Interstudy reproducibility of biplane cine nuclear magnetic resonance measurements of left ventricular function

Benjelloun, H.; Cranney, G.; Kirk, Katharine A.; Blackwell, Gerald G.; Lotan, Chaim; Pohost, Gerald M.

doi:10.1016/0002-9149(91)90473-x

Cited by 79 publications

(23 citation statements)

References 32 publications

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“…Magnetic resonance imaging has a high degree of accuracy and reproducibility in the visualization of LV and right ventricular (RV) morphology and function (15) and is fast becoming the gold standard for in vivo identification of the phenotype of cardiomyopathies (1). Dilated cardiomyopathy.…”

Section: Assessment Of Different Cardiomyopathiesmentioning

confidence: 99%

Cardiovascular magnetic resonance imaging: Current and emerging applications

Lima

Desai

2004

Journal of the American College of Cardiology

165

100

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Magnetic resonance (MR) imaging is gaining importance in cardiology as the newest, most complex, and rapidly emerging noninvasive test of choice for patients with a multitude of cardiovascular problems. It has long been recognized to provide an accurate and reliable means of assessing the function and anatomy of the heart and great vessels, but its emerging role as one of the dominant imaging modalities in other aspects of cardiology such as perfusion imaging, atherosclerosis imaging, and coronary artery imaging cannot be understated. As MR technology evolves, newer therapeutic applications are also being developed, including specific MR-compatible catheters for electrophysiology studies/ablation as well as interventional cardiology related procedures, which may alter the way we practice cardiology in the future. Also, MR is entering an important phase in its evolution, with an anticipated exponential growth in its current applications and through the development of newer molecular imaging applications. It is anticipated that such developments will be coupled to the utilization of molecular markers to index biologic processes to allow for their in vivo visualization. This combination of biochemical markers and imaging methodology will also usher in an era of molecular imaging during which much progress in the diagnosis and treatment of cardiovascular disease is anticipated.

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Section: Assessment Of Different Cardiomyopathiesmentioning

confidence: 99%

Cardiovascular magnetic resonance imaging: Current and emerging applications

Lima

Desai

2004

Journal of the American College of Cardiology

165

100

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“…5 Nuclear imaging and magnetic resonance imaging provide relatively reliable information and with acceptable intra-and interobserver variability. 6,7 However, the use of these imaging modalities is limited by radiation exposure during nuclear imaging, high costs and non-availability in the coronary care unit and catheterization laboratory. Echocardiography is currently the most frequently used imaging modality for the assessment of LV-EF.…”

Section: Introductionmentioning

confidence: 99%

Assessment of left ventricular ejection fraction after myocardial infarction using contrast echocardiography

Galema¹,

Geleijnse²,

Yap³

et al. 2007

European Journal of Echocardiography

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Aims Despite its relatively high intra-and inter-observer variability for left ventricular ejection fraction (LV-EF) echocardiography is clinically still the most used modality to assess LV-EF. We studied whether adding a second-generation microbubble contrast agent could decrease this variability. Methods and results Forty-eight patients underwent transthoracic echocardiography in secondharmonic mode (SHI) with and without contrast within 5 days after an acute myocardial infarction. LV-EF was determined using the Simpson's biplane method. With contrast intra-observer variability decreased from 12.5 + 11.5% to 7.0 + 7.0% (P , 0.001) and inter-observer variability decreased from 16.9 + 9.9% to 7.0 + 6.2% (P , 0.001). Bland-Altman analysis confirmed these findings by demonstrating smaller 95% limits of agreement for both the intra-and inter-observer variability when contrast was used. This improvement in intra-and inter-observer variability was seen to a comparable extent in patients with moderate-to-poor and good quality SHI echocardiograms. Conclusion Echo contrast significantly improves intra-and inter-observer variability for LV-EF, both in patients with moderate-to-poor and good quality SHI echocardiograms.

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“…The work horse of CMR has traditionally been cine imaging, with gradient echo based imaging sequences being prominent, because they produce bright blood images with reasonable contrast between blood and myocardium [15]. The most potent mechanism for generation of myocardial/blood contrast in gradient echo images is the flow refreshment phenomenon [16].…”

Section: Technical Innovationmentioning

confidence: 99%

Future prospects in cardiac magnetic resonance imaging

Doyle

Biederman²

2003

Curr Cardiol Rep

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To appreciate the impact that key developments will have on the future of cardiovascular magnetic resonance (CMR) imaging, it is instructive to consider its present status. CMR has passed the threshold of being used primarily by innovators, and is now in the early adopter stage. To reach this threshold has taken many years, but its adoption by early majority users is expected to accelerate the growth of CMR. A number of factors govern its natural growth potential, including physician education and credentialing, scanner availability, technology, and reimbursement policies. The intrinsic dimensional accuracy of CMR, coupled with its high level of reproducibility, make it ideal for inclusion in trials, potentially with dramatic reductions in trial duration and the number of subjects required. Clinically, there are a number of applications for which CMR is widely regarded as being the diagnostic test of choice. Software and hardware developments that speed up the basic CMR procedure are being incorporated into scanners, extending the functionality of routine applications such as flow imaging and tag visualization. Exciting areas that are close to routine application include coronary artery imaging, and evaluation of myocardial perfusion and viability status.

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Interstudy reproducibility of biplane cine nuclear magnetic resonance measurements of left ventricular function

Cited by 79 publications

References 32 publications

Cardiovascular magnetic resonance imaging: Current and emerging applications

Cardiovascular magnetic resonance imaging: Current and emerging applications

Assessment of left ventricular ejection fraction after myocardial infarction using contrast echocardiography

Future prospects in cardiac magnetic resonance imaging

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