patients. We assessed the value of conventional and 3D-echocardiography to predict AF recurrence. METHODS AND RESULTS: Consecutive patients undergoing AF ablation by means of pulmonary vein isolation were included in a prospective registry. Echocardiograms were obtained prior to the ablation procedure, and analyzed offline in a standardized manner, including 3D-left atrial (LA) volumetry and determination of LA function and sphericity...
March 16, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28299606/three-dimensional-speckle-tracking-longitudinal-strain-is-related-to-myocardial-fibrosis-determined-by-late-gadolinium-enhancement
#4
Marco Spartera, Anna Damascelli, Ferenc Mozes, Francesco De Cobelli, Giovanni La Canna
Three-dimensional (3D) speckle tracking echocardiography (STE) is a reliable clinical tool for accurate measurements of left ventricular (LV) volumes and ejection fraction (EF). In this prospective study, we sought to identify an association between 3DSTE longitudinal strain abnormalities and areas of late gadolinium enhancement (LGE). In 50 patients (52 ± 18.5 years old) referred to our hospital for clinically indicated CMR, 3D full-volume trans-thoracic acquisitions on apical views were performed within 1 h of CMR, in order to obtain LV volumes and ejection fraction as well as global and segmental peak systolic longitudinal strain...
March 15, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28292302/impact-of-left-ventricular-outflow-tract-ellipticity-on-the-grading-of-aortic-stenosis-in-patients-with-normal-ejection-fraction
#5
Frédéric Maes, Sophie Pierard, Christophe de Meester, Jamila Boulif, Mihaela Amzulescu, David Vancraeynest, Anne-Catherine Pouleur, Agnès Pasquet, Bernhard Gerber, Jean-Louis Vanoverschelde
BACKGROUND: The pathophysiology of paradoxical low-gradient (LG) severe aortic stenosis (SAS) remains controversial. As low transvalvular flow has been implicated, we sought to investigate the impact of left ventricular outflow tract (LVOT) ellipticity on the estimation of the LV stroke volume, the calculation of the aortic valve area (AVA) by use of the continuity equation and on AS severity grading. METHODS: We studied 190 consecutive patients (mean age: 72 ± 13 years; male: 57%) with SAS (indexed AVA < 0...
March 15, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28285328/left-ventricular-mechanics-in-isolated-mild-mitral-stenosis-a-three-dimensional-speckle-tracking-study
#6
Esra Poyraz, Tuğba Kemaloğlu Öz, Gönül Zeren, Tolga Sinan Güvenç, Cevdet Dönmez, Fatma Can, Rengin Çetin Güvenç, Şennur Ünal Dayı
In a fraction of patients with mild mitral stenosis, left ventricular systolic function deteriorates despite the lack of hemodynamic load imposed by the dysfunctioning valve. Neither the predisposing factors nor the earlier changes in left ventricular contractility were understood adequately. In the present study we aimed to evaluate left ventricular mechanics using three-dimensional (3D) speckle tracking echocardiography. A total of 31 patients with mild rheumatic mitral stenosis and 27 healthy controls were enrolled to the study...
March 11, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28275939/current-management-of-patients-with-severe-aortic-regurgitation
#7
REVIEW
Charles Nadeau-Routhier, Ons Marsit, Jonathan Beaudoin
Chronic aortic regurgitation can result from various congenital and acquired anomalies and can be associated with proximal aortic disease. As the number of aortic valve procedures is growing, the incidence of post-procedural regurgitation also increases with associated morbidity. Typical evolution is characterized by a clinically silent phase of variable duration followed by a rather rapid decline with high incidence of adverse events. A challenge remains to find the optimal timing for an intervention: Patients are exposed to unnecessary surgical risks if treated prematurely, but peri- and post-operative prognosis is worse when the intervention is performed too late...
February 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28274714/quantification-of-multiple-mitral-regurgitant-jets-an-in%C3%A2-vitro-validation-study-comparing-two-and-three-dimensional-proximal-isovelocity-surface-area-methods
#8
Fabian Zürcher, Nicolas Brugger, Silje Ekroll Jahren, Stefano Fausto de Marchi, Christian Seiler
BACKGROUND: The accuracy of the proximal isovelocity surface area (PISA) method for the quantification of mitral regurgitation (MR), in the case of multiple jets, is unknown. The aim of this study was to evaluate different two-dimensional (2D) and three-dimensional (3D) PISA methods using 3D color Doppler data sets. METHODS: Several regurgitant volumes (Rvols) were simulated using a pulsatile pump connected to a phantom equipped with single and double regurgitant orifices of different sizes and interspaces...
March 5, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28269820/three-dimensional-echocardiographic-measurements-using-automated-quantification-software-for-big-data-processing
#9
Cheng Feng, Lixin Chen, Jian Li, Jiangtao Wang, Fajin Dong, Jinfeng Xu
OBJECTIVE: To compare a full-automated software to quantify 3D transthoracic echocardiography namely, 3DE-HM (three-dimensional echocardiography HeartModel, Philips Healthcare) with the traditional manual quantitative method (3DE-manual) for assessing volumes of left atrial and ventricular volumes, and left ventricular ejection fraction (LVEF). METHODS: 3D full volume images acquired from 156 subjects were collected and divided into 3 groups, which include 70 normal control cases (Group A), 17 patients with left ventricular remodeling after acute myocardial infarction (AMI) (Group B), and 69 patients with left atrial remodeling secondary to hypertension (Group C)...
March 3, 2017: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/28268515/patient-movement-compensation-for-3d-echocardiography-fusion
#10
Abhilash R Hareendranathan, Michelle Hanbidge, Allen He, Michelle Noga, Pierre Boulanger, Harald Becher, Kumaradevan Punithakumar
Limited field of view (FOV) is a major problem for 3D real-time echocardiography (3DRTE), which results in an incomplete representation of cardiac anatomy. Various image registration techniques have been proposed to improve the field of view in 3DRTE by fusing multiple image volumes. However, these techniques require significant overlap between the individual volumes and rely on high image resolution and high signal-to-noise ratio. Changes in the heart position due to patient movement during image acquisition can also reduce the quality of image fusion...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268514/mitral-valve-annulus-localization-in-3d-echocardiography
#11
Abhishek Tiwari, Kedar A Patwardhan
The Mitral Valve is a structure on the left side of the human heart that regulates the flow of oxygenated blood into the Left Ventricle and also helps maintain the pressure within the Left Ventricle when the blood gets pumped to the rest of the body from the Left Ventricle. Pathology of the Mitral Valve often manifests through structural changes in the anatomy. Assessment of Mitral Valve pathology as well as determination of specific interventions require quantification of various structures of the Mitral Valve and one of these structures of interest is the Mitral Valve annulus...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28266731/left-ventricular-myocardial-function-assessed-by-three-dimensional-speckle-tracking-echocardiography-in-takotsubo-cardiomyopathy
#12
Yukari Kobayashi, Hiroyuki Okura, Yuhei Kobayashi, Shuichiro Fukuda, Atsushi Hirohata, Kiyoshi Yoshida
BACKGROUND: We aimed to investigate left ventricular (LV) functional recovery in Takotsubo cardiomyopathy (TC) using three-dimensional (3D) speckle tracking echocardiography. METHODS: Twenty-one patients with TC who underwent routine and 3D echocardiography as well as electrocardiography were enrolled. 3D images were analyzed to measure 3D radial strain and area tracking (area change of each LV segment). Postsystolic shortening (PSS) or thickening (PST) was defined as a further shortening or thickening occurred after the end-systole...
March 7, 2017: Echocardiography
https://www.readbyqxmd.com/read/28266730/echocardiographic-assessment-in-patients-with-chronic-kidney-disease-current-update
#13
REVIEW
Samir Sulemane, Vasileios F Panoulas, Petros Nihoyannopoulos
Patients with chronic kidney disease (CKD) carry a high cardiovascular risk. An abundance of evidence has emerged in recent years establishing minor reductions in estimated glomerular filtration rate as an independent risk factor for cardiovascular mortality. Additionally, cardiac changes, such as left ventricular hypertrophy and impaired left ventricular systolic function, have been associated with an unfavorable prognosis. Despite the significant prevalence of underlying cardiac abnormalities, symptoms may not manifest in many patients with CKD...
March 7, 2017: Echocardiography
https://www.readbyqxmd.com/read/28261103/novel-computational-analysis-of-left-atrial-anatomy-improves-prediction-of-atrial-fibrillation-recurrence-after-ablation
#14
Marta Varela, Felipe Bisbal, Ernesto Zacur, Antonio Berruezo, Oleg V Aslanidi, Lluis Mont, Pablo Lamata
The left atrium (LA) can change in size and shape due to atrial fibrillation (AF)-induced remodeling. These alterations can be linked to poorer outcomes of AF ablation. In this study, we propose a novel comprehensive computational analysis of LA anatomy to identify what features of LA shape can optimally predict post-ablation AF recurrence. To this end, we construct smooth 3D geometrical models from the segmentation of the LA blood pool captured in pre-procedural MR images. We first apply this methodology to characterize the LA anatomy of 144 AF patients and build a statistical shape model that includes the most salient variations in shape across this cohort...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28259865/parametrization-of-an-in-silico-circulatory-simulation-by-clinical-datasets-towards-prediction-of-ventricular-function-following-assist-device-implantation
#15
Ajay Moza, Jonas Gesenhues, Rüdiger Autschbach, Dirk Abel, Rolf Rossaint, Thomas Schmitz-Rode, Andreas Goetzenich
BACKGROUND: Left ventricular assist device (LVAD) therapy has revolutionized the way end stage heart failure is treated today. Analysis of LVAD interaction with the whole cardiovascular system and its biological feedback loops is often conducted by means of computer models. Generating real time pressure volume loops (PV-loops) in patients, not using conductance catheters but routine diagnostics to feed an in-silico model could help to predict postoperative complications. METHODS: Routinely obtained hemodynamic measurements to evaluate myocardial function prior to LVAD implantation like pressure readings in the aorta, the left atrium and the left ventricle and simultaneous three-dimensional (3D) echocardiography recordings were assessed to parametrize a reduced computational model of the cardiovascular system...
March 6, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28255826/assessment-of-biventricular-systolic-strain-derived-from-the-two-dimensional-and-three-dimensional-speckle-tracking-echocardiography-in-lymphoma-patients-after-anthracycline-therapy
#16
Fei-Yan Song, Jing Shi, Ye Guo, Chu-Jie Zhang, Yu-Chen Xu, Qun-Ling Zhang, Xian-Hong Shu, Lei-Lei Cheng
The aim of this study was to investigate the usefulness of three-dimensional (3D) speckle tracking echocardiography (STE) for assessment of both left and right ventricular systolic function in patients with lymphoma after anthracycline chemotherapy, compared with two-dimensional (2D) STE. Totally eighty-nine patients undergoing anthracycline containing chemotherapy were studied. Echocardiographic assessment included 2D and 3D left ventricular (LV) global longitudinal strain (GLS), global circumferential strain (GCS) and right ventricular (RV) GLS...
March 2, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28254258/transcatheter-closure-of-a-complex-atrial-septal-defect-after-occluder-device-embolization
#17
Georgina Fuertes-Ferre, Felipe Hernández Hernández, Marta López Ramón, Juan Sánchez Rubio, Esther Sánchez Insa, Jose Gabriel Galache Osuna
Percutaneous closure is nowadays considered the treatment of choice of ostium secundum atrial septal defects (ASD). However, transcatheter closure can be highly challenging when we face an ASD with complex morphological features. The combination of different imaging modalities can be very helpful. This case shows the great value of using both intracardiac and real time 3D transesophageal echocardiography for the percutaneous closure of a complex iatrogenic ASD after device embolization.
February 20, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28249937/is-transnasal-tee-imaging-a-viable-alternative-to-conventional-tee-during-structural-cardiac-interventions-a-comparison-of-image-quality
#18
Dimitris Klettas, Emma Alcock, Rafal Dworakowski, Philip MacCarthy, Mark Monaghan
AIM: The role of transoesophageal echocardiography in cardiac interventional structural procedures is well established and appreciated. However, the need for general anaesthesia (GA) throughout the procedure remains a controversial issue. The aim of the present study is to assess the feasibility and imaging quality of using a transnasal microrobe that allows the usage of conscious sedation in patients that undergo cardiac structural interventional procedures without missing the benefits, guidance and navigation of conventional trans-procedural TEE...
March 1, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28240433/use-of-three-dimensional-transesophageal-echocardiography-to-evaluate-mitral-valve-morphology-for-risk-stratification-prior-to-mitral-valvuloplasty
#19
Loren Francis, Alan Finley, Walead Hessami
Mitral stenosis is often managed percutaneously with an interventional procedure such as balloon commissurotomy. Although this often results in an increased mitral valve area and improved clinical symptoms, this procedure is not benign and may have serious complications including the development of hemodynamically significant mitral valve regurgitation. Multiple scoring systems have been developed to attempt to risk stratify these patients prior to their procedure. CASE: A 64-year-old patient underwent an emergent mitral valve replacement after having percutaneous mitral balloon commissurotomy complicated by development of severe mitral regurgitation...
February 2017: Echocardiography
https://www.readbyqxmd.com/read/28240430/accuracy-of-an-automated-transthoracic-echocardiographic-tool-for-3d-assessment-of-left-heart-chamber-volumes
#20
Ernest Spitzer, Ben Ren, Osama I I Soliman, Felix Zijlstra, Nicolas M Van Mieghem, Marcel L Geleijnse
AIMS: The feasibility and accuracy of an automated adaptive algorithm (Heart Model) for the quantification of left heart chamber volumes and left ventricular ejection fraction has been reported earlier. An improved version of the algorithm is available, and we aimed to test its accuracy compared with manual 3D echocardiography. METHODS AND RESULTS: Apical 3D transthoracic datasets were obtained in 67 patients. Acquisitions covering ventricles and atria were performed for analysis using the automated software (Heart Model, Philips Healthcare)...
February 2017: Echocardiography
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