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Echocardiography strain

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https://www.readbyqxmd.com/read/28922120/motion-estimation-in-echocardiography-using-sparse-representation-and-dictionary-learning
#1
Nora Ouzir, Adrian Basarab, Herve Liebgott, Brahim Harbaoui, Jean-Yves Tourneret
This paper introduces a new method for cardiac motion estimation in 2D ultrasound images. The motion estimation problem is formulated as an energy minimization, whose data fidelity term is built using the assumption that the images are corrupted by multiplicative Rayleigh noise. In addition to a classical spatial smoothness constraint, the proposed method exploits the sparse properties of the cardiac motion to regularize the solution via an appropriate dictionary learning step. The proposed method is evaluated on one dataset with available ground-truth, including four sequences of highly realistic simulations...
September 18, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28917675/regional-variation-in-technetium-pyrophosphate-uptake-in-transthyretin-cardiac-amyloidosis-and-impact-on%C3%A2-mortality
#2
Brett W Sperry, Michael N Vranian, Albree Tower-Rader, Rory Hachamovitch, Mazen Hanna, Richard Brunken, Dermot Phelan, Manuel D Cerqueira, Wael A Jaber
OBJECTIVES: This study sought to investigate the regional uptake of technetium 99m-pyrophosphate (TcPYP) in transthyretin cardiac amyloidosis (ATTR) and its association with mortality. BACKGROUND: TcPYP nuclear scintigraphy is a diagnostic and prognostic tool in ATTR. Echocardiography has identified a pattern of regional variation in longitudinal strain (LS) with a gradient of improved strain from base to apex in ATTR. METHODS: Consecutive patients with ATTR were evaluated who underwent TcPYP nuclear scintigraphy with planar and attenuation corrected single-photon emission computed tomography (SPECT)...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28913656/new-insights-into-cardiac-involvement-in-juvenile-scleroderma-a-three-dimensional-echocardiographic-assessment-unveils-subclinical-ventricle-dysfunction
#3
Reyhan Dedeoglu, Amra Adroviç, Funda Oztunç, Sezgin Sahin, Kenan Barut, Ozgur Kasapcopur
Cardiac manifestations in juvenile scleroderma or systemic sclerosis (JSSc) have poor prognosis, begin in early stages of the disease, and remain clinically asymptomatic. New echocardiography modalities, such as 2D/3D speckle tracking (STE, strain analysis for regional and global ventricular functions), can detect cardiac involvement in early stages. We assessed 21 JSSc patients and 19 controls using 2D/3D STE. The left ventricular end diastolic volume, end systolic volume, and ejection fraction of the patient and control groups were significantly different (99...
September 14, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28912359/left-ventricular-strain-rate-is-reduced-during-voluntary-apnea-in-healthy-humans
#4
Joshua R Smith, Shelbi L Sutterfield, Dryden R Baumfalk, Kaylin D Didier, Shane M Hammer, Jacob Troy Caldwell, Carl J Ade
During an apneic event, sympathetic nerve activity increases resulting in subsequent increases in left ventricular afterload and myocardial work. It is unknown how cardiac mechanics are acutely impacted by the increased myocardial work during an apneic event. 10 healthy individuals (23 ± 3 yrs) performed multiple voluntary end-expiratory apnea (VEEA) maneuvers exposed to room air, while a subset (n=7) completed multiple VEEA exposed to hyperoxic air (100% FiO2). Beat-by-beat blood pressure, heart rate and stroke volume were measured continuously...
September 14, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28910586/global-and-regional-cardiac-function-in-lifelong-endurance-athletes-with-and-without-myocardial-fibrosis
#5
Thijs M H Eijsvogels, David L Oxborough, Rory O'Hanlon, Sanjay Sharma, Sanjay Prasad, Greg Whyte, Keith P George, Mathew G Wilson
The aim of the present study was to compare cardiac structure as well as global and regional cardiac function in athletes with and without myocardial fibrosis (MF). Cardiac magnetic resonance imaging with late gadolinium enhancement was used to detect MF and global cardiac structure in nine lifelong veteran endurance athletes (58 ± 5 years, 43 ± 5 years of training). Transthoracic echocardiography using tissue-Doppler and myocardial strain imaging assessed global and regional (18 segments) longitudinal left ventricular function...
September 14, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28902663/aldosterone-induces-left-ventricular-subclinical-systolic-dysfunction-a-strain-imaging-study
#6
Zheng-Wei Chen, Kuan-Chih Huang, Jen-Kuang Lee, Lung-Chun Lin, Ching-Way Chen, Yi-Yao Chang, Che-Wei Liao, Vin-Cent Wu, Chi-Shen Hung, Yen-Hung Lin
BACKGROUND: Primary aldosteronism is associated with a higher incidence of left ventricular (LV) hypertrophy and diastolic dysfunction than essential hypertension. However, systolic function via endocardial measurements is similar between patients with primary aldosteronism and essential hypertension. Speckle-tracking echocardiography is a sensitive tool which can detect subclinical impairments in systolic function. The aim of this study was to investigate aldosterone-induced subclinical impairments in systolic function...
September 11, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28899951/lowering-interleukin-12-activity-improves-myocardial-and-vascular-function-compared-with-tumor-necrosis-factor-a-antagonism-or-cyclosporine-in-psoriasis
#7
Ignatios Ikonomidis, Evangelia Papadavid, George Makavos, Ioanna Andreadou, Maria Varoudi, Kostas Gravanis, Kostas Theodoropoulos, George Pavlidis, Helen Triantafyllidi, Paraskevi Moutsatsou, Christina Panagiotou, John Parissis, Efstathios Iliodromitis, John Lekakis, Dimitrios Rigopoulos
BACKGROUND: Interleukin (IL)-12 activity is involved in the pathogenesis of psoriasis and acute coronary syndromes. We investigated the effects of IL-12 inhibition on vascular and left ventricular (LV) function in psoriasis. METHODS AND RESULTS: One hundred fifty psoriasis patients were randomized to receive an anti-IL-12/23 (ustekinumab, n=50), anti-tumor necrosis factor-a (TNF-α; etanercept, n=50), or cyclosporine treatment (n=50). At baseline and 4 months post-treatment, we measured (1) LV global longitudinal strain, twisting, and percent difference between peak twisting and untwisting at mitral valve opening (%untwMVO) using speckle-tracking echocardiography, (2) coronary flow reserve, (3) pulse wave velocity and augmentation index, (4) circulating NT-proBNP (N-terminal pro-B-type natriuretic peptide), TNF-α, IL-6, IL-12, IL-17, malondialdehyde, and fetuin-a...
September 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28899401/the-impact-of-preload-on-3-dimensional-deformation-parameters-principal-strain-twist-and-torsion
#8
Hyo-Suk Ahn, Yong-Kyun Kim, Ho Chul Song, Euy Jin Choi, Gee-Hee Kim, Jung Sun Cho, Sang-Hyun Ihm, Hee-Yeol Kim, Chan Seok Park, Ho-Joong Youn
BACKGROUND: Strain analysis is feasible using three-dimensional (3D) echocardiography. This approach provides various parameters based on speckle tracking analysis from one full-volume image of the left ventricle; however, evidence for its volume independence is still lacking. METHODS: Fifty-eight subjects who were examined by transthoracic echocardiography immediately before and after hemodialysis (HD) were enrolled. Real-time full-volume 3D echocardiographic images were acquired and analyzed using dedicated software...
September 12, 2017: Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/28895191/early-assessment-of-the-left-ventricular-function-by-epirubicin-induced-cardiotoxicity-in-postoperative-breast-cancer-patients
#9
Runlan Luo, Hongyan Cui, Dongmei Huang, Guangsen Li
OBJECTIVE: Epirubicin (Epi) is a potent and effective drug for many malignant cancers with serious cardiotoxicity. Therefore, layer-specific two-dimensional speckle tracking echocardiography (2D-STE) was used to evaluate the longitudinal and circumferential systolic function of the left ventricular for the early detection of cardiotoxicity in this retrospective work. METHODS: Overall, 130 female patients with postoperative breast cancer who did not receive radiotherapy were classified into three groups: Group A (control group, n = 40) without any chemotherapy; Group B (n = 44) administered Epi at 180 ~ 240 mg/m(2) ; and Group C (n = 46) administered Epi at ≥360 mg/m(2) ...
September 12, 2017: Echocardiography
https://www.readbyqxmd.com/read/28895173/cardiac-changes-in-moderately-malnourished-children-and-their-correlations-with-anthropometric-and-electrolyte-changes
#10
Osama El Razaky, Ahmed Naeem, Amr Donia, Doaa El Amrousy, Noha Elfeky
OBJECTIVE: To evaluate electrocardiographic and echocardiographic changes in moderately malnourished children and to correlate them with both anthropometric and electrolyte changes. PATIENTS AND METHOD: Sixty moderately malnourished children were taken as patient group, and 60 healthy children of matched age and sex were taken as control group. Weight, height, body mass index (BMI), serum albumin, and electrolytes were measured for all children. Electrocardiographic evaluation for calculated QT (QTc) and QT dispersion (QTd) was performed...
September 12, 2017: Echocardiography
https://www.readbyqxmd.com/read/28882335/usefulness-of-speckle-tracking-strain-echocardiography-for-assessment-of-risk-of-ventricular-arrhythmias-after-placement-of-a-left-ventricular-assist-device
#11
Ehimare Akhabue, Chan Seok Park, Sean Pinney, Anelechi Anyanwu, Farooq Chaudhry, Jagat Narula, Ajith Nair, Partho P Sengupta
Patients with continuous-flow left ventricular assist devices (LVADs) are at elevated risk of developing ventricular arrhythmias (VA), which can result in right ventricular dysfunction and abnormal LVAD function. Predictors of postoperative VA after LVAD placement are unclear. We hypothesized that global left ventricular circumferential strain (LVCS), a marker of transmural impairment in myocardial function, would independently predict postoperative VA in patients who underwent LVAD implantation. We studied 98 consecutive patients (57 ± 11 years, 83% men) who underwent HeartMate II axial flow LVAD placement...
July 31, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28875298/2d-longitudinal-lv-speckle-tracking-strain-pattern-in-breast-cancer-survivors-sports-activity-vs-exercise-as-prescription-model
#12
Giorgio Galanti, Gianni Pedrizzetti, Stefano Pedri, Laura Stefani
Prevention strategies are important to optimize and to manage heart care in breast cancer survivors. Regular physical activity at moderate intensity is normally proposed to maintain myocardial performance; however, no data is available about the different impact of different levels of physical exercise. 2D speckle tracking echocardiography (2DSTE) is an accepted method for early detection of myocardial dysfunction. The study aims to monitor the cardiac performances in breast cancer survivors by 2DSTE analysis to manage sports activity vs physical activity...
September 5, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28864152/deformation-analysis-of-myocardial-layers-detects-early-cardiac-dysfunction-after-chemotherapy-in-bone-marrow-transplantation-patients-a-continuous-and-additive-cardiotoxicity-process
#13
Ioannis A Paraskevaidis, George Makavos, Panagiotis Tsirigotis, Panagiotis Psarogiannakopoulos, John Parissis, Konstantinos Gkirkas, Ilias Pessach, Ignatios Ikonomidis
BACKGROUND: Chemotherapy-induced cardiotoxicity has not been extensively validated in bone marrow transplantation (BMT) patients. Speckle-tracking echocardiography is a sensitive method for the detection of subclinical cardiac dysfunction. METHODS: Cardiac function was prospectively assessed in 80 patients (44 men; mean age, 45 ± 11 years) after BMT for non-Hodgkin's lymphoma and acute or chronic myeloid leukemia by means of various echocardiographic techniques...
August 29, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28864150/standard-and-strain-measurements-by-echocardiography-detect-early-overloaded-right-ventricular-dysfunction-validation-against-hemodynamic-and-myocyte-contractility-changes-in-a-large-animal-model
#14
Amir Hodzic, Pierre Bobin, Delphine Mika, Mohamed Ly, Florence Lefebvre, Patrick Lechêne, Emmanuel Le Bret, Elodie Gouadon, Mathieu Coblence, Grégoire Vandecasteele, André Capderou, Jérôme Leroy, Catherine Rucker-Martin, Virginie Lambert
BACKGROUND: Early detection of right ventricular (RV) failure is required to improve the management of patients with congenital heart diseases. The aim of this study was to validate echocardiography for the early detection of overloaded RV dysfunction, compared with hemodynamic and myocyte contractility assessment. METHODS: Using a porcine model reproducing repaired tetralogy of Fallot, RV function was evaluated over 4 months using standard echocardiography and speckle-tracking compared with hemodynamic parameters (conductance catheter)...
August 29, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28862950/cardiac-adaptations-to-high-intensity-aerobic-training-in-premenopausal-and-recent-postmenopausal-women-the-copenhagen-women-study
#15
Jon Egelund, Peter G Jørgensen, Camilla M Mandrup, Thomas Fritz-Hansen, Bente Stallknecht, Jens Bangsbo, Michael Nyberg, Ylva Hellsten
BACKGROUND: We examined the role of menopause on cardiac dimensions and function and assessed the efficacy of exercise training before and after menopause. METHODS AND RESULTS: Two groups of healthy premenopausal (n=36, 49.4±0.3 years) and postmenopausal (n=37, 53.5±0.5 years) women with no history of cardiovascular disease and with a mean age difference between groups of only 4 years were studied. Cardiac dimensions and systolic and diastolic function were determined by transthoracic echocardiography with tissue Doppler imaging and 2-dimensional speckle tracking...
August 18, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28862031/benefits-of-lifelong-exercise-training-on-left-ventricular-function-after-myocardial-infarction
#16
Martijn Fh Maessen, Thijs Mh Eijsvogels, Guus Stevens, Arie Pj van Dijk, Maria Te Hopman
Background Endurance exercise training induces cardio-protective effects, but athletes are not exempted from a myocardial infarction. Evidence from animal studies suggests that exercise training attenuates pathological left ventricular remodelling following myocardial infarction. We tested the hypothesis that lifelong exercise training is related to attenuated pathological left ventricular remodelling after myocardial infarction as evidenced by better left ventricular systolic function in veteran athletes compared to sedentary peers...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28855658/the-diagnostic-value-of-global-longitudinal-strain-gls-on-myocardial-infarction-size-by-echocardiography-a-systematic-review-and-meta-analysis
#17
Kai-Yue Diao, Zhi-Gang Yang, Min Ma, Yong He, Qin Zhao, Xi Liu, Yue Gao, Lin-Jun Xie, Ying-Kun Guo
A systematic review and meta-analysis of prospective randomized studies were performed to evaluate the diagnostic value of measuring global longitudinal strain (GLS) using speckle tracking echocardiography (STE) in determining myocardial infarction (MI) size, which is usually measured based on late gadolinium enhancement (LGE) by cardiovascular magnetic resonance (CMR). Eleven trials with a total of 765 patients were included. The pooled correlation was 0.70 (95% CI: 0.64, 0.74) between two-dimensional (2D) GLS and the LGE percentage, and it was 0...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28844519/functional-cardiac-recovery-and-hematologic-response-to-chemotherapy-in-patients-with-light-chain-amyloidosis-from-the-stanford-university-amyloidosis-registry
#18
Mirela Tuzovic, Yukari Kobayashi, Matthew Wheeler, Christopher Barrett, Michaela Liedtke, Richard Lafayette, Stanley Schrier, Francois Haddad, Ronald Witteles
Cardiac involvement is common in patients with light-chain (AL) amyloidosis and portends a poor prognosis, although little is known about the changes in cardiac mechanics after chemotherapy. We sought to explore the relation between amyloidosis staging and baseline cardiac mechanics and to investigate short-term changes in cardiac mechanics after chemotherapy. We identified 41 consecutive patients from the Stanford Amyloid Center who had echocardiograms and free light-chain values before and after chemotherapy, along with 40 age- and gender-matched controls...
July 25, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28844500/right-atrial-function-and-prognosis-in-idiopathic-pulmonary-arterial-hypertension
#19
Michele D'Alto, Antonello D'Andrea, Giovanni Di Salvo, Giancarlo Scognamiglio, Paola Argiento, Emanuele Romeo, Giovanni Maria Di Marco, Agostino Mattera Iacono, Eduardo Bossone, Berardo Sarubbi, Maria Giovanna Russo
AIM: To determine whether right atrial (RA) function has prognostic value in patients with idiopathic pulmonary arterial hypertension (PAH). METHODS AND RESULTS: Overall, 104 patients (70 female, mean age 58±13years) with idiopathic PAH underwent standard Doppler echocardiography and strain and strain rate (SR) analysis before right heart catheterization. At a mean follow-up of 22±7months, 30 patients (29%) had clinical worsening. On Cox multivariable proportional-hazards regression analysis, RA reservoir function measured as peak longitudinal SR (hazard ratio [HR] 0...
August 24, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28840383/comprehensive-echocardiographic-assessment-of-biventricular-function-in-the-rabbit-animal-model-in-cardiovascular-research-feasibility-and-normal-values
#20
Sara Roldan Ramos, Guido Pieles, Wei Hui, Ryo Ishii, Cameron Slorach, Mark K Friedberg
Quantification of cardiac structure and function is central in cardiovascular research. Rabbits are valuable research models of cardiovascular human disease; however, there is little normal data available. The aim of this study was to investigate feasibility and provide normal values for comprehensive echocardiographic assessment of biventricular function in rabbits. New Zealand white rabbits underwent trans-thoracic echocardiography using a general electric (GE) Vivid 7/E9 system with a 10 MHz transducer, under light sedation, to evaluate biventricular function and dimensions...
August 24, 2017: International Journal of Cardiovascular Imaging
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