Effect of Endocardial Trabeculae on Left Ventricular Measurements and Measurement Reproducibility at Cardiovascular MR Imaging

Papavassiliu, Theano; Kühl, Harald P.; Schröder, Meike; Süselbeck, Tim; Bondarenko, Olga; Böhm, Christoph; Beek, Aernout M.; Hofman, Mark M. B.; Rossum, Albert C. van

doi:10.1148/radiol.2353040601

Cited by 190 publications

(180 citation statements)

References 15 publications

(10 reference statements)

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“…Despite observations of Papavassilliu et al .,10 who concluded that the difference between these two methods resulted in a change in estimated volume and mass, there were no data in medical literature about the influence of trabecular relief in the hypothetical geometrical shape of ventricular chamber.…”

Section: Discussionmentioning

confidence: 97%

Left ventricular chamber geometry in cardiomyopathies: insights from a computerized anatomical study

et al. 2018

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AimsSome authors have hypothesized that left ventricular chamber dilatation in ischaemic and idiopathic cardiomyopathies results in spherical transformation. Aiming to characterize how this transformation occurs, a study was performed by comparing normal and dilated specimens regarding sphericity and proportionality in left heart chambers. It is important to provide data for the development of therapeutic strategies in these diseases.Methods and resultsAn anatomical study was performed by comparing normal (n = 10), ischaemic (n = 15), and idiopathic (n = 18) dilated human cardiomyopathic specimens regarding left ventricular chambers and their segmental proportionality to normal hearts. It was performed by capturing and processing images with proper software in three different levels of left ventricular chamber (basal, equatorial, and apical). These obtained data were analysed based on sphericity and proportionality by two dedicated indexes. Spherical shape: Calculated segmental indexes showed that dilated specimens were not spherical because they were smaller than as expected for a spherical shape (all values were <70% of a perfect sphere). Proportionality: There was no difference between basal index perimeters among groups, but apical index was lower in dilated specimens than in normal hearts, and so dilatation was not proportional to normal hearts.ConclusionsLeft ventricular chambers of anatomical specimens with dilated cardiomyopathies did not display a spherical shape and were not proportional to normal hearts.

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Section: Discussionmentioning

confidence: 97%

Left ventricular chamber geometry in cardiomyopathies: insights from a computerized anatomical study

et al. 2018

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“…It appears that in end-systole, intertrabecular space may not be completely obliterated, as is supported by both contrast echocardiography and MRI studies. 19,26 In one contrast echocardiography study, LV end-diastolic volume showed a larger increase than LV end-systolic volume, with a resulting increase in ejection fraction. 17 In this study, however, the amount of ultrasound contrast material that was injected was very small, which might have aggravated the effects of ultrasound contrast destruction.…”

Section: Discussionmentioning

confidence: 99%

Contrast-enhanced versus non-enhanced three-dimensional echocardiography of left ventricular volumes

Heide

Mannaerts²,

Yang³

et al. 2008

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Contrast-enhanced versus non-enhanced three-dimensional echocardiography of left ventricular volumesBackground. In three-dimensional echocardiography (3DE), individual endocardial trabeculae are not clearly visible necessitating left ventricular (LV) volumes to be measured by tracing the innermost endocardial contour. Ultrasound contrast agents aim to improve endocardial definition, but may delineate the outermost endocardial contour by filling up intertrabecular space. Although measurement reproducibility may benefit, there may be a significant influence on absolute LV volume measurements. Methods. Twenty patients with a recent myocardial infarction and good ultrasound image quality underwent 3DE using the TomTec Freehand method before and during continuous intravenous contrast infusion. LV volumes were measured offline using TomTec Echo-Scan software. Results. The use of contrast enhancement increased end-diastolic (110±35 vs. 144±53 ml; p<0.01) and end-systolic volume measurements (68±31 vs. 87±45 ml; p<0.01) significantly compared with non-contrast; the ejection fraction remained unchanged (40±13 vs. 41±14%, p=NS). Measurement reproducibility did not improve significantly, however. Conclusion. Volumes measured by 3DE are significantly larger when ultrasound contrast is used. Possibly, intertrabecular space comprises a substantial part of the LV cavity. In the presence of an adequate apical acoustic window, ultrasound contrast does not improve LV volume measurement reproducibility. (Neth Heart J 2008;16:47-52.)

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“…Papillary muscles and trabeculations were excluded from the calculated LV mass. 12 The density of myocardial tissue was set at 1.05 g/mL. Of note, LV masses analyzed by the steady state free precision method tend to be Ϸ15% lower than masses recorded by the turbo gradient echo method.…”

Section: Cardiac Magnetic Resonance Imagingmentioning

confidence: 99%

The Heart in Friedreich Ataxia

et al. 2012

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Effect of Endocardial Trabeculae on Left Ventricular Measurements and Measurement Reproducibility at Cardiovascular MR Imaging

Abstract: Trabeculae significantly affect quantifications of LV volume and mass. The superior reproducibility of LV measurements with the inclusion of endocardial trabeculae in the cavity volume favors this tracing algorithm for clinical use.

Cited by 190 publications

References 15 publications

Left ventricular chamber geometry in cardiomyopathies: insights from a computerized anatomical study

Left ventricular chamber geometry in cardiomyopathies: insights from a computerized anatomical study

Contrast-enhanced versus non-enhanced three-dimensional echocardiography of left ventricular volumes

The Heart in Friedreich Ataxia

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