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Strain echo

Suma P Goudar, G Hamilton Baker, Shahryar M Chowdhury, Kimberly J Reid, Girish Shirali, Mark A Scheurer
BACKGROUND: Adult studies demonstrate that echocardiographic measurements of cardiac function using speckle tracking correlate with invasive measurements, but such data in the pediatric population are sparse. Our aim was to compare speckle-derived measures of cardiac function to measurements routinely obtained by cardiac catheterization in children. METHODS: Echocardiograms were performed on the day of cardiac catheterization. Using Tomtec 2D Cardiac Performance Analysis, longitudinal strain (LS), longitudinal strain rate (LSR), early diastolic LSR, and ejection fraction (EF) for the right and left ventricle (RV and LV) were calculated via speckle tracking...
October 14, 2016: Echocardiography
U Haque, C Stiver, B K Rivera, B Richards, N Ma, C L Cua, C V Smith, C H Backes
OBJECTIVE: Right ventricular (RV) performance among infants with bronchopulmonary dysplasia (BPD) remains poorly understood. We tested the hypothesis that myocardial deformation imaging (MDI) strain and strain rate would allow for differentiation between infants with severe and milder forms of BPD, independent of tissue Doppler imaging (TDI) and superior to conventional echocardiographic measurements. STUDY DESIGN: Infants with various severities of BPD (11 with none or mild, 13 with moderate and 10 with severe) underwent conventional echocardiography, TDI and MDI assessments at >36 weeks of corrected gestational age...
October 6, 2016: Journal of Perinatology: Official Journal of the California Perinatal Association
Melissa Leung, Vincent W Wong, Ertugrul Durmush, Victoria Phan, Mikey Xie, Dominic Y Leung
AIMS: Weight loss in obese patients leads to improved left ventricular (LV) function. It is unclear whether improving glycaemic control has additional benefits to weight loss alone in patients with type 2 diabetes, or if benefits of weight loss are mediated through improving glycaemic control. This case-control study examined the incremental impact of these approaches on LV function. METHODS: Three groups of age, gender, and baseline HbA1c-matched patients with type 2 diabetes and suboptimal glycaemic control were followed-up for 12 months...
October 1, 2016: Acta Diabetologica
Srinidhi J Meera, Tomo Ando, Daniel Pu, Shivaprasad Manjappa, Cynthia C Taub
PURPOSE: The left ventricle (LV) undergoes physiologic remodeling in adaptation to the hemodynamic changes that occur in pregnancy. Speckle tracking echocardiography (STE) is a novel and reliable tool to evaluate subtle myocardial alterations that have been utilized to assess myocardial changes in patients with diabetes mellitus (DM) but not in patients with gestational DM (GDM). We seek to evaluate changes in LV function using STE in patients with GDM compared with women with normal pregnancy...
September 28, 2016: Journal of Clinical Ultrasound: JCU
Xiaoke Cui, Takumi Washio, Tomoaki Chono, Hirotaka Baba, Jun-Ichi Okada, Seiryo Sugiura, Toshiaki Hisada
By tracking echocardiography images more accurately and stably, we can better assess myocardial functions. In this paper, we propose a new tracking method with deformable Regions of Interest (ROIs) aiming at rational pattern matching. For this purpose we defined multiple tracking points for an ROI and regarded these points as nodes in the Meshfree Method to interpolate displacement fields. To avoid unreasonable distortion of the ROI caused by noise and perturbation in echo images, we introduced a stabilization technique based on a nonlinear strain energy function...
September 15, 2016: Medical Image Analysis
Dawn S Hui, Fernando Fleischman, P Michael McFadden
BACKGROUND: Thromboembolism-in-transit straddling a patent foramen ovale (PFO) is a rare condition that requires urgent surgical intervention to prevent arterial emboli. CASE REPORT: We present the case of a 42-year-old female who presented with a symptomatic pulmonary embolism. Echocardiography identified a PFO, with a bridging thrombus-in-transit and evidence of right ventricular strain. Urgent surgery was performed because of the risk of systemic embolism. A large thrombus was identified during biatrial exploration...
2016: Ochsner Journal
Enrico Agabiti Rosei
Current Hypertension Guidelines emphasize the importance of assessing the presence of preclinical organ damage. In fact, an extensive evaluation of organ damage may increase the number of patients classified at high CV risk and therefore strongly influence the clinical management of patients. Hypertensive heart disease remains to date the form of organ damage for which there is the greatest amount of evidence of a strong independent prognostic significance. In the presence of a chronic pressure overload, a parallel addition of sarcomers takes place with an increase in myocyte width, which in turn increases left ventricular wall thickness; myocyte hypertrophy is also associated with apoptosis, collagen deposition and ventricular fibrosis with an impairment of coronary hemodynamics as well, thus profoundly influencing functional properties of the left (and right) ventricle...
September 2016: Journal of Hypertension
A King, J Thambyrajah, E Leng, M J Stewart
Herceptin (Trastuzumab) is a widely used and effective drug for the treatment of Her2+ breast cancer but its cardiotoxic side effects require regular monitoring by echocardiography. A 10% reduction in left ventricular ejection fraction can lead to suspension of treatment and therefore has significant implications for patient prognosis in terms of cardiac and cancer outcomes. Assessment of LV function by conventional 2D biplane method of discs (2DEF) has limitations in accuracy and reproducibility. Global longitudinal strain (GLS) is becoming more widely available and user friendly...
September 2016: Echo Research and Practice
R Stockill, C Le Gall, C Matthiesen, L Huthmacher, E Clarke, M Hugues, M Atatüre
The interaction between a confined electron and the nuclei of an optically active quantum dot provides a uniquely rich manifestation of the central spin problem. Coherent qubit control combines with an ultrafast spin-photon interface to make these confined spins attractive candidates for quantum optical networks. Reaching the full potential of spin coherence has been hindered by the lack of knowledge of the key irreversible environment dynamics. Through all-optical Hahn echo decoupling we now recover the intrinsic coherence time set by the interaction with the inhomogeneously strained nuclear bath...
2016: Nature Communications
Carlos A Peñaherrera, Ruben Peñaherrera, Maria C Duarte, Ernesto Peñaherrera
BACKGROUND: Metabolic syndrome increases cardiovascular risk, and causes damage to the vascular wall. Through this mechanism, it might increase arterial rigidity, leading to further complications and heart strain. The use of a device that measures arterial rigidity can help determine if metabolic syndrome is related to a higher vascular stiffness and changes in estimated arterial age. METHODOLOGY: Cross-sectional study at Luis Vernaza hospital of Guayaquil, Ecuador...
September 5, 2016: Diabetes & Metabolic Syndrome
Masaru Obokata, Masaaki Takeuchi, Kazuaki Negishi, Nobuyuki Ohte, Masaki Izumo, Eiji Yamashita, Mio Ebato, Satoshi Yuda, Masahiko Kurabayashi, Satoshi Nakatani
The purposes of this study were to investigate whether heart failure (HF) with reduced ejection fraction (HFrEF) and heart failure with preserved ejection fraction (HFpEF) share echocardiographic predictors and elucidate E/(e' × s') that predicts major adverse cardiovascular events (MACE) independent of other echocardiographic parameters in each HF group. We assessed tissue Doppler-derived parameters [E/e', E/(e' × s')] and left ventricular and right ventricular longitudinal strains in HFrEF (n = 340) and HFpEF (n = 102)...
August 12, 2016: American Journal of Cardiology
Sean M Hamlet, Christopher M Haggerty, Jonathan D Suever, Gregory J Wehner, Jonathan D Grabau, Kristin N Andres, Moriel H Vandsburger, David K Powell, Vincent L Sorrell, Brandon K Fornwalt
BACKGROUND: Advanced cardiovascular magnetic resonance (CMR) acquisitions often require long scan durations that necessitate respiratory navigator gating. The tradeoff of navigator gating is reduced scan efficiency, particularly when the patient's breathing patterns are inconsistent, as is commonly seen in children. We hypothesized that engaging pediatric participants with a navigator-controlled videogame to help control breathing patterns would improve navigator efficiency and maintain image quality...
2016: Journal of Cardiovascular Magnetic Resonance
Kai Lin, Leng Meng, Jeremy D Collins, Varun Chowdhary, Michael Markl, James C Carr
OBJECTIVES: To test the hypothesis that two-dimensional (2D) displacement encoding via stimulated echoes (DENSE) is a reproducible technique for the depiction of segmental myocardial motion in human subjects. MATERIALS AND METHODS: Following the approval of the institutional review board (IRB), 17 healthy volunteers without documented history of cardiovascular disease were recruited. For each participant, 2D DENSE were performed twice (at different days) and the images were obtained at basal, midventricular and apical levels of the left ventricle (LV) with a short-axis view...
August 25, 2016: Magnetic Resonance Imaging
Avinoam Shiran, David S Blondheim, Sara Shimoni, Mohamed Jabarren, David Rosenmann, Alex Sagie, David Leibowitz, Marina Leitman, Micha Feinberg, Ronen Beeri, Salim Adawi, Avraham Shotan, Sorel Goland, Lev Bloch, Sergio L Kobal, Noah Liel-Cohen
AIMS: Left ventricular (LV) two-dimensional longitudinal strain (2DLS) analysis by echocardiography has been suggested as a useful tool for the detection of acute coronary syndromes (ACS). Our aim was to determine whether 2DLS analysis could assist in triage of patients with chest pain (CP) in the emergency department (ED). METHODS AND RESULTS: We prospectively enrolled patients presenting to the ED with CP and suspected ACS but without a diagnostic ECG or elevated troponin...
August 26, 2016: European Heart Journal Cardiovascular Imaging
Ria Mazumder, Samuel Schroeder, Xiaokui Mo, Bradley D Clymer, Richard D White, Arunark Kolipaka
PURPOSE: To determine alteration in left ventricular (LV) myocardial stiffness (MS) with hypertension (HTN). Cardiac MR elastography (MRE) was used to estimate MS in HTN induced pigs and MRE-derived MS measurements were compared against LV pressure, thickness and circumferential strain. MATERIALS AND METHODS: Renal-wrapping surgery was performed to induce HTN in eight pigs. LV catheterization (to measure pressure) and cardiac MRI (1.5 Tesla; gradient echo-MRE and tagging) was performed pre-surgery at baseline (Bx), and post-surgery at month 1 (M1) and month 2 (M2)...
August 26, 2016: Journal of Magnetic Resonance Imaging: JMRI
Sven Nebelung, Björn Sondern, Simon Oehrl, Markus Tingart, Björn Rath, Thomas Pufe, Stefan Raith, Horst Fischer, Christiane Kuhl, Holger Jahr, Daniel Truhn
Purpose To determine if multiparametric magnetic resonance (MR) imaging mapping can be used to quantify the response to loading of histologically intact human knee cartilage. Materials and Methods Institutional review board approval and written informed consent were obtained. Twenty macroscopically intact cartilage-bone samples were obtained from the central lateral femoral condyles in 11 patients undergoing total knee replacement. A clinical 3.0-T MR imaging system was used to generate T1, T1ρ, T2, and T2* maps with inversion recovery, spin-lock multiple gradient-echo, multiple spin-echo, and multiple gradient-echo sequences...
August 26, 2016: Radiology
Srikanth Koneru, Patrick Collier, Adam Goldberg, Vedha Sanghi, Richard Grimm, Leonardo Rodriguez, Brian Griffin, Thomas Budd, Karen James, Zoran B Popović, Balaji Tamarappoo
Global longitudinal strain (GLS) is used to evaluate left ventricular (LV) performance after chemotherapy. Differentiating between reduction in GLS due to clinical change and normal temporal variability in measurement remains a challenge. We quantified interobserver, test-retest variability of GLS by expert observers in relation to variability of GLS quantified for clinical assessment by sonographers in our laboratory. We examined the temporal variability of GLS in 30 patients with normal LV ejection fraction (LVEF >53%) undergoing chemotherapy in the absence of change in medications and clinical symptoms in up to 5 sequential echocardiograms...
September 15, 2016: American Journal of Cardiology
Matthew Eric Ferguson, Ritu Sachdeva, Scott E Gillespie, Gemma Morrow, William Border
BACKGROUND: Hypertrophic cardiomyopathy (HCM) is associated with decreased exercise tolerance in children, presumably due to diastolic dysfunction. Modern imaging techniques to assess myocardial function during active exercise have not been applied to this population. We hypothesized that impaired contractile reserve, as assessed by tissue Doppler imaging (TDI) and strain, contributes to reduced exercise capacity in affected individuals. METHODS: Children (<18 years) with HCM and healthy age- and sex-matched controls were prospectively enrolled...
August 22, 2016: Echocardiography
Kamill Del Toro, Brian D Soriano, Sujatha Buddhe
BACKGROUND: Echocardiogram has limitations in effectively assessing right ventricular (RV) function in children post tetralogy of Fallot (TOF) repair. We evaluated the utility of speckle tracking echocardiography (STE)-based RV global longitudinal strain (GLS) for the assessment of RV systolic function. METHODS: All patients with repaired TOF who had both echocardiograms and cardiac MRI (CMR) within a 6-month interval were included. RV volumes and ejection fraction (EF) were obtained by CMRs...
August 20, 2016: Echocardiography
D Skultetyova, S Filipova
OBJECTIVE: The aim of the study is to investigate the relationship between daytime and night-time mean blood pressure (BP) on carotid artery stiffness (CAS) and wave intensity (WI) in 1) hypertensive patients (pts) and in 2) the subgroups formed according to the circadian patterns of BP. DESIGN AND METHOD: We investigated 148 hypertensive pts, mean age 58 years. The subgroups were created according to the circadian patterns (64 dippers, 56 non-dippers, 14 extreme dippers, 14 reverse dippers)...
September 2016: Journal of Hypertension
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