Abstract:
BACKGROUND:The aim of the study was to perform a feature tracking analysis on cine magnetic resonance (MR) images to elucidate if functional measurements of the motion of the left ventricular wall may detect scar defined with gadolinium enhanced MR.Myocardial contraction can be measured in terms of the velocity, displacement and local deformation (strain) of a particular myocardial segment. Contraction of the myocardial wall will be reduced in the presence of scar and as a consequence of reduced myocardial blood flow. METHODS:Thirty patients (3 women and 27 men) were selected based on the presence or absence of extensive scar in the anteroseptal area of the left ventricle. The patients were investigated in stable clinical condition, 4-8 weeks post ST-elevation myocardial infarction treated with percutaneous coronary intervention. Seventeen had a scar area >75% in at least one anteroseptal segment (scar) and thirteen had scar area <1% (non-scar). Velocity, displacement and strain were calculated in the longitudinal direction, tangential to the endocardial outline, and in the radial direction, perpendicular to the tangent. RESULTS:In the scar patients, segments with scar showed lower functional measurements than remote segments. Radial measurements of velocity, displacement and strain performed better in terms of receiver-operator-characteristic curves (ROC) than the corresponding longitudinal measurements. The best area-under-curve was for radial strain, 0.89, where a cut-off value of 38.8% had 80% sensitivity and 86% specificity for the detection of a segment with scar area >50%. As a percentage of the mean, intraobserver variability was 16-14-26% for radial measurements of displacement-velocity-strain and corresponding interobserver variability was 13-12-18%. CONCLUSION:Feature tracking analysis of cine-MR displays velocity, displacement and strain in the radial and longitudinal direction and may be used for the detection of transmural scar. The accuracy and repeatability of the radial functional measurements is satisfactory and global measures agree.
journal_name
Cardiovasc Ultrasoundjournal_title
Cardiovascular ultrasoundauthors
Maret E,Todt T,Brudin L,Nylander E,Swahn E,Ohlsson JL,Engvall JEdoi
10.1186/1476-7120-7-53subject
Has Abstractpub_date
2009-11-16 00:00:00pages
53issn
1476-7120pii
1476-7120-7-53journal_volume
7pub_type
杂志文章abstract:BACKGROUND:Though hemodialysis (HD) acutely improves cardiac function, the impact of background diseases like coronary artery disease (CAD) and Type 2 diabetes (DM) in the setting of end-stage renal disease (ESRD) is not known. Tissue velocity echocardiography (TVE) offers a fast choice to follow changes in myocardial ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-4-9
更新日期:2006-02-02 00:00:00
abstract:BACKGROUND:Left ventricular (LV) ejection fraction (LVEF) assessed by two-dimensional echocardiography (2DE) is the most widely used parameter for clinical decision-making, but reproducibility and accuracy problems remain. We evaluated the usefulness of a novel training program based on cardiac magnetic resonance (CMR)...
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pub_type: 杂志文章
doi:10.1186/s12947-019-0173-z
更新日期:2019-10-31 00:00:00
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journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-10-12
更新日期:2012-03-22 00:00:00
abstract:BACKGROUND:Aortic valve stenosis (AS) is the most common primary valvular heart disease leading to surgical or percutaneous aortic valve replacement (AVR) in Europe and its prevalence keeps growing. While other risk factors in severe AS are well documented, little is known about the prognostic value of left atrial (LA)...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-020-00231-0
更新日期:2021-01-02 00:00:00
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journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-12-2
更新日期:2014-01-28 00:00:00
abstract:BACKGROUND:The percentage of hypertrophic cardiomyopathy (HCM) patients who are in high risk for Sudden Death (SD) constitutes only a minority of all HCM population but the incidence of SD in this subset is high (at least 5% annually). The identification of this small but important proportion of high risk HCM patients ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-7-37
更新日期:2009-07-26 00:00:00
abstract:BACKGROUND:Myocardial contractility can be investigated using longitudinal peak strain. It can be calculated using the Doppler-derived TDI method and the non-Doppler method based on tissue tracking on B-mode images. Both are validated and show good reproducibility, but no comparative analysis of their results has yet b...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-5-7
更新日期:2007-02-07 00:00:00
abstract:BACKGROUND:Left ventricular free wall rupture occurs in up to 10% of the in-hospital deaths following myocardial infarction. It is mainly associated with posterolateral myocardial infarction and its antemortem diagnosis is rarely made. Contrast echocardiography has been increasingly used for the evaluation of myocardia...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-4-7
更新日期:2006-01-26 00:00:00
abstract::This review article is aimed at comparing the results of histopathological and clinical imaging studies to assess coronary collateral circulation in humans. The role of collaterals, as emerging from morphological studies in both normal and atherosclerotic coronary vessels, is described; in addition, present role and f...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章,评审
doi:10.1186/1476-7120-3-6
更新日期:2005-03-01 00:00:00
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journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-1-5
更新日期:2003-05-16 00:00:00
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journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-10-50
更新日期:2012-12-27 00:00:00
abstract::A 25-year-old woman with a history of kidney transplantation for lupus nephritis was referred for the evaluation and management of a mass incidentally found on echocardiography. An oval and pedunculated mass attached to the tricuspid valve was managed with nonsurgical treatment. No symptoms and complications attributa...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-7-44
更新日期:2009-09-04 00:00:00
abstract::This review article summarizes the results of histopathological studies to assess heart failure in humans. Different histopathological features underlying the clinical manifestations of heart failure are reviewed. In addition, the present role of echocardiographic techniques in assessing the failing heart is briefly s...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章,评审
doi:10.1186/1476-7120-5-5
更新日期:2007-01-30 00:00:00
abstract:OBJECTIVE:Cardiac resynchronization therapy is proven efficacious in patients with heart failure (HF). Presence of biventricular HF is associated with a worse prognosis than having only left ventricular (LV) HF and pacing might deteriorate heart function. The aim of the study was to assess a possible significance of ri...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-9-28
更新日期:2011-10-26 00:00:00
abstract:BACKGROUND:Dual imaging stress echocardiography, combining the evaluation of wall motion and coronary flow reserve (CFR) on the left anterior descending artery (LAD), and computed tomography coronary angiography (CTCA) are established techniques for assessing prognosis in chest pain patients. In this study we compared ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-015-0013-8
更新日期:2015-04-21 00:00:00
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journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-6-31
更新日期:2008-06-20 00:00:00
abstract:BACKGROUND:To explore the association between the ratio of tricuspid annular plane systolic excursion (TAPSE) and pulmonary arterial systolic pressure (PASP), and long- and short-term outcomes in mechanically ventilated septic shock patients. METHODS:Septic shock patients admitted to the intensive care unit (ICU) were...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-020-00198-y
更新日期:2020-06-12 00:00:00
abstract::To make assessment of paravalvular aortic leakage (PVL) after transcatheter aortic valve implantation (TAVI) more uniform the second Valve Academic Research Consortium (VARC) recently updated the echocardiographic criteria for mild, moderate and severe PVL. In the VARC recommendation the assessment of the circumferent...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章,评审
doi:10.1186/s12947-016-0080-5
更新日期:2016-09-06 00:00:00
abstract::A high incidence of left ventricular diastolic dysfunction and increased risk of cardiovascular events have been reported in patients with diabetes mellitus. Sodium glucose cotransporter 2 (SGLT2) inhibitors selectively inhibit kidney glucose and sodium reabsorption, and cardiovascular benefits of SGLT2 inhibitors bey...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-019-0177-8
更新日期:2019-11-13 00:00:00
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journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-8-36
更新日期:2010-09-02 00:00:00
abstract:BACKGROUND:Ultrasound contrast agents (UCAs) allow the enhancement of vascular definition, thereby providing more diagnostic information. LK565 is a new second-generation UCA based on synthetic polymers of aspartic acid which is eliminated from the blood stream via phagocytosis. LK565 forms very stable air-filled micro...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-2-16
更新日期:2004-09-10 00:00:00
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journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-11-6
更新日期:2013-02-03 00:00:00
abstract::The growing need for coronary evaluation has raised interest in non-radioactive, non-invasive monitoring systems. In particular, radiation exposure during coronary investigations has been shown to be a possible cause of an enhanced risk of secondary tumors. Literature search has indicated that transthoracic echocardio...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章,评审
doi:10.1186/s12947-016-0048-5
更新日期:2016-01-19 00:00:00
abstract:BACKGROUND:We investigated longitudinal right ventricular (RV) function assessed using speckle-tracking strain echocardiography in patient with myocardial infarction (MI), and identified the contributing factors for RV dysfunction. METHODS:We retrospectively studied 71 patients with old MI (the OMI group) and 45 norma...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-11-23
更新日期:2013-06-27 00:00:00
abstract:BACKGROUND:The contractile response of patients with heart failure (HF) may be assessed by exercise stress echocardiography (ESE)-derived indexes. We sought to test whether ESE parameters are useful to identify the risk of adverse left ventricular (LV) remodeling in patients with chronic HF and reduced or mildly reduce...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-019-0157-z
更新日期:2019-04-06 00:00:00
abstract:BACKGROUND:Primary intracardiac tumours are rare, there are however several entities that can mimic tumours. Contrast echocardiography has been suggested to aid the differentiation of various suspected masses. We present a case where transthoracic echocardiography completely misdiagnosed a left atrial mass, partly due ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-7-4
更新日期:2009-01-29 00:00:00
abstract:BACKGROUND:Myocardial deformation imaging using speckle-tracking echocardiography to assess global longitudinal strain (GLS) is today considered a more sensitive measure of left ventricular (LV) systolic function than ejection fraction. General anesthesia and positive pressure ventilation (PPV) are known to change the ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-019-0165-z
更新日期:2019-08-10 00:00:00
abstract:BACKGROUND:The goal of this study was to determine if left ventricular (LV) global longitudinal strain (GLS) predicts heart failure (HF) readmission in patients with acute decompensated heart failure. METHODS AND RESULTS:Two hundred ninety one patients were enrolled at the time of admission for acute decompensated hea...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-017-0098-3
更新日期:2017-03-15 00:00:00
abstract::Pulmonary embolism is a common cardiovascular emergency, but it is still often misdiagnosed due to its unspecific clinical symptoms. Elevated troponin concentrations are associated with greater morbidity and mortality in patients with pulmonary embolism. Right ventricular ischemia due to increased right ventricular af...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-8-50
更新日期:2010-11-24 00:00:00
abstract:BACKGROUND:Established methods to determine asynchrony suffer from high intra- and interobserver variability and failed to improve patient selection for cardiac resynchronization therapy (CRT). Thus, there is a need for easy and robust approaches to reliably assess cardiac asynchrony. METHODS AND RESULTS:We performed ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-7-46
更新日期:2009-09-25 00:00:00