13 Result(s)
within
Debbie Zhao
English
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Article
Open AccessEvaluation of left ventricular filling pressure by echocardiography in patients with atrial fibrillation
Echocardiography is widely used to evaluate left ventricular (LV) diastolic function in patients suspected of heart failure. For patients in sinus rhythm, a combination of several echocardiographic parameters ...
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Chapter and Conference Paper
Automated Quality-Controlled Left Heart Segmentation from 2D Echocardiography
Segmentation of 2D echocardiography (2DE) images is an important prerequisite for quantifying cardiac function. Although deep learning can automate analysis, variability in image quality and limitations in mod...
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Chapter and Conference Paper
Automated Segmentation of the Right Ventricle from 3D Echocardiography Using Labels from Cardiac Magnetic Resonance Imaging
Segmentation of the right ventricle (RV) from 3D echocardiography (3DE) is a challenging task. In comparison to the left ventricle (LV), the complex geometry of the RV hinders accurate and reproducible volume ...
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Chapter and Conference Paper
Impact of Hypertension on Left Ventricular Pressure-Strain Loop Characteristics and Myocardial Work
Hypertension is a major risk factor for cardiovascular disease. Pressure-strain loop analysis has recently been introduced as a clinical tool to quantify the pum** efficiency of the left ventricle (LV), as a...
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Article
Open AccessPublisher Correction: Correcting bias in cardiac geometries derived from multimodal images using spatiotemporal map**
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Article
Open AccessCorrecting bias in cardiac geometries derived from multimodal images using spatiotemporal map**
Cardiovascular imaging studies provide a multitude of structural and functional data to better understand disease mechanisms. While pooling data across studies enables more powerful and broader applications, p...
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Chapter and Conference Paper
DIFF \(\cdot \) 3: A Latent Diffusion Model for the Generation of Synthetic 3D Echocardiographic Images and Corresponding Labels
Large amounts of labelled data are typically needed to develop robust deep learning methods for medical image analysis. However, issues related to the high costs of acquisition, time-consuming analysis, and pa...
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Chapter and Conference Paper
Automated Estimation of Left Ventricular Diastolic Chamber Stiffness: Application to Patients with Heart Failure and Aortic Regurgitation
Diastolic dysfunction of the heart is present in most forms of cardiac failure. Left ventricular (LV) diastolic chamber stiffness has been proposed as a metric for obtaining insights into the progression of th...
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Chapter and Conference Paper
Left Ventricular Work and Power are Constant Despite Varying Cardiac Cycle Length—Implications for Patients with Atrial Fibrillation
Atrial fibrillation (AF) is associated with stroke and heart failure, and poses a significant global health burden. Consequently, efforts remain ongoing in better characterising and understanding AF and its un...
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Chapter and Conference Paper
Measuring Three-Dimensional Surface Deformations of Skin Using a Stereoscopic System and Intrinsic Features
Measurement of three-dimensional (3D) surface deformations is an important step in characterising mechanical properties and develo** computational models . Compared to two-dimensional , the ability to acqu...
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Chapter and Conference Paper
Sensitivity of Myocardial Stiffness Estimates to Inter-observer Variability in LV Geometric Modelling
Heart failure is known to be associated with substantial changes in the mechanical properties of the heart muscle. Biomechanical parameters, such as myocardial stiffness, have the potential to help clinicians ...
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Chapter and Conference Paper
In Vivo Pressure-Volume Loops and Chamber Stiffness Estimation Using Real-Time 3D Echocardiography and Left Ventricular Catheterization – Application to Post-heart Transplant Patients
In vivo pressure-volume loops (PVLs) are the gold standard measurement to assess ventricular function. We developed a pipeline to integrate hemodynamic measurements with real-time three-dimensional (3D) echocardi...
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Chapter and Conference Paper
Comparison of 2D Echocardiography and Cardiac Cine MRI in the Assessment of Regional Left Ventricular Wall Thickness
The generation of kinematic models of the heart using 3D echocardiography (echo) can be difficult due to poor image contrast and signal dropout, particularly at the epicardial surface. 2D echo images generally...
