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An Introductory Overview of image-based Computational modeling in Personalized Cardiovascular Medicine

FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY 2020年 8卷 529365页

作者： Nguyen, Thanh Danh Kadri, Olufemi E. Voronov, Roman S. New Jersey Inst Technol Newark Coll Engn Otto H York Dept Chem & Mat Engn Newark NJ 07102 USA Univ Cincinnati UC P&G Simulat Ctr Cincinnati OH USA New Jersey Inst Technol Dept Biomed Engn Newark Coll Engn Newark NJ 07102 USA

Cardiovascular diseases account for the number one cause of deaths in the world. Part of the reason for such grim statistics is our limited understanding of the underlying mechanisms causing these devastating pathologies, which is made difficult by the invasiveness of the procedures associated with their diagnosis (e.g., inserting catheters into the coronal artery to measure blood flow to the heart). Likewise, it is also difficult to design and test assistive devices without implanting themin vivo. However, with the recent advancements made in biomedical scanning technologies and computer simulations, image-based modeling (IBM) has arisen as the next logical step in the evolution of non-invasive patient-specific cardiovascular medicine. Yet, due to its novelty, it is still relatively unknown outside of the niche field. Therefore, the goal of this manuscript is to review the current state-of-the-art and the limitations of the methods used in this area of research, as well as their applications to personalized cardiovascular investigations and treatments. Specifically, the modeling of three different physics - electrophysiology, biomechanics and hemodynamics - used in the cardiovascular IBM is discussed in the context of the physiology that each one of them describes and the mechanisms of the underlying cardiac diseases that they can provide insight into. Only the "bare-bones" of the modeling approaches are discussed in order to make this introductory material more accessible to an outside observer. Additionally, the imaging methods, the aspects of the unique cardiac anatomy derived from them, and their relation to the modeling algorithms are reviewed. Finally, conclusions are drawn about the future evolution of these methods and their potential toward revolutionizing the non-invasive diagnosis, virtual design of treatments/assistive devices, and increasing our understanding of these lethal cardiovascular diseases.

关键词： image-based modeling personalized cardiovascular medicine cardio electromechanics hemodynamics thrombogenesis simulation biomechanics heart

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image-based Facade modeling

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ACM TRANSACTIONS ON GRAPHICS 2008年第5期27卷 1-10页

作者： Xiao, Jianxiong Fang, Tian Tan, Ping Zhao, Peng Ofek, Eyal Quan, Long Hong Kong Univ Sci & Technol Hong Kong Hong Kong Peoples R China Natl Univ Singapore Singapore Singapore Microsoft Corp Redmond WA 98052 USA

We propose in this paper a semi-automatic image-based approach to facade modeling that uses images captured along streets and relies on structure from motion to recover camera positions and point clouds automatically as the initial stage for modeling. We start by considering a building facade as a flat rectangular plane or a developable surface with an associated texture image composited from the multiple visible images. A facade is then decomposed and structured into a Directed Acyclic Graph of rectilinear elementary patches. The decomposition is carried out top-down by a recursive subdivision, and followed by a bottom-up merging with the detection of the architectural bilateral symmetry and repetitive patterns. Each subdivided patch of the flat facade is augmented with a depth optimized using the 3D points cloud. Our system also allows for an easy user feedback in the 2D image space for the proposed decomposition and augmentation. Finally, our approach is demonstrated on a large number of facades from a variety of street-side images.

关键词： image-based modeling building modeling facade modeling city modeling photography

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image-based computer modeling assessment of microwave ablation for treatment of adrenal tumors

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INTERNATIONAL JOURNAL OF HYPERTHERMIA 2022年第1期39卷 1264-1275页

作者： Sebek, Jan Cappiello, Grazia Rahmani, George Zeinali, Nooshin Keating, Muireann Fayemiwo, Michael Harkin, Jim McDaid, Liam Gardiner, Bryan Sheppard, Declan Senanayake, Russell Gurnell, Mark O'Halloran, Martin Dennedy, M. Conall Prakash, Punit Kansas State Univ Mike Wiegers Dept Elect & Comp Engn 3078 Engn Hall1701D Platt St Manhattan KS 66506 USA Natl Univ Ireland Translat Med Devices Lab Galway Ireland Galway Univ Hosp Dept Radiol Galway Ireland Natl Univ Ireland Sch Med Galway Ireland Ulster Univ Sch Comp Engn & Intelligent Syst Derry Londonderry North Ireland Univ Cambridge Inst Metab Sci Cambridge England

Purpose To assess the feasibility of delivering microwave ablation for targeted treatment of aldosterone producing adenomas using image-based computational models. Methods We curated an anonymized dataset of diagnostic C-11-metomidate PET/CT images of 14 patients with aldosterone producing adenomas (APA). A semi-automated approach was developed to segment the APA, adrenal gland, and adjacent organs within 2 cm of the APA boundary. The segmented volumes were used to implement patient-specific 3D electromagnetic-bioheat transfer models of microwave ablation with a 2.45 GHz directional microwave ablation applicator. Ablation profiles were quantitatively assessed based on the extent of the APA target encompassed by an ablative thermal dose, while limiting thermal damage to the adjacent normal adrenal tissue and sensitive critical structures. Results Across the 14 patients, adrenal tumor volumes ranged between 393 mm(3) and 2,395 mm(3). On average, 70% of the adrenal tumor volumes received an ablative thermal dose of 240CEM43, while limiting thermal damage to non-target structures, and thermally sparing 83.5-96.4% of normal adrenal gland. Average ablation duration was 293 s (range: 60-600 s). Simulations indicated coverage of the APA with an ablative dose was limited when the axis of the ablation applicator was not well aligned with the major axis of the targeted APA. Conclusions image-based computational models demonstrate the potential for delivering microwave ablation to APA targets within the adrenal gland, while limiting thermal damage to surrounding non-target structures.

关键词： image-based modeling microwave ablation aldosterone-producing adenomas patient-specific modeling thermal damage

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A Data-driven Approach to Four-view image-based Hair modeling

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ACM TRANSACTIONS ON GRAPHICS 2017年第4期36卷 1-11页

作者： Zhang, Meng Chai, Menglei Wu, Hongzhi Yang, Hao Zhou, Kun Zhejiang Univ State Key Lab CAD & CG Hangzhou Zhejiang Peoples R China

We introduce a novel four-view image-based hair modeling method. Given four hair images taken from the front, back, left and right views as input, we first estimate the rough 3D shape of the hair observed in the input using a predefined database of 3D hair models, then synthesize a hair texture on the surface of the shape, from which the hair growing direction information is calculated and used to construct a 3D direction field in the hair volume. Finally, we grow hair strands from the scalp, following the direction field, to produce the 3D hair model, which closely resembles the hair in all input images. Our method does not require that all input images are from the same hair, enabling an effective way to create compelling hair models from images of considerably different hairstyles at different views. We demonstrate the efficacy of our method using a wide range of examples.

关键词： hair modeling image-based modeling patch-based texture synthesis

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image-based procedural modeling of facades 07

Image-based procedural modeling of facades

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ACM SIGGRAPH 2007 Conference

作者： Mueller, Pascal Zeng, Gang Wonka, Peter Van Gool, Luc Swiss Fed Inst Technol Zurich Switzerland Arizona State Univ Tempe AZ 85287 USA Katholieke Univ Leuven Louvain Belgium

ISBN: (纸本)9781450378369

This paper describes algorithms to automatically derive 3D models of high visual quality from single facade images of arbitrary resolutions. We combine the procedural modeling pipeline of shape grammars with image analysis to derive a meaningful hierarchical facade subdivision. Our system gives rise to three exciting applications: urban reconstruction based on low resolution oblique aerial imagery, reconstruction of facades based on higher resolution ground-based imagery, and the automatic derivation of shape grammar rules from facade images to build a rule base for procedural modeling technology.

关键词： procedural modeling image-based modeling urban reconstruction design computation architecture

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Approximate image-based tree-modeling using particle flows 07

Approximate image-based tree-modeling using particle flows

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ACM SIGGRAPH 2007 Conference

作者： Neubert, Boris Franken, Thomas Deussen, Oliver Univ Konstanz D-7750 Constance Germany

ISBN: (纸本)9781450378369

We present a method for producing 3D tree models from input photographs with only limited user intervention. An approximate voxel-based tree volume is estimated using image information. The density values of the voxels are used to produce initial positions for a set of particles. Performing a 3D flow simulation, the particles are traced downwards to the tree basis and are combined to form twigs and branches. If possible, the trunk and the first-order branches are determined in the input photographs and are used as attractors for particle simulation. The geometry of the tree skeleton is produced using botanical rules for branch thicknesses and branching angles. Finally, leaves are added. Different initial seeds for particle simulation lead to a variety, yet similar-looking branching structures for a single set of photographs.

关键词： image-based modeling plant models botanics

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image-based surveying and modeling of the unprotected architectural heritage-St. Rudolf's church in banostor 24

Image-based surveying and modeling of the unprotected archit...

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2018 TC V - ISPRS 24th International CIPA Symposium

作者： Stojakovic, V. Bajsanski, I. Department or Architecture Faculty of Technical Sciences University of Novi Sad Trg Dositeja Obradovica 6 Novi Sad21000 Serbia

The aim of this paper is to present image-based recording of the unprotected architectural heritage in threat and its advantages integrating different modeling methods. Considering the construction problems in unprotected buildings we applied variations of low-budget image-based 3D modeling reconstructions techniques and built the complete virtual 3D reconstruction of highly damaged church of St. Rudolph in Banostor. The resulting model reveals many construction and design details that can not be perceived by a simple observing. In this paper, the importance of integrating a variety of measuring and modeling methodologies in order to achieve digital reconstruction of the unapproachable ruined building is demonstrated. The paper describes survey techniques and workflow, focusing on advantages as well as problems and limitations of each method. © 2013 Copernicus. All rights reserved.

关键词： architectural heritage image-based modeling photogrammetry Single view reconstruction

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Approximate image-based tree-modeling using particle flows

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ACM TRANSACTIONS ON GRAPHICS 2007年第3期26卷

作者： Neubert, Boris Franken, Thomas Deussen, Oliver Univ Konstanz D-7750 Constance Germany

关键词： image-based modeling plant models botanics

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image-based procedural modeling of facades

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ACM TRANSACTIONS ON GRAPHICS 2007年第3期26卷

作者： Mueller, Pascal Zeng, Gang Wonka, Peter Van Gool, Luc Swiss Fed Inst Technol Zurich Switzerland Arizona State Univ Tempe AZ 85287 USA Katholieke Univ Leuven Louvain Belgium

关键词： procedural modeling image-based modeling urban reconstruction design computation architecture

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image-based plant modeling

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ACM TRANSACTIONS ON GRAPHICS 2006年第3期25卷 599-604页

作者： Quan, Long Tan, Ping Zeng, Gang Yuan, Lu Wang, Jingdong Kang, Sing Bing Hong Kong Univ Sci & Technol Hong Kong Hong Kong Peoples R China Microsoft Corp Res Redmond WA 98052 USA

In this paper, we propose a semi-automatic technique for modeling plants directly from images. Our image-based approach has the distinct advantage that the resulting model inherits the realistic shape and complexity of a real plant. We designed our modeling system to be interactive, automating the process of shape recovery while relying on the user to provide simple hints on segmentation. Segmentation is performed in both image and 3D spaces, allowing the user to easily visualize its effect immediately. Using the segmented image and 3D data, the geometry of each leaf is then automatically recovered from the multiple views by fitting a deformable leaf model. Our system also allows the user to easily reconstruct branches in a similar manner. We show realistic reconstructions of a variety of plants, and demonstrate examples of plant editing.

关键词： tree modeling plant modeling image-based modeling photography

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