Search Results for author: Vicente Grau

Found 22 papers, 6 papers with code

Personalized Topology-Informed 12-Lead ECG Electrode Localization from Incomplete Cardiac MRIs for Efficient Cardiac Digital Twins

no code implementations25 Aug 2024 Lei LI, Hannah Smith, Yilin Lyu, Julia Camps, Blanca Rodriguez, Abhirup Banerjee, Vicente Grau

However, current studies commonly rely on additional acquisition of torso imaging and manual/semi-automatic methods for ECG electrode localization.

Medical Graph RAG: Towards Safe Medical Large Language Model via Graph Retrieval-Augmented Generation

1 code implementation8 Aug 2024 Junde Wu, Jiayuan Zhu, Yunli Qi, Jingkun Chen, Min Xu, Filippo Menolascina, Vicente Grau

We introduce a novel graph-based Retrieval-Augmented Generation (RAG) framework specifically designed for the medical domain, called \textbf{MedGraphRAG}, aimed at enhancing Large Language Model (LLM) capabilities for generating evidence-based medical responses, thereby improving safety and reliability when handling private medical data.

Chunking Fact Checking +6

Deep Learning-based 3D Coronary Tree Reconstruction from Two 2D Non-simultaneous X-ray Angiography Projections

1 code implementation19 Jul 2024 Yiying Wang, Abhirup Banerjee, Robin P. Choudhury, Vicente Grau

To the best of our knowledge, this is the first study that leverages deep learning to achieve 3D coronary tree reconstruction from two real non-simultaneous x-ray angiography projections.

3D geometry Generative Adversarial Network

Solving the Inverse Problem of Electrocardiography for Cardiac Digital Twins: A Survey

1 code implementation17 Jun 2024 Lei LI, Julia Camps, Blanca Rodriguez, Vicente Grau

Cardiac digital twins (CDTs) are personalized virtual representations used to understand complex cardiac mechanisms.

Anatomy Computational Efficiency

Large Language Model-informed ECG Dual Attention Network for Heart Failure Risk Prediction

no code implementations15 Mar 2024 Chen Chen, Lei LI, Marcel Beetz, Abhirup Banerjee, Ramneek Gupta, Vicente Grau

We present a novel, lightweight dual-attention ECG network designed to capture complex ECG features essential for early HF risk prediction, despite the notable imbalance between low and high-risk groups.

Language Modelling Large Language Model

Anatomical basis of human sex differences in ECG identified by automated torso-cardiac three-dimensional reconstruction

no code implementations21 Dec 2023 Hannah J. Smith, Blanca Rodriguez, Yuling Sang, Marcel Beetz, Robin Choudhury, Vicente Grau, Abhirup Banerjee

Methods: This work presents quantification of sex differences in ECG versus anatomical biomarkers in healthy and post-MI subjects, enabled by a novel, end-to-end automated pipeline for torso-ventricular anatomical reconstruction from clinically standard cardiac magnetic resonance imaging.

3D Reconstruction Anatomy +1

Multi-objective point cloud autoencoders for explainable myocardial infarction prediction

no code implementations20 Jul 2023 Marcel Beetz, Abhirup Banerjee, Vicente Grau

In this work, we present the multi-objective point cloud autoencoder as a novel geometric deep learning approach for explainable infarction prediction, based on multi-class 3D point cloud representations of cardiac anatomy and function.

Anatomy Deep Learning

Modeling 3D cardiac contraction and relaxation with point cloud deformation networks

no code implementations20 Jul 2023 Marcel Beetz, Abhirup Banerjee, Vicente Grau

Global single-valued biomarkers of cardiac function typically used in clinical practice, such as ejection fraction, provide limited insight on the true 3D cardiac deformation process and hence, limit the understanding of both healthy and pathological cardiac mechanics.

Anatomy Decoder +1

3D Shape-Based Myocardial Infarction Prediction Using Point Cloud Classification Networks

no code implementations14 Jul 2023 Marcel Beetz, Yilong Yang, Abhirup Banerjee, Lei LI, Vicente Grau

Myocardial infarction (MI) is one of the most prevalent cardiovascular diseases with associated clinical decision-making typically based on single-valued imaging biomarkers.

Anatomy Decision Making +2

Towards Enabling Cardiac Digital Twins of Myocardial Infarction Using Deep Computational Models for Inverse Inference

no code implementations10 Jul 2023 Lei LI, Julia Camps, Zhinuo, Wang, Abhirup Banerjee, Marcel Beetz, Blanca Rodriguez, Vicente Grau

In this work, we investigate the feasibility of inferring myocardial tissue properties from the electrocardiogram (ECG) within a CDT platform.

Segment Anything Model for Medical Images?

1 code implementation28 Apr 2023 Yuhao Huang, Xin Yang, Lian Liu, Han Zhou, Ao Chang, Xinrui Zhou, Rusi Chen, Junxuan Yu, Jiongquan Chen, Chaoyu Chen, Sijing Liu, Haozhe Chi, Xindi Hu, Kejuan Yue, Lei LI, Vicente Grau, Deng-Ping Fan, Fajin Dong, Dong Ni

To fully validate SAM's performance on medical data, we collected and sorted 53 open-source datasets and built a large medical segmentation dataset with 18 modalities, 84 objects, 125 object-modality paired targets, 1050K 2D images, and 6033K masks.

Image Segmentation Medical Image Segmentation +3

Influence of Myocardial Infarction on QRS Properties: A Simulation Study

no code implementations4 Apr 2023 Lei LI, Julia Camps, Zhinuo, Wang, Abhirup Banerjee, Blanca Rodriguez, Vicente Grau

However, the influence of various MI properties on the QRS is not intuitively predictable. In this work, we have systematically investigated the effects of 17 post-MI scenarios, varying the location, size, transmural extent, and conductive level of scarring and border zone area, on the forward-calculated QRS.

Multi-Modality Cardiac Image Computing: A Survey

no code implementations26 Aug 2022 Lei LI, Wangbin Ding, Liqun Huang, Xiahai Zhuang, Vicente Grau

Multi-modality cardiac imaging plays a key role in the management of patients with cardiovascular diseases.

Management Survey

Deep Computational Model for the Inference of Ventricular Activation Properties

no code implementations8 Aug 2022 Lei LI, Julia Camps, Abhirup Banerjee, Marcel Beetz, Blanca Rodriguez, Vicente Grau

Cardiac digital twins can provide non-invasive characterizations of cardiac functions for individual patients, and therefore are promising for the patient-specific diagnosis and therapy stratification.

Anatomy

Inference of ventricular activation properties from non-invasive electrocardiography

no code implementations28 Oct 2020 Julia Camps, Brodie Lawson, Christopher Drovandi, Ana Minchole, Zhinuo Jenny Wang, Vicente Grau, Kevin Burrage, Blanca Rodriguez

We demonstrate results from our inference method on a cohort of twenty virtual subjects with cardiac volumes ranging from 74 cm3 to 171 cm3 and considering low versus high resolution for the endocardial discretisation (which determines possible locations of the earliest activation sites).

Decision Making Dynamic Time Warping

A Deep Learning Approach to Automate High-Resolution Blood Vessel Reconstruction on Computerized Tomography Images With or Without the Use of Contrast Agent

no code implementations9 Feb 2020 Anirudh Chandrashekar, Ashok Handa, Natesh Shivakumar, Pierfrancesco Lapolla, Vicente Grau, Regent Lee

Subsequent implementation of this network architecture within the aortic segmentation pipeline from both contrast-enhanced CTA and non-contrast CT images has allowed for accurate and efficient extraction of the entire aortic volume.

Computed Tomography (CT) Data Augmentation +2

Efficient 3D Fully Convolutional Networks for Pulmonary Lobe Segmentation in CT Images

1 code implementation16 Sep 2019 Hoileong Lee, Tahreema Matin, Fergus Gleeson, Vicente Grau

We refer to the network as Pulmonary Lobe Segmentation Network (PLS-Net), which is designed to efficiently exploit 3D spatial and contextual information from high-resolution volumetric CT images for effective volume-to-volume learning and inference.

Computational Efficiency Computed Tomography (CT) +1

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