Search

Your search keyword '"WEINERT, LYNN"' showing total 632 results
Start Over Author "WEINERT, LYNN"

Refine your results

632 results on '"WEINERT, LYNN"'

158. Live 3-Dimensional Transesophageal Echocardiography

Author

Sugeng, Lissa, primary, Shernan, Stanton K., additional, Salgo, Ivan S., additional, Weinert, Lynn, additional, Shook, Doug, additional, Raman, Jai, additional, Jeevanandam, Valluvan, additional, DuPont, Frank, additional, Settlemier, Scott, additional, Savord, Bernard, additional, Fox, John, additional, Mor-Avi, Victor, additional, and Lang, Roberto M., additional

Published
2008
Full Text
View/download PDF

160. Abstract 1961: Multi-Modality Comparison of Volumetric Quantification of Right Ventricular Volumes Using a Novel Semi-Automated Border Detection Software

Author

Sugeng, Lissa, primary, Weinert, Lynn, additional, Niel, Johannes, additional, Steringer-Mascherbauer, Regina, additional, Hyca, Martin, additional, Bartolles, Rolf, additional, Schummers, Georg, additional, Mor-Avi, Victor, additional, Lang, Roberto M, additional, and Nesser, Hans-Joachim, additional

Published
2007
Full Text
View/download PDF

165. Quantitative Assessment of Left Ventricular Size and Function

Author

Sugeng, Lissa, primary, Mor-Avi, Victor, additional, Weinert, Lynn, additional, Niel, Johannes, additional, Ebner, Christian, additional, Steringer-Mascherbauer, Regina, additional, Schmidt, Frank, additional, Galuschky, Christian, additional, Schummers, Georg, additional, Lang, Roberto M., additional, and Nesser, Hans-Joachim, additional

Published
2006
Full Text
View/download PDF

166. Quantification of Regional Left Ventricular Wall Motion from Real-time 3-Dimensional Echocardiography in Patients with Poor Acoustic Windows: Effects of Contrast Enhancement Tested Against Cardiac Magnetic Resonance

Author

Corsi, Cristiana, primary, Coon, Patrick, additional, Goonewardena, Sascha, additional, Weinert, Lynn, additional, Sugeng, Lissa, additional, Polonsky, Tamar S., additional, Veronesi, Federico, additional, Caiani, Enrico G., additional, Lamberti, Claudio, additional, Bardo, Dianna, additional, Lang, Roberto M., additional, and Mor-Avi, Victor, additional

Published
2006
Full Text
View/download PDF

173. Rapid online quantification of left ventricular volume from real-time three-dimensional echocardiographic data

Author

Jacobs, Lawrence D., primary, Salgo, Ivan S., additional, Goonewardena, Sascha, additional, Weinert, Lynn, additional, Coon, Patrick, additional, Bardo, Dianna, additional, Gerard, Olivier, additional, Allain, Pascal, additional, Zamorano, Jose L., additional, de Isla, Leopoldo P., additional, Mor-Avi, Victor, additional, and Lang, Roberto M., additional

Published
2005
Full Text
View/download PDF

179. Role of 3D echocardiography derived color-coded parametric models of the mitral valve in differential diagnosis of prolapse and billowing.

Author

Addetia, Karima, Weinert, Lynn, Salgo, Ivan S, Lang, Roberto M, and Mor-Avi, Victor

Abstract

Differentiation between mitral valve (MV) prolapse (MVP) and billowing (MVB) on 2D echocardiography (2DE) is challenging. We hypothesized that color-coded models of maximal leaflet displacement from the annular plane into the atrium derived from 3D transesophageal echocardiography (3DTEE) would allow discrimination between these lesions. [ABSTRACT FROM PUBLISHER]

Published
2013

180. Effects of frame rate on 3D speckle tracking based measurements of myocardial deformation.

Author

Yodwut, Chattanong, Weinert, Lynn, Klas, Berthold, Lang, Roberto M., and Mor-Avi, Victor

Abstract

Myocardial strain has been shown useful in the evaluation of left ventricular (LV) function using 2D and 3D speckle tracking echocardiography (STE). 3D STE is potentially more accurate, because it is not affected by through-plane motion. While with 2D STE, high frame rates are necessary because speckles may move out of the imaging plane, we hypothesized that they should be tracked with 3D STE, even with lower frame rates, because they always remain within the scan volume. Sixteen normal volunteers underwent 2D (at 62±9 fps) and 3D imaging, which was performed at 4 different frame rates, achieved by varying the number of beats used for volume acquisition (6, 4, 2 and 1). The principal components of strain and the corresponding strain-rates were calculated from both 2D and 3D images. Strain and strain-rates were the same for 3D STE with 6- and 4-beat datasets, corresponding to 25 and 18 fps, respectively, and were not significantly lower than 2D STE-derived values, indicating that there was no loss of information due to lower frame rates. In contrast, 3D STE with 1- and 2-beat datasets, corresponding to 5 and 10 fps, resulted in significantly lower values. 3D STE strains and strain-rates are not compromised by low frame rates, when derived from 18 or 25 fps datasets, but are underestimated with lower frame rates. [ABSTRACT FROM PUBLISHER]

Published
2012

182. Dynamic Three-Dimensional Color Flow Doppler: An Improved Technique for the Assessment of Mitral Regurgitation

Author

Sugeng, Lissa, primary, Spencer, Kirk T., additional, Mor-Avi, Victor, additional, DeCara, Jeanne M., additional, Bednarz, James E., additional, Weinert, Lynn, additional, Korcarz, Claudia E., additional, Lammertin, Georgeanne, additional, Balasia, Beth, additional, Jayakar, David, additional, Jeevanandam, Valluvan, additional, and Lang, Roberto M., additional

Published
2003
Full Text
View/download PDF

189. Hemolysis After Mitral Valve Repair

Author

Ward, R. Parker, primary, Sugeng, Lissa, additional, Weinert, Lynn, additional, Korcarz, Claudia, additional, Verdino, Ralph J., additional, Spencer, Kirk T., additional, and Lang, Roberto M., additional

Published
2000
Full Text
View/download PDF

190. Right Ventricular Strain in Pulmonary Arterial Hypertension: A 2D Echocardiography and Cardiac Magnetic Resonance Study.

Author

Freed, Benjamin H., Tsang, Wendy, Bhave, Nicole M., Patel, Amit R., Weinert, Lynn, Yamat, Megan, Vicedo, Beatriz Miralles, Dill, Karin, Mor‐Avi, Victor, Gomberg‐Maitland, Mardi, and Lang, Roberto M.

Subjects
MAGNETIC resonance angiography, RIGHT heart ventricle, PULMONARY hypertension, ECHOCARDIOGRAPHY, LONGITUDINAL method, REGRESSION analysis, RESEARCH funding, DATA analysis software, DESCRIPTIVE statistics, PROGNOSIS, PHYSIOLOGY
Abstract

Background Right ventricular ( RV) strain is a potentially useful prognostic marker in patients with pulmonary arterial hypertension ( PAH). However, published reports regarding the accuracy of two-dimensional echocardiography (2 DE)-derived RV strain against an independent reference in this patient population are limited. The aims of this study were: (1) to study the relationship between 2 DE RV longitudinal strain and cardiovascular magnetic resonance ( CMR)-derived RV ejection fraction ( RVEF) in patients with PAH; (2) to compare 2 DE-derived and CMR-derived RV longitudinal strain in these patients; and (3) to determine the reproducibility of these measurements. Methods Thirty patients with PAH underwent 2 DE and CMR imaging within a 2-hour time period. 2 DE RV longitudinal strain was measured from a focused RV apical four-chamber view using speckle tracking software. CMR RV longitudinal strain was measured from short-axis slices acquired using fast-strain-encoded sequence. Global peak systolic RV longitudinal strain was calculated for both 2 DE and CMR. Results RV longitudinal strain using 2 DE software correlated well with CMR-derived RVEF (R = 0.69, P = 0.0006). There was moderate agreement when comparing 2 DE to CMR RV longitudinal strain (R = 0.74, P = 0.0002; bias −1%, limits of agreement −9 to 7%). Inter-observer variability and intra-observer variability for RV longitudinal strain were lower for 2 DE than CMR. Conclusions RV longitudinal strain by 2 DE provides a good alternative for CMR-derived RVEF in patients with PAH. The moderate agreement in strain measurements between 2 DE and CMR suggests that further software improvements are needed before these measurements can be used interchangeably in clinical practice. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

191. 3D Echocardiographic Location of Implantable Device Leads and Mechanism of Associated Tricuspid Regurgitation.

Author

Mediratta, Anuj, Addetia, Karima, Yamat, Megan, Moss, Joshua D., Nayak, Hemal M., Burke, Martin C., Weinert, Lynn, Maffessanti, Francesco, Jeevanandam, Valluvan, Mor-Avi, Victor, and Lang, Roberto M.

Abstract

Objectives: This study sought to: 1) determine the feasibility of using 3-dimensional transthoracic echocardiography (3D TTE) in patients with implantable cardiac resynchronization devices, pacemakers, and defibrillators to visualize the device leads in the right heart and their position relative to the tricuspid valve leaflets; 2) determine the prevalence of different lead positions; and 3) study the relationship between lead location and tricuspid regurgitation (TR) severity. Background: Pacemaker, defibrillator, and cardiac resynchronization device implantation is currently guided by fluoroscopy, not allowing targeted lead positioning relative to the tricuspid valve leaflets. These leads have been reported to cause TR of variable degrees, but echocardiography is not routinely used to elucidate the mechanisms of lead interference with tricuspid valve leaflets in individual patients. Methods: 3D TTE full-volume images of the right ventricle and/or zoomed images of the tricuspid valve were obtained in 121 patients with implanted devices. Images were viewed offline to determine the position of the device-lead relative to the tricuspid valve leaflets. Severity of TR was estimated on the basis of vena contracta measurements. Results: 3D TTE clearly depicted lead position in 90% of patients. The right ventricular lead was impinging on either the posterior (20%) or septal (23%) leaflet or was not interfering with leaflet motion (53%) when positioned near the posteroseptal commissure or in the central portion of the tricuspid valve orifice. In the remaining patients, leads were impinging on the anterior leaflet (4%) or positioned in either the anteroposterior or anteroseptal commissure (3%). Leads interfering with normal leaflet mobility were associated with more TR than nonimpinging leads (vena contracta: median 0.62 cm [1st and 3rd quartiles: 0.51, 0.84 cm] vs. 0.27 cm [1st and 3rd quartiles: 0.00, 0.48 cm]; p < 0.001). Conclusions: 3D TTE showed a clear association between device lead position and TR. To minimize TR induced by device-leads, 3D TTE guidance should be considered for placement in a commissural position. [Copyright &y& Elsevier]

Published
2014
Full Text
View/download PDF

192. Objective evaluation of regional left ventricular wall motion during dobutamine stress echocardiographic studies using segmental analysis of color kinesis images

Author

Koch, Rick, primary, Lang, Roberto M, additional, Garcia, Maria-Jurema, additional, Weinert, Lynn, additional, Bednarz, James, additional, Korcarz, Claudia, additional, Coughlan, Brendan, additional, Spiegel, Alan, additional, Kaji, Eugene, additional, Spencer, Kirk T, additional, and Mor-Avi, Victor, additional

Published
1999
Full Text
View/download PDF

195. Apical Hypertrophic Cardiomyopathy

Author

Reddy, Vivek, primary, Korcarz, Claudia, additional, Weinert, Lynn, additional, Al-Sadir, Jafar, additional, Spencer, Kirk T., additional, and Lang, Roberto M., additional

Published
1998
Full Text
View/download PDF

199. Color Kinesis

Author

BEDNARZ, JAMES, primary, VIGNON, PHILIPPE, additional, MOR‐AVI, VICTOR, additional, WEINERT, LYNN, additional, KOCH, RICK, additional, SPENCER, KIRK, additional, and LANG, ROBERTO M., additional

Published
1998
Full Text
View/download PDF

200. Segmental Analysis of Color Kinesis Images

Author

Mor-Avi, Victor, primary, Vignon, Philippe, additional, Koch, Rick, additional, Weinert, Lynn, additional, Garcia, Maria J., additional, Spencer, Kirk T., additional, and Lang, Roberto M., additional

Published
1997
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results