Automated myocardial edge detection from breath-hold cine-MR images: Evaluation of left ventricular volumes and mass

Baldy, Claire; Douek, Philippe; Croisille, Pierre; Magnin, Isabelle E.; Revel, D.; Amiel, M

doi:10.1016/0730-725x(94)92453-8

Cited by 67 publications

(29 citation statements)

References 19 publications

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“…These sequences are ideal to evaluate cardiac function (26). In CHD, it is important to evaluate not only left ventricular function but also right ventricular function, which overcomes a limitation of echocardiography.…”

Section: Cine-mr Imagingmentioning

confidence: 99%

Morphologic and functional evaluation of congenital heart disease by magnetic resonance imaging

Didier

Ratib

Beghetti

et al. 1999

J. Magn. Reson. Imaging

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Section: Cine-mr Imagingmentioning

confidence: 99%

Morphologic and functional evaluation of congenital heart disease by magnetic resonance imaging

Didier

Ratib

Beghetti

et al. 1999

J. Magn. Reson. Imaging

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“…MRI has also provided images of rat hearts in vivo to a resolution of < 200 ,um. The present study employed gradient echo MRI as a physiological tool in contrast to its more frequent use as a clinical tool to characterize left ventricular contraction (Baldy et al 1994). …”

Section: Discussionmentioning

confidence: 99%

“…A distributed model of the left ventricle was first assembled, to provide a basis of assessment of simpler models to follow. Such an approach has been accepted in previous descriptions of human cardiac geometry (Baldy, Douek, Croisille, Magnin, Revel & Amiel, 1994;Rehr, Malloy, Filipchuck & Peshock, 1985). This involved an independent assembly of the features of individual slices.…”

Section: Cardiac Images In Transverse Sectionmentioning

confidence: 99%

A quantitative description of dynamic left ventricular geometry in anaesthetized rats using magnetic resonance imaging

Crowley

Huang²,

Gates³

et al. 1997

Experimental Physiology

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SUMMARYWe report a functional application of magnetic resonance imaging (MRI) for the quantitative description of left ventricular geometry through systole and diastole in normal anaesthetized Wistar rats that might be applicable for the analysis of chronic changes resulting from pathological conditions. Images of cardiac anatomy were acquired through planes both parallel and perpendicular to the principal cardiac axis at times that were synchronized to the R wave of the electrocardiogram. The images of the transverse sections were assembled into three-dimensional representations of left ventricular geometry at consecutive time points through the cardiac cycle. This confirmed the geometrical coherence of the data sets, that each slice showed circular symmetry, and that the images were correctly aligned with the appropriate anatomical axes. Different models for the three-dimensional geometry of the left ventricle were then tested against the epi-and endocardial surfaces reconstructed from images of the transverse sections of the left ventricle in both systole and diastole using least-squares minimizations in three dimensions. In agreement with previous reports in the human heart, an elliptical figure of revolution offered an optimal fit to the epicardial and endocardial geometry for the rat heart in diastole. This was in preference to models that used spherical, quartic or parabolic geometries. However, in contrast to contraction in the human heart, all these geometrical representations broke down during systolic ejection in the rat heart. We therefore introduced a more general hybrid model which described left ventricular geometry in terms of the variation of the radii r(z), independently determined for each slice, with its position z along the principal cardiac axis. The resulting function r(z) could then be described by a simple ellipsoid of revolution not only during diastole, but also throughout ventricular ejection. The findings also ruled out alternative geometrical representations. It was then possible additionally to reconstruct the luminal and total left ventricular volumes, wall thicknesses and ejection fractions through the cardiac cycle and to confirm that the predicted total ventricular wall volume was conserved throughout the cardiac cycle. Our hybrid model of cardiac geometry may thus be useful for non-invasive serial studies of chronic pathological changes that use the rat as a model experimental system.

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“…Attempts to reduce post-processing time have focused on (semi) automatic contour detection of endocardial borders [22][23][24]. Until now, manual or semi-automatic contour detection is still preferred Data for both analysing methods, and the absolute difference are presented as the mean ± SDs.…”

Section: Discussionmentioning

confidence: 99%

Assessment of global left ventricular functional parameters: analysis of every second short-axis Magnetic Resonance Imaging slices is as accurate as analysis of consecutive slices

Lubbers

Willems

Vleuten

et al. 2007

Int J Cardiovasc Imaging

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The purpose of this study was to assess whether accurate global left-ventricular (LV) functional parameters can be obtained by analyzing every second short-axis magnetic resonance imaging cine series instead of consecutive slices, in order to reduce post-processing time. Forty patients, were scanned on a 1.5 T MRI-system (Magnetom Sonata, Siemens Medical Systems, Erlangen, Germany) using a steady-state free precession (SSFP) sequence. A stack of short-axis cine series from above the mitral valve through the apex was acquired. Post-processing was started at the most basal slice of the left ventricle, in which at least 50% of the circumference was myocardium. End-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV), ejection fraction (EF) and LV mass (LVM), were calculated. Data analysis was repeated, but now only every second slice was analyzed. Bland-Altman analysis showed slightly lower values for all LV parameters when only every second slice was analyzed, ranging from 1.7% difference for EF (limits of agreement -3.5 to 5.0) to 4.6% for SV (limits of agreement -7.2 to 15.0). Analysis of every second slice for quantification of global LV function is time-saving and as accurate as analysis of consecutive slices.

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Automated myocardial edge detection from breath-hold cine-MR images: Evaluation of left ventricular volumes and mass

Cited by 67 publications

References 19 publications

Morphologic and functional evaluation of congenital heart disease by magnetic resonance imaging

Morphologic and functional evaluation of congenital heart disease by magnetic resonance imaging

A quantitative description of dynamic left ventricular geometry in anaesthetized rats using magnetic resonance imaging

Assessment of global left ventricular functional parameters: analysis of every second short-axis Magnetic Resonance Imaging slices is as accurate as analysis of consecutive slices

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