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Super Resolution (SR) plays a critical role in computer vision, particularly in medical imaging, where hardware and acquisition time constraints often result in low spatial and temporal resolution. While diffusion models have been applied…

图像与视频处理 · 电气工程与系统科学 2024-11-01 Vishal Dubey

Brain midline shift (MLS) is one of the most critical factors to be considered for clinical diagnosis and treatment decision-making for intracranial hemorrhage. Existing computational methods on MLS quantification not only require intensive…

计算机视觉与模式识别 · 计算机科学 2023-01-03 Shizhan Gong , Cheng Chen , Yuqi Gong , Nga Yan Chan , Wenao Ma , Calvin Hoi-Kwan Mak , Jill Abrigo , Qi Dou

Dynamic magnetic resonance imaging (MRI) plays an indispensable role in cardiac diagnosis. To enable fast imaging, the k-space data can be undersampled but the image reconstruction poses a great challenge of high-dimensional processing.…

图像与视频处理 · 电气工程与系统科学 2024-10-03 Zi Wang , Min Xiao , Yirong Zhou , Chengyan Wang , Naiming Wu , Yi Li , Yiwen Gong , Shufu Chang , Yinyin Chen , Liuhong Zhu , Jianjun Zhou , Congbo Cai , He Wang , Di Guo , Guang Yang , Xiaobo Qu

A method for perfusion imaging with DCE-MRI is developed based on two popular paradigms: the low-rank + sparse model for optimisation-based reconstruction, and the deep unfolding. A learnable algorithm derived from a proximal algorithm is…

信号处理 · 电气工程与系统科学 2024-10-28 Ondřej Mokrý , Jiří Vitouš , Pavel Rajmic , Radovan Jiřík

Recent applications of pattern recognition techniques on brain connectome classification using functional connectivity (FC) are shifting towards acknowledging the non-Euclidean topology and dynamic aspects of brain connectivity across time.…

机器学习 · 计算机科学 2024-11-12 Sin-Yee Yap , Junn Yong Loo , Chee-Ming Ting , Fuad Noman , Raphael C. -W. Phan , Adeel Razi , David L. Dowe

CT perfusion (CTP) has been used to triage ischemic stroke patients in the early stage, because of its speed, availability, and lack of contraindications. Perfusion parameters including cerebral blood volume (CBV), cerebral blood flow…

图像与视频处理 · 电气工程与系统科学 2019-06-07 Tao Song

Arterial spin labeling perfusion MRI is a noninvasive technique for measuring quantitative cerebral blood flow (CBF), but the measurement is subject to a low signal-to-noise-ratio(SNR). Various post-processing methods have been proposed to…

计算机视觉与模式识别 · 计算机科学 2018-01-31 Danfeng Xie , Li Bai , Ze Wang

Stochastic Computing (SC) is a computing paradigm that allows for the low-cost and low-power computation of various arithmetic operations using stochastic bit streams and digital logic. In contrast to conventional representation schemes…

新兴技术 · 计算机科学 2021-03-18 Corey Lammie , Jason K. Eshraghian , Wei D. Lu , Mostafa Rahimi Azghadi

Time is a fundamental factor during stroke treatments. A fast, automatic approach that segments the ischemic regions helps treatment decisions. In clinical use today, a set of color-coded parametric maps generated from computed tomography…

图像与视频处理 · 电气工程与系统科学 2023-08-22 Luca Tomasetti , Mahdieh Khanmohammadi , Kjersti Engan , Liv Jorunn Høllesli , Kathinka Dæhli Kurz

Incoherent k-space undersampling and deep learning-based reconstruction methods have shown great success in accelerating MRI. However, the performance of most previous methods will degrade dramatically under high acceleration factors, e.g.,…

图像与视频处理 · 电气工程与系统科学 2026-01-21 Jin Liu , Qing Lin , Zhuang Xiong , Shanshan Shan , Chunyi Liu , Min Li , Feng Liu , G. Bruce Pike , Hongfu Sun , Yang Gao

Purpose: To develop a robust deep learning framework for non-contrast-enhanced functional lung MRI, overcoming the limitations of spectral decomposition in the presence of physiological non-stationarity. Methods: We introduce VQ-Wave…

医学物理 · 物理学 2026-05-05 Grzegorz Bauman , Pavlos Panos , Philipp Latzin , Oliver Bieri

Background and Objective: Vital sign monitoring in the Intensive Care Unit (ICU) is crucial for enabling prompt interventions for patients. This underscores the need for an accurate predictive system. Therefore, this study proposes a novel…

机器学习 · 计算机科学 2024-04-05 Ping Chang , Huayu Li , Stuart F. Quan , Shuyang Lu , Shu-Fen Wung , Janet Roveda , Ao Li

In this paper, a novel deep learning framework is proposed for temporal super-resolution simulation of blood vessel flows, in which a high-temporal-resolution time-varying blood vessel flow simulation is generated from a…

图像与视频处理 · 电气工程与系统科学 2021-11-23 Zhizheng Jiang , Fei Gao , Renshu Gu , Jinlan Xu , Gang Xu , Timon Rabczuk

Stroke lesion volume is a key radiologic measurement for assessing the prognosis of Acute Ischemic Stroke (AIS) patients, which is challenging to be automatically measured on Non-Contrast CT (NCCT) scans. Recent diffusion probabilistic…

计算机视觉与模式识别 · 计算机科学 2023-07-19 Jianhai Zhang , Tonghua Wan , Ethan MacDonald , Bijoy Menon , Aravind Ganesh , Qiu Wu

Chemical Species Tomography (CST) has been widely used for in situ imaging of critical parameters, e.g. species concentration and temperature, in reactive flows. However, even with state-of-the-art computational algorithms the method is…

图像与视频处理 · 电气工程与系统科学 2021-04-06 Yunfan Jiang , Jingjing Si , Rui Zhang , Godwin Enemali , Bin Zhou , Hugh McCann , Chang Liu

The quantification of myocardial perfusion MRI has the potential to provide a fast, automated and user-independent assessment of myocardial ischaemia. However, due to the relatively high noise level and low temporal resolution of the…

图像与视频处理 · 电气工程与系统科学 2019-07-30 Cian M. Scannell , Piet van den Bosch , Amedeo Chiribiri , Jack Lee , Marcel Breeuwer , Mitko Veta

To collectively forecast the demand for ride-sourcing services in all regions of a city, the deep learning approaches have been applied with commendable results. However, the local statistical differences throughout the geographical layout…

机器学习 · 计算机科学 2020-04-27 Feng Xiao , Dapeng Zhang , Gang Kou , Lu Li

4D Flow Magnetic Resonance Imaging (4D Flow MRI) is a non-invasive technique for volumetric, time-resolved blood flow quantification. However, apparent trade-offs between acquisition time, image noise, and resolution limit clinical…

Diffusion MRI (dMRI) is the primary imaging modality used to study brain microstructure in vivo. Reliable and computationally efficient parameter inference for common dMRI biophysical models is a challenging inverse problem, due to factors…

图像与视频处理 · 电气工程与系统科学 2025-03-03 William Consagra , Lipeng Ning , Yogesh Rathi

We use a data-driven approach to model a three-dimensional turbulent flow using cutting-edge Deep Learning techniques. The deep learning framework incorporates physical constraints on the flow, such as preserving incompressibility and…

流体动力学 · 物理学 2021-12-08 Mohammadreza Momenifar , Enmao Diao , Vahid Tarokh , Andrew D. Bragg