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We propose a suite of technologies for analyzing the interaction between anisotropic arterial walls and blood flow for subject-specific geometries. Utilizing an established lumen modeling strategy, we present a comprehensive pipeline for…

医学物理 · 物理学 2024-06-21 Yujie Sun , Jiayi Huang , Qingshuang Lu , Xinhai Yue , Xuanming Huang , Wei He , Yun Shi , Ju Liu

Objective: This work evaluates a new approach for calculating the left-ventricular (LV) early filling propagation velocity (VP) from color M-Mode (CMM) echocardiograms using wavelet analysis. Unlike current approaches, the method requires…

医学物理 · 物理学 2019-10-29 Sreyashi Chakraborty , Hiroyuki Iwano , Michael E. Hall , Pavlos P. Vlachos

Doppler holography is an emerging retinal imaging technique that captures the dynamic behavior of blood flow with high temporal resolution, enabling quantitative assessment of retinal hemodynamics. This requires accurate segmentation of…

计算机视觉与模式识别 · 计算机科学 2026-02-20 Marius Dubosc , Yann Fischer , Zacharie Auray , Nicolas Boutry , Edwin Carlinet , Michael Atlan , Thierry Geraud

Mathematical modeling at the level of the full cardiovascular system requires the numerical approximation of solutions to a one-dimensional nonlinear hyperbolic system describing flow in a single vessel. This model is often simulated by…

计算物理 · 物理学 2015-04-22 Sebastian Acosta , Charles Puelz , Beatrice Riviere , Daniel J. Penny , Craig G. Rusin

The asymptotic derivation of a new family of one-dimensional, weakly nonlinear and weakly dispersive equations that model the flow of an ideal fluid in an elastic vessel is presented. Dissipative effects due to the viscous nature of the…

流体动力学 · 物理学 2020-02-20 Dimitrios Mitsotakis , Denys Dutykh , Li Qian

Longitudinal brain analysis is essential for understanding healthy aging and identifying pathological deviations. Longitudinal registration of sequential brain MRI underpins such analyses. However, existing methods are limited by reliance…

图像与视频处理 · 电气工程与系统科学 2026-03-31 Bailiang Jian , Jiazhen Pan , Yitong Li , Fabian Bongratz , Ruochen Li , Daniel Rueckert , Benedikt Wiestler , Christian Wachinger

We propose a method to classify cardiac pathology based on a novel approach to extract image derived features to characterize the shape and motion of the heart. An original semi-supervised learning procedure, which makes efficient use of a…

计算机视觉与模式识别 · 计算机科学 2019-03-29 Qiao Zheng , Hervé Delingette , Nicholas Ayache

Left ventricular segmentation is essential for measuring left ventricular function indices. Segmentation of one or several images requires an initial guess of the contour. It is hypothesized here that creating an initial guess by first…

计算机视觉与模式识别 · 计算机科学 2015-10-13 Yael Petrank , Nahum Smirin , Yossi Tsadok , Zvi Friedman , Peter Lysiansky , Dan Adam

The clinical application of patient-specific modelling of the heart can provide valuable insights in supplementing and advancing methods of diagnosis as well as helping to devise the best possible therapeutic approach for each individual…

医学物理 · 物理学 2023-08-03 Sebastian Skatulla , Carlo Sansour , Mary Familusi , Jagir Hussan , Ntobeko Ntusi

Despite tremendous advances in cardiovascular medicine, significant opportunities remain to improve coronary artery disease (CAD) prevention and treatment strategies. The key limitation lies in the understanding of disease formation and…

Cardio/cerebrovascular diseases (CVD) have become one of the major health issue in our societies. But recent studies show that the present pathology tests to detect CVD are ineffectual as they do not consider different stages of platelet…

Capillaries are the smallest vessels in the body responsible for delivering oxygen and nutrients to surrounding cells. Various life-threatening diseases are known to alter the density of healthy capillaries and the flow velocity of…

图像与视频处理 · 电气工程与系统科学 2022-04-15 Maged Helmy , Anastasiya Dykyy , Tuyen Trung Truong , Paulo Ferreira , Eric Jul

The automatic segmentation of blood vessels in fundus images can help analyze the condition of retinal vasculature, which is crucial for identifying various systemic diseases like hypertension, diabetes, etc. Despite the success of Deep…

图像与视频处理 · 电气工程与系统科学 2023-04-26 Ashish Kumar , R. K. Agrawal , Leve Joseph

Objective- Heart rate monitoring using wrist type Photoplethysmographic (PPG) signals is getting popularity because of construction simplicity and low cost of wearable devices. The task becomes very difficult due to the presence of various…

Abdominal Aortic Aneurysm consists of a permanent dilation in the abodminal portion of the aorta and, along with its associated pathologies like calcifications and intraluminal thrombi, is one of the most important pathologies of the…

The segmentation of the left ventricle (LV) from CINE MRI images is essential to infer important clinical parameters. Typically, machine learning algorithms for automated LV segmentation use annotated contours from only two cardiac phases,…

计算机视觉与模式识别 · 计算机科学 2018-09-05 Nicoló Savioli , Miguel Silva Vieira , Pablo Lamata , Giovanni Montana

Valve annuli motion and morphology, measured from non-invasive imaging, can be used to gain a better understanding of healthy and pathological heart function. Measurements such as long-axis strain as well as peak strain rates provide…

图像与视频处理 · 电气工程与系统科学 2020-10-26 Eric Kerfoot , Carlos Escudero King , Tefvik Ismail , David Nordsletten , Renee Miller

An accurate assessment of the cardiovascular system and prediction of cardiovascular diseases (CVDs) are crucial. Measured cardiac blood flow data provide insights about patient-specific hemodynamics, where many specialized techniques have…

Quantitative myocardial perfusion mapping has advantages over qualitative assessment, including the ability to detect global flow reduction. However, it is not clinically available and remains as a research tool. Building upon the…

图像与视频处理 · 电气工程与系统科学 2019-10-17 Hui Xue , Louise A. E. Brown , Sonia Nielles-Vallespin , Sven Plein , Peter Kellman

Arrival flow profiles enable precise assessment of urban arterial dynamics, aiding signal control optimization. License Plate Recognition (LPR) data, with its comprehensive coverage and event-based detection, is promising for reconstructing…

物理与社会 · 物理学 2025-02-28 Hao Wu , Jiarong Yao , Peize Kang , Chaopeng Tan , Yang Cai , Junjie Zhou , Edward Chung , Keshuang Tang