Abstract:
INTRODUCTION:Serial monitoring of patients participating in clinical trials of carotid artery therapy requires noninvasive precision methods that are inexpensive, safe and widely available. Noninvasive ultrasonic duplex Doppler velocimetry provides a precision method that can be used for recruitment qualification, pre-treatment classification and post treatment surveillance for remodeling and restenosis. The University of Washington Ultrasound Reading Center (UWURC) provides a uniform examination protocol and interpretation of duplex Doppler velocity measurements. METHODS:Doppler waveforms from 6 locations along the common carotid and internal carotid artery path to the brain plus the external carotid and vertebral arteries on each side using a Doppler examination angle of 60 degrees are evaluated. The UWURC verifies all measurements against the images and waveforms for the database, which includes pre-procedure, post-procedure and annual follow-up examinations. Doppler angle alignment errors greater than 3 degrees and Doppler velocity measurement errors greater than 0.05 m/s are corrected. RESULTS:Angle adjusted Doppler velocity measurements produce higher values when higher Doppler examination angles are used. The definition of peak systolic velocity varies between examiners when spectral broadening due to turbulence is present. Examples of measurements are shown. DISCUSSION:Although ultrasonic duplex Doppler methods are widely used in carotid artery diagnosis, there is disagreement about how the examinations should be performed and how the results should be validated. In clinical trails, a centralized reading center can unify the methods. Because the goals of research examinations are different from those of clinical examinations, screening and diagnostic clinical examinations may require fewer velocity measurements.
journal_name
Cardiovasc Ultrasoundjournal_title
Cardiovascular ultrasoundauthors
Beach KW,Bergelin RO,Leotta DF,Primozich JF,Sevareid PM,Stutzman ET,Zierler REdoi
10.1186/1476-7120-8-39subject
Has Abstractpub_date
2010-09-07 00:00:00pages
39issn
1476-7120pii
1476-7120-8-39journal_volume
8pub_type
杂志文章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: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)...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-019-0173-z
更新日期:2019-10-31 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
abstract:BACKGROUND:Tissue Doppler Imaging (TDI) is a sensible and feasible method to detect longitudinal left ventricular (LV) systolic dysfunction (LVSD) in patients with diabetes mellitus, hypertension or ischemic heart disease. In this study, we hypothesized that longitudinal LVSD assessed by TDI predicted inducible myocard...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-016-0064-5
更新日期:2016-06-01 00:00:00
abstract::In the standard accepted concept, contractility is the intrinsic ability of heart muscle to generate force and to shorten, independently of changes in the preload or afterload with fixed heart rates. At molecular level the crux of the contractile process lies in the changing concentrations of Ca2+ ions in the myocardi...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章,评审
doi:10.1186/1476-7120-3-27
更新日期:2005-09-08 00:00:00
abstract:BACKGROUND:Transthoracic echocardiography (TTE) may be used for direct inspection of various parts of the main coronary arteries for detection of coronary stenoses and occlusions. We aimed to assess the feasibility of TTE to visualise the complete segments of the left main (LM), left descending (LAD), circumflex (Cx) a...
journal_title:Cardiovascular ultrasound
pub_type: 临床试验,杂志文章
doi:10.1186/1476-7120-7-58
更新日期:2009-12-22 00:00:00
abstract:OBJECTIVE:Correlate the anatomic features of atrioventricular septal defect with echocardiographic images. MATERIALS AND METHODS:Sixty specimen hearts were studied by sequential segmental analysis. Echocardiograms were performed on 34 patients. Specimen hearts with findings equivalent to those of echocardiographic ima...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-6-33
更新日期:2008-06-24 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::Echocardiography is one of the most important diagnostic testing in cardiology. The presence of a breast implant overlying heart can cause significant impairment of the echocardiographic acoustic window. Breast implants are increasing in popularity in the USA and the Federal Drug and Food Administration (FDA) just app...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章,评审
doi:10.1186/1476-7120-5-9
更新日期:2007-02-23 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:BACKGROUND:Shear Wave Elastography (SWE) imaging is a novel ultrasound technique for quantifying tissue elasticity. Studies have demonstrated that SWE is able to differentiate between diseased and normal tissue in a wide range clinical applications. However its applicability to atherosclerotic carotid disease has not b...
journal_title:Cardiovascular ultrasound
pub_type: 临床试验,杂志文章
doi:10.1186/1476-7120-12-49
更新日期:2014-12-08 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
abstract:BACKGROUND:A history of previous cardiac disease increases the maternal mortality risk by as much as 100%. There is no consensus on the absolute contraindications to vaginal delivery in valvular heart disease, but central regional anesthesia is traditionally considered contraindicated in patients with severe aortic ste...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-020-00226-x
更新日期:2020-11-02 00:00:00
abstract:BACKGROUND:Cardiac shock wave therapy (CSWT) improves cardiac function in patients with severe coronary artery disease (CAD). We aimed to evaluate the clinical outcomes of a new CSWT treatment regimen. METHODS:The 55 patients with severe CAD were randomly divided into 3 treatment groups. The control group (n = 14) rec...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章,随机对照试验
doi:10.1186/1476-7120-10-35
更新日期:2012-08-17 00:00:00
abstract::In this case report we describe a rare case of right atrium myxoma that coexisted with antiphospholipid syndrome in a young woman. We describe the unusual findings and diagnostic challenges combined with a review of the literature. ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-7-47
更新日期:2009-10-11 00:00:00
abstract::Miniaturization has evolved in the creation of a pocket-size imaging device which can be utilized as an ultrasound stethoscope. This study assessed the additional diagnostic power of pocket size device by both experts operators and trainees in comparison with physical examination and its appropriateness of use in comp...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-8-51
更新日期:2010-11-26 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: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:Calcification is an independent predictor of mortality in calcific aortic valve disease (CAVD). The aim of this study was to evaluate the use of non-invasive, non-ionizing echocardiographic calibrated integrated backscatter (cIB) for monitoring progression and subsequent regression of aortic valvular calcifi...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-11-4
更新日期:2013-01-26 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
abstract:INTRODUCTION:In vivo and in vitro evidence suggests that adenosine and its agonists play key roles in the process of ischemic preconditioning. The effects of low-dose adenosine infusion on ischemic preconditioning have not been thoroughly studied in humans. AIMS:We hypothesised that a low-dose adenosine infusion could...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章,随机对照试验
doi:10.1186/1476-7120-7-52
更新日期:2009-11-05 00:00:00
abstract:BACKGROUND:Atrial septal defect (ASD) accounts for 10% of all congenital heart lesions and represent the third most congenital cardiac defect seen in adults. Atrial natriuretic peptide (ANP) is an important regulator of the sodium and volume homeostasis. This study was designed to investigate the changes in plasma ANP ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-6-35
更新日期:2008-07-07 00:00:00
abstract:BACKGROUND:The developments in echocardiography or ultrasound cardiography (UCG) have improved our clinical capabilities. However, advanced hardware and software capabilities have resulted in UCG facilities of dubious clinical benefits. Is tissue Doppler echocardiography (TDE) is one such example? PRESENTATION OF THE ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-2-12
更新日期:2004-08-12 00:00:00
abstract:AIMS:We sought to determine which echocardiographic markers of left ventricular (LV) remodeling and diastolic dysfunction can contribute as incremental and independent prognostic information in addition to current clinical risk markers of ischemic LV systolic dysfunction in the Surgical Treatment for Ischemic Heart Fai...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-020-00195-1
更新日期:2020-05-28 00:00:00
abstract:OBJECTIVE:Left ventricular wall stress has been investigated in a variety of populations, but the effect of food intake has not been evaluated. We assessed whether left ventricular wall stress is affected by food intake in healthy subjects. METHODS:Twenty-three healthy subjects aged 25.6 ± 4.5 years were investigated....
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:Intracardiac echocardiography (ICE) is a useful imaging modality that is now being used more widely to assist in the percutaneous closure of atrial septal defects (ASD) and patent foramen ovales (PFO). CASE PRESENTATION:A 42 year old lady with a history of transient ischaemic attacks and migraine underwent ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/1476-7120-5-30
更新日期:2007-09-25 00:00:00
abstract:BACKGROUND:Almost all attempts to improve patient selection for cardiac resynchronization therapy (CRT) using echo-derived indices have failed so far. We sought to assess: the performance of homemade software for the automatic quantification of integral 3D regional longitudinal strain curves exploring left ventricular ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-017-0107-6
更新日期:2017-06-17 00:00:00
abstract:BACKGROUND:The association of a Classical left bundle branch block (LBBB) contraction pattern and better outcome after cardiac resynchronization therapy (CRT) has only been studied using vendor-specific software for echocardiographic speckle-tracked longitudinal strain analysis. The purpose of this study was to assess ...
journal_title:Cardiovascular ultrasound
pub_type: 杂志文章
doi:10.1186/s12947-019-0160-4
更新日期:2019-05-21 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: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