HeartVolMesh: Cardiac Volumetric Mesh Reconstruction via Covariance-Guided Graph Deformation
Centre for Computational Imaging and Modelling in Medicine (CIMIM), University of Manchester（曼彻斯特大学医学计算成像与建模中心（CIMIM））；Christabel Pankhurst Institute, University of Manchester（曼彻斯特大学克里斯塔贝尔·潘克赫斯特研究所）；Department of Computer Science, University of Manchester（曼彻斯特大学计算机科学系）；Division of Informatics, Imaging & Data Sciences, University of Manchester（曼彻斯特大学信息学、成像与数据科学部）；NIHR Manchester Biomedical Research Centre, Manchester Academic Health Sciences Centre, University of Manchester（曼彻斯特大学NIHR曼彻斯特生物医学研究中心，曼彻斯特学术健康科学中心）
Accurate patient-specific tetrahedral cardiac meshes are essential for in-silico trials, yet common segmentation-then-modelling pipelines can blur thin-wall anatomy and offer limited cross-case correspondence. We propose HeartVolMesh, which lifts each template vertex to an anisotropic Gaussian kernel and uses a 3D CNN-GNN to predict per-vertex displacements and Cholesky-parameterized covariances from volumetric images. Training is guided by a covariance-aware negative log-likelihood loss with lightweight mesh regularization. For volumetric meshing, we warp a fixed tetrahedral template to the reconstructed surface via staged alignment, non-rigid registration, and deformation propagation, preserving connectivity and correspondence by construction, with resolution controlled by template density. Experiments show consistent gains over deformation-based baselines in surface mesh accuracy and volumetric mesh fidelity.
NVIDIA（英伟达）；MGH and BWH Center for Clinical Data Science（麻省总医院与布列根和妇女医院临床数据科学中心）
We propose a 4D convolutional neural network (CNN) for the segmentation of retrospective ECG-gated cardiac CT, a series of single-channel volumetric data over time. While only a small subset of volumes in the temporal sequence is annotated, we define a sparse loss function on available labels to allow the network to leverage unlabeled images during training and generate a fully segmented sequence. We investigate the accuracy of the proposed 4D network to predict temporally consistent segmentations and compare with traditional 3D segmentation approaches. We demonstrate the feasibility of the 4D…
The Chinese University of Hong Kong（香港中文大学）；Chang Gung University（长庚大学）；The Hong Kong Polytechnic University（香港理工大学）；Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences（中国科学院深圳先进技术研究院）
Automatic and accurate whole-heart and great vessel segmentation from 3D cardiac magnetic resonance (MR) images plays an important role in the computer-assisted diagnosis and treatment of cardiovascular disease. However, this task is very challenging due to ambiguous cardiac borders and large anatomical variations among different subjects. In this paper, we propose a novel densely-connected volumetric convolutional neural network, referred as DenseVoxNet, to automatically segment the cardiac and vascular structures from 3D cardiac MR images. The DenseVoxNet adopts the 3D fully convolutional ar…
Department of Bioengineering, Imperial College London（帝国理工学院生物工程系）；Cardiovascular Magnetic Resonance Unit, Royal Brompton Hospital（皇家布里托尼医院心血管磁共振单位）；National Heart and Lung Institute, Imperial College London（帝国理工学院国家心脏和肺研究所）
University of Alberta（阿尔伯塔大学）；Mazankowski Alberta Heart Institute（马赞科夫斯基阿尔伯塔心脏研究所）
Purpose: Echocardiography is commonly used as a non-invasive imaging tool in clinical practice for the assessment of cardiac function. However, delineation of the left ventricle is challenging due to the inherent properties of ultrasound imaging, such as the presence of speckle noise and the low signal-to-noise ratio. Methods: We propose a semi-automated segmentation algorithm for the delineation of the left ventricle in temporal 3D echocardiography sequences. The method requires minimal user interaction and relies on a diffeomorphic registration approach. Advantages of the method include no d…
SAGCNet: Spatial-Aware Graph Completion Network for Missing Slice Imputation in Population CMR Imaging
School of Engineering, College of Engineering and Physical Sciences（工程学院，工程与物理科学学院）；University of Birmingham（伯明翰大学）；Oxford Center for Clinical Magnetic Resonance Research (OCMR)（牛津临床磁共振研究中心）；University of Oxford（牛津大学）；John Radcliffe Hospital（约翰·拉德克利夫医院）；Johns Hopkins University School of Medicine（约翰霍普金斯大学医学院）；Queen Mary University London（伦敦女王大学）；Barts Health NHS Trust（巴特勒医院 NHS 信托）
Latent Interpolation Learning Using Diffusion Models for Cardiac Volume Reconstruction
School of Computation, Information and Technology, Technical University Munich（技术大学慕尼黑计算信息学院）；Munich Center for Machine Learning（慕尼黑机器学习中心）；Department of Quantitative Biomedicine, University of Zurich（苏黎世大学定量生物医学系）；Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford（牛津大学生物医学工程研究所）；Imperial College London（伦敦帝国学院）；University of Sheffield（谢菲尔德大学）；NVIDIA（英伟达）；Department of Computing, Imperial College London（伦敦帝国学院计算机系）；Department AIBE of Friedrich-Alexander-Universität Erlangen-Nürnberg（埃尔兰根-纽伦堡大学AIBE系）；School of Medicine, Klinikum Rechts der Isar, Technical University of Munich（慕尼黑技术大学医学院，莱纳特医院）
A Plug-and-Play Framework for Volumetric Light-Sheet Image Reconstruction
Department of Mathematics（数学系）；The University of North Carolina at Chapel Hill（北卡罗来纳大学教堂山分校）；Department of Bioengineering（生物工程系）；The University of Texas at Dallas（德克萨斯大学达拉斯分校）
Universitat Pompeu Fabra（庞培法布拉大学）；Normandie Univ（诺曼底大学）；UNICAEN（卡昂大学）；CHU de Caen Normandie（卡昂诺曼底大学医院）；Inserm Comete（法国国家健康与医学研究院Comete实验室）；GIP Cyceron（Cyceron集团利益公共机构）；Philips Research（飞利浦研究院）；ICREA（加泰罗尼亚高等研究院）；IDIBAPS（巴塞罗那生物医学研究所）；KULeuven（鲁汶大学）
3D echocardiography is an increasingly popular tool for assessing cardiac remodelling in the right ventricle (RV). It allows quantification of the cardiac chambers without any geometric assumptions, which is the main weakness of 2D echocardiography. However, regional quantification of geometry and function is limited by the lower spatial and temporal resolution and the scarcity of identifiable anatomical landmarks. We developed a technique for regionally assessing the 3 relevant RV regions: apical, inlet and outflow. The method's inputs are end-diastolic (ED) and end-systolic (ES) segmented 3D…
Relational Anatomical Supervision for Accurate 3D Multi-Chamber Cardiac Mesh Reconstruction
Bioengineering Department Imperial College London, London W12 7SL, United Kingdom；Lung Institute, Imperial College London, London, United Kingdom；Cardiovascular Research Centre, Royal Brompton Hospital, London SW3 6NP, United Kingdom；School of Biomedical Engineering \& Imaging Sciences, King's College London, London WC2R 2LS, United Kingdom；ROAS Thrust, Hong Kong University of Science；Department of Electronic；Computer Engineering, Hong Kong University of Science
Multi-view Hybrid Graph Convolutional Network for Volume-to-mesh Reconstruction in Cardiovascular MRI
Institute for Signals, Systems, and Computational Intelligence, sinc(i) CONICET-UNL（信号、系统与计算智能研究所，sinc(i) CONICET-UNL）；Centre for Computational Imaging and Simulation Technologies in Biomedicine (CISTIB), School of Computing, University of Leeds（生物医学计算成像与模拟技术中心（CISTIB），计算学院，莱斯特大学）；Christabel Pankhurst Institute, The University of Manchester（克里斯特贝尔·潘克赫斯特研究所，曼彻斯特大学）；Centre for Computational Imaging and Modelling in Medicine (CIMIM), Department of Computer Science, School of Engineering, and Division of Informatics Imaging and Data Science, School of Health Sciences, The University of Manchester（医学计算成像与建模中心（CIMIM），计算机科学系，工程学院，信息学成像与数据科学系，健康科学学院，曼彻斯特大学）；Medical Imaging Research Centre (MIRC), Department of Cardiovascular Sciences, KU Leuven（医学影像研究中心（MIRC），心血管科学系，鲁汶大学）
University of California, Berkeley（加州大学伯克利分校）；Open Source Medical Software Corporation（开源医疗软件公司）
Automated construction of surface geometries of cardiac structures from volumetric medical images is important for a number of clinical applications. While deep-learning-based approaches have demonstrated promising reconstruction precision, these approaches have mostly focused on voxel-wise segmentation followed by surface reconstruction and post-processing techniques. However, such approaches suffer from a number of limitations including disconnected regions or incorrect surface topology due to erroneous segmentation and stair-case artifacts due to limited segmentation resolution. We propose …
