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Article
Open AccessThe role of the pulmonary veins on left atrial flow patterns and thrombus formation
Atrial fibrillation (AF) is the most common human arrhythmia, forming thrombi mostly in the left atrial appendage (LAA). However, the relation between LAA morphology, blood patterns and clot formation is not y...
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Article
Open AccessDelineation of the electrocardiogram with a mixed-quality-annotations dataset using convolutional neural networks
Detection and delineation are key steps for retrieving and structuring information of the electrocardiogram (ECG), being thus crucial for numerous tasks in clinical practice. Digital signal processing (DSP) al...
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Article
Open AccessThe reproducibility of late gadolinium enhancement cardiovascular magnetic resonance imaging of post-ablation atrial scar: a cross-over study
Cardiovascular magnetic resonance (CMR) imaging has been used to visualise post-ablation atrial scar (PAAS), generally employing a three-dimensional (3D) late gadolinium enhancement (LGE) technique. However th...
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Article
Open AccessStandardized unfold map**: a technique to permit left atrial regional data display and analysis
Left atrial arrhythmia substrate assessment can involve multiple imaging and electrical modalities, but visual analysis of data on 3D surfaces is time-consuming and suffers from limited reproducibility. Unfold...
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Article
Open AccessStandardised unfold map of the left atrium: regional definition for multimodal image analysis
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Chapter and Conference Paper
Temporal Diffeomorphic Free-Form Deformation for Strain Quantification in 3D-US Images
This paper presents a new diffeomorphic temporal registration algorithm and its application to motion and strain quantification from a temporal sequence of 3D images. The displacement field is computed by forw...
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Chapter and Conference Paper
Towards Regional Elastography of Intracranial Aneurysms
Weak spots in the aneurysm could be identified estimating the regional stiffness of the wall. Our approach consists in defining a parametric biomechanical model of the vessel which, given the patient’s vascula...
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Chapter and Conference Paper
Methods for Inverting Dense Displacement Fields: Evaluation in Brain Image Registration
In medical image analysis there is frequently a need to invert dense displacement fields which map one image space to another. In this paper we describe inversion techniques and determine their accuracy in the...
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Chapter and Conference Paper
Accuracy Assessment of Global and Local Atrophy Measurement Techniques with Realistic Simulated Longitudinal Data
The main goal of this work was to assess the accuracy of several well-known methods which provide global (BSI and SIENA) or local (Jacobian integration) estimates of longitudinal atrophy in brain structures us...
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Chapter and Conference Paper
Generalised Overlap Measures for Assessment of Pairwise and Groupwise Image Registration and Segmentation
Effective validation techniques are an essential pre-requisite for segmentation and non-rigid registration techniques to enter clinical use. These algorithms can be evaluated by calculating the overlap of corr...
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Chapter and Conference Paper
CT and PET Registration Using Deformations Incorporating Tumor-Based Constraints
Registration of CT and PET thoracic images has to cope with deformations of the lungs during breathing. Possible tumors in the lungs usually do not follow the same deformations, and this should be taken into a...
