Reproducibility of Echocardiography

Pietro, Daniel A.; Voelkel, A. Gene; Ray, Barbara J.; Parisi, Alfred F.

doi:10.1378/chest.79.1.29

Cited by 73 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Factors affecting day-to-day variation of the measurements may include heart rate [35], technique repeatability and image quality. Although excellent reliability of measurements was obtained in the current study, small differences in measurement may have contributed to the day-to-day variation, particularly as measurements of small structures have been shown to be less repeatable in previous studies [36,37] and RV dimensions are very image orientation dependent [25]. It is unlikely that image quality played a major role since the most of the images were of good to excellent quality and were the only ones evaluated.…”

Section: Discussionmentioning

confidence: 57%

Reliability of quantitative echocardiography in adult sheep and goats

Hallowell

Potter²,

Bowen

2012

BMC Vet Res

View full text Add to dashboard Cite

BackgroundEchocardiography is a non-invasive method for assessment of the ovine and caprine heart. Complete reference ranges for cardiac dimensions and time indices for both species are not currently available and reliability of these measurements has not been evaluated. The objectives for this study are to report reliability, normal cardiac dimensions and time indices in a large group of adult sheep and goats.Fifty-one adult sheep and forty adult goats were recruited. Full echocardiographic examinations were performed in the standing unsedated animal. All animals underwent echocardiography four times in a 72-hour period. Echocardiography was performed three times by one author and once by another. Images were stored and measured offline. Technique and measurement repeatability and reproducibility and any differences due to animal or day were evaluated. Reference ranges (mean ± 2 standard deviations) were calculated for both species.ResultsMajority of the images obtained were of good to excellent quality. Image acquisition was straightforward with 5.4% of animals demonstrating a small scanning window. Reliability was excellent for majority of dimensions and time indices. There was less variation in repeatability when compared with reproducibility and differences were greater for technique than for measurements. Dimensions that were less reliable included those for right ventricular diameter and left ventricular free wall. There were many differences in cardiac dimensions between sheep and goats.ConclusionsThis study has demonstrated that specific reference ranges are required for these two species. Repeatability and reproducibility were excellent for the majority of cardiac dimensions and time indices suggesting that this technique is reliable and valuable for examination of clinical cases over time and for longitudinal research studies.

show abstract

Section: Discussionmentioning

confidence: 57%

Reliability of quantitative echocardiography in adult sheep and goats

Hallowell

Potter²,

Bowen

2012

BMC Vet Res

View full text Add to dashboard Cite

show abstract

“…In one study, aortas with an initial diameter of 35 mm to 40 mm had an expansion rate of 2.1 mm/year, whereas aortic aneurysms of 6 cm or larger had expansion rates of 5.6 mm/year [107]. Some individuals in the aforementioned studies showed either no growth or a decrease in aortic diameter with time, exemplifying that estimation of aortic dilatation is difficult due to variability in image readings [109], short follow-up periods, small sample sizes, and selection bias [72]. Acute aortic dissection should be suspected when the thoracic aorta enlarges rapidly in a short period of time [110].…”

Section: Aneurysm Growthmentioning

confidence: 99%

Bicuspid Aortic Valve Disease and Ascending Aortic Aneurysms: Gaps in Knowledge

Losenno

Goodman

Chu

2012

Cardiology Research and Practice

View full text Add to dashboard Cite

The bicuspid aortic valve is the most common congenital cardiac anomaly in developed nations. The abnormal bicuspid morphology of the aortic valve results in valvular dysfunction and subsequent hemodynamic derangements. However, the clinical presentation of bicuspid aortic valve disease remains quite heterogeneous with patients presenting from infancy to late adulthood with variable degrees of valvular stenosis and insufficiency and associated abnormalities including aortic coarctation, hypoplastic left heart structures, and ascending aortic dilatation. Emerging evidence suggests that the heterogeneous presentation of bicuspid aortic valve phenotypes may be a more complex matter related to congenital, genetic, and/or connective tissue abnormalities. Optimal management of patients with BAV disease and associated ascending aortic aneurysms often requires a thoughtful approach, carefully assessing various risk factors of the aortic valve and the aorta and discerning individual indications for ongoing surveillance, medical management, and operative intervention. We review current concepts of anatomic classification, pathophysiology, natural history, and clinical management of bicuspid aortic valve disease with associated ascending aortic aneurysms.

show abstract

“…Intra-and inter-observer variability of echocardiographically determined ventricular volume measurements were reported before in normal individuals and in patients [15][16][17]. However, these studies were performed by visual assessment of images recorded on videotape and later digitized.…”

Section: Introductionmentioning

confidence: 96%

Reproducibility of left ventricular size, shape and mass with echocardiography, magnetic resonance imaging and radionuclide angiography in patients with anterior wall infarction

et al. 1996

View full text Add to dashboard Cite

After myocardial infarction, left ventricular volume and ejection fraction can be assessed by echocardiography, magnetic resonance imaging and radionuclide angiography to guide therapy and determine prognosis. Whether a measured parameter gives the same results irrespective of the method used and the observer who performs the analysis is only partly known. Intra-observer and inter-observer variability were determined for echo and magnetic resonance imaging. Left ventricular ejection fraction measured by these techniques was related to radionuclide angiograms performed in the same period. Intra-observer variability for both echo and MRI was low and in most instances below 5%. Inter-observer variability for the echo and MRI measurements were substantially higher than intra-observer variability. Comparison of the three imaging modalities revealed systematic differences. Therefore, in clinical studies, left ventricular volume and function parameters have to be measured with the same technique and by the same observer in qualified core laboratories.

show abstract

Reproducibility of Echocardiography

Cited by 73 publications

References 4 publications

Reliability of quantitative echocardiography in adult sheep and goats

Reliability of quantitative echocardiography in adult sheep and goats

Bicuspid Aortic Valve Disease and Ascending Aortic Aneurysms: Gaps in Knowledge

Reproducibility of left ventricular size, shape and mass with echocardiography, magnetic resonance imaging and radionuclide angiography in patients with anterior wall infarction

Contact Info

Product

Resources

About