Correlation of Exercise Response in Repaired Coarctation of the Aorta to Left Ventricular Mass and Geometry

Krieger, Eric V.; Clair, Mathieu; Opotowsky, Alexander R.; Landzberg, Michael J.; Rhodes, Jonathan; Powell, A.; Colan, Steven D.; Valente, Anne Marie

doi:10.1016/j.amjcard.2012.09.037

Cited by 27 publications

(7 citation statements)

References 29 publications

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“…Second, intraobserver and interobserver variability of the segmentation method was not evaluated, because the high reproducibility of a threshold-based segmentation method has already been thoroughly evaluated (347813). Moreover, lower interobserver and intraobserver variability in CT ventricular volumetry (3.5–7.3% and 3.4–7.6%, respectively) than in MRI ventricular volumetry (5.3–11.0% and 6.2–10.6%, respectively) was reported in a previous study (28). Furthermore, CT showed the lowest interobserver and intraobserver variability of volumetric analysis in a comparative study among cardiac CT, cardiac MRI, and 3D echocardiography by using right-ventricle-shaped phantoms (11).…”

Section: Discussionmentioning

confidence: 46%

“…In fact, a partial voxel interpolation technique using an in-house software was reported to reduce this adverse effect in 2D short-axis cine MRI (327). Such an algorithm may also provide the ventricular myocardial mass and ventricular mass-volume ratio because accurate ventricular volume and myocardial mass can be simultaneously obtained (2829). A different approach in determining the threshold, e.g., simply the half value between the two peaks, may be used by others.…”

Section: Discussionmentioning

confidence: 99%

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Semiautomatic Three-Dimensional Threshold-Based Cardiac Computed Tomography Ventricular Volumetry in Repaired Tetralogy of Fallot: Comparison with Cardiac Magnetic Resonance Imaging

Goo

2019

Korean J Radiol

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ObjectiveTo assess the accuracy and potential bias of computed tomography (CT) ventricular volumetry using semiautomatic three-dimensional (3D) threshold-based segmentation in repaired tetralogy of Fallot, and to compare them to those of two-dimensional (2D) magnetic resonance imaging (MRI).Materials and MethodsThis retrospective study evaluated 32 patients with repaired tetralogy of Fallot who had undergone both cardiac CT and MRI within 3 years. For ventricular volumetry, semiautomatic 3D threshold-based segmentation was used in CT, while a manual simplified contouring 2D method was used in MRI. The indexed ventricular volumes were compared between CT and MRI. The indexed ventricular stroke volumes were compared with the indexed arterial stroke volumes measured using phase-contrast MRI. The mean differences and degrees of agreement in the indexed ventricular and stroke volumes were evaluated using Bland-Altman analysis.ResultsThe indexed end-systolic (ES) volumes showed no significant difference between CT and MRI (p > 0.05), while the indexed end-diastolic (ED) volumes were significantly larger on CT than on MRI (93.6 ± 17.5 mL/m2 vs. 87.3 ± 15.5 mL/m2 for the left ventricle [p < 0.001] and 177.2 ± 39.5 mL/m2 vs. 161.7 ± 33.1 mL/m2 for the right ventricle [p < 0.001], respectively). The mean differences between CT and MRI were smaller for the indexed ES volumes (2.0–2.5 mL/m2) than for the indexed ED volumes (6.3–15.5 mL/m2). CT overestimated the stroke volumes by 14–16%. With phase-contrast MRI as a reference, CT (7.2–14.3 mL/m2) showed greater mean differences in the indexed stroke volumes than did MRI (0.8–3.3 mL/m2; p < 0.005).ConclusionCompared to 2D MRI, CT ventricular volumetry using semiautomatic 3D threshold-based segmentation provides comparable ES volumes, but overestimates the ED and stroke volumes in patients with repaired tetralogy of Fallot.

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Section: Discussionmentioning

confidence: 46%

Section: Discussionmentioning

confidence: 99%

Semiautomatic Three-Dimensional Threshold-Based Cardiac Computed Tomography Ventricular Volumetry in Repaired Tetralogy of Fallot: Comparison with Cardiac Magnetic Resonance Imaging

Goo

2019

Korean J Radiol

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“…However, this technique is not currently available in commercially available workstations. The partial voxel interpolation may be particularly beneficial for ventricular myocardial mass quantification because ventricular mass or ventricular mass-to-volume ratio has been found to be valuable in identifying or predicting adverse remodeling and outcome ( 27 28 ).…”

Section: Discussionmentioning

confidence: 99%

Comparison between Three-Dimensional Navigator-Gated Whole-Heart MRI and Two-Dimensional Cine MRI in Quantifying Ventricular Volumes

Goo

2018

Korean J Radiol

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ObjectiveTo test whether the method utilizing three-dimensional (3D) whole-heart MRI has an additional benefit over that utilizing conventional two-dimensional (2D) cine MRI in quantifying ventricular volumes.Materials and MethodsIn 110 patients with congenital heart disease, a navigator-gated, 3D whole-heart MRI during end-systole (ES) and end-diastole (ED), 2D short-axis cine MRI, and phase contrast MRI of the great arteries were acquired. Ventricular volumes were measured by using a 3D threshold-based segmentation for 3D whole-heart MRI and by using a simplified contouring for 2D cine MRI. The cardiac trigger delays of 3D whole-heart MRI were compared with those of a 2D cine MRI. The stroke volumes calculated from the ventricular volumes were compared with the arterial flow volumes, measured by phase contrast MRI.ResultsThe ES and ED trigger delays of whole-heart MRI were significantly less than cine MRI for both the left ventricle (−16.8 ± 35.9 ms for ES, −59.0 ± 90.4 ms for ED; p < 0.001) and the right ventricle (−58.8 ± 30.6 ms for ES, −104.9 ± 92.7 ms for ED; p < 0.001). Compared with the arterial flow volumes, 2D cine MRI significantly overestimated the left ventricular stroke volumes (8.7 ± 8.9 mL, p < 0.001) and the 3D whole-heart MRI significantly underestimated the right ventricular stroke volumes (−22.7 ± 22.9 mL, p < 0.001).ConclusionThree-dimensional whole-heart MRI is often subject to early timing of the ED phase, potentially leading to the underestimation of the right ventricular stroke volumes.

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“…The examination may be remarkable for a murmur and systemic hypertension, even in the absence of residual obstruction, given the predisposition these patients have to develop systemic hypertension, especially if diagnosed later in childhood or adolescence. [28][29][30] The degree of residual coarctation can be estimated by blood pressure measurement in the upper extremity combined with a blood pressure measurement in the lower extremity (thigh cuff).…”

Section: Coarctation Of the Aortamentioning

confidence: 99%

The Management of Athletes with Congenital Heart Disease

Molossi

Grenier

2015

Clinics in Sports Medicine

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Correlation of Exercise Response in Repaired Coarctation of the Aorta to Left Ventricular Mass and Geometry

Cited by 27 publications

References 29 publications

Semiautomatic Three-Dimensional Threshold-Based Cardiac Computed Tomography Ventricular Volumetry in Repaired Tetralogy of Fallot: Comparison with Cardiac Magnetic Resonance Imaging

Semiautomatic Three-Dimensional Threshold-Based Cardiac Computed Tomography Ventricular Volumetry in Repaired Tetralogy of Fallot: Comparison with Cardiac Magnetic Resonance Imaging

Comparison between Three-Dimensional Navigator-Gated Whole-Heart MRI and Two-Dimensional Cine MRI in Quantifying Ventricular Volumes

The Management of Athletes with Congenital Heart Disease

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