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This dissertation is devoted to provide advanced nonconvex nonsmooth variational models of (Magnetic Resonance Image) MRI reconstruction, efficient learnable image reconstruction algorithms and parameter training algorithms that improve the…

最优化与控制 · 数学 2023-03-06 Wanyu Bian

Magnetic Resonance Imaging (MRI) is widely used in clinical practice, but suffered from prolonged acquisition time. Although deep learning methods have been proposed to accelerate acquisition and demonstrate promising performance, they rely…

图像与视频处理 · 电气工程与系统科学 2025-12-30 Hao Zhang , Qi Wang , Jian Sun , Zhijie Wen , Jun Shi , Shihui Ying

Wearable sensors for measuring head kinematics can be noisy due to imperfect interfaces with the body. Mouthguards are used to measure head kinematics during impacts in traumatic brain injury (TBI) studies, but deviations from reference…

Current methods for magnetic resonance-based positron emission tomography attenuation correction (PET-MR AC) are time consuming, and less able than computed tomography (CT)-based AC methods to capture inter-individual variability and skull…

Brain morphometry from magnetic resonance imaging (MRI) is a consolidated biomarker for many neurodegenerative diseases. Recent advances in this domain indicate that deep convolutional neural networks can infer morphometric measurements…

图像与视频处理 · 电气工程与系统科学 2020-09-09 Rodrigo Santa Cruz , Léo Lebrat , Pierrick Bourgeat , Vincent Doré , Jason Dowling , Jurgen Fripp , Clinton Fookes , Olivier Salvado

Recent learning-based correction approaches in EPI estimate a displacement field, unwarp the reversed-PE image pair with the estimated field, and average the unwarped pair to yield a corrected image. Unsupervised learning in these…

图像与视频处理 · 电气工程与系统科学 2023-10-12 Abdallah Zaid Alkilani , Tolga Çukur , Emine Ulku Saritas

We propose MHR-Net, a novel method for recovering Non-Rigid Shapes from Motion (NRSfM). MHR-Net aims to find a set of reasonable reconstructions for a 2D view, and it also selects the most likely reconstruction from the set. To deal with…

计算机视觉与模式识别 · 计算机科学 2023-01-13 Haitian Zeng , Xin Yu , Jiaxu Miao , Yi Yang

Advances in the motor imagery (MI)-based brain-computer interfaces (BCIs) allow control of several applications by decoding neurophysiological phenomena, which are usually recorded by electroencephalography (EEG) using a non-invasive…

Medical image denoising is considered among the most challenging vision tasks. Despite the real-world implications, existing denoising methods have notable drawbacks as they often generate visual artifacts when applied to heterogeneous…

图像与视频处理 · 电气工程与系统科学 2025-03-11 S M A Sharif , Rizwan Ali Naqvi , Woong-Kee Loh

Purpose: To develop a deep-learning-based image reconstruction framework for reproducible research in MRI. Methods: The BART toolbox offers a rich set of implementations of calibration and reconstruction algorithms for parallel imaging and…

计算机视觉与模式识别 · 计算机科学 2024-02-20 Moritz Blumenthal , Guanxiong Luo , Martin Schilling , H. Christian M. Holme , Martin Uecker

Portable, low-field Magnetic Resonance Imaging (MRI) scanners are increasingly being deployed in clinical settings. However, key barriers to their widespread use include low signal-to-noise ratio (SNR), generally low image quality, and long…

Brain segmentation from neonatal MRI images is a very challenging task due to large changes in the shape of cerebral structures and variations in signal intensities reflecting the gestational process. In this context, there is a clear need…

机器学习 · 统计学 2023-09-12 R Valabregue , F Girka , A Pron , F Rousseau , G Auzias

Since medical image data sets contain few samples and singular features, lesions are viewed as highly similar to other tissues. The traditional neural network has a limited ability to learn features. Even if a host of feature maps is…

计算机视觉与模式识别 · 计算机科学 2020-09-29 Hongfeng You , Long Yu , Shengwei Tian , Xiang Ma , Yan Xing , Xiaojie Ma

Data-driven modeling of human motions is ubiquitous in computer graphics and computer vision applications, such as synthesizing realistic motions or recognizing actions. Recent research has shown that such problems can be approached by…

图形学 · 计算机科学 2019-08-21 He Wang , Edmond S. L. Ho , Hubert P. H. Shum , Zhanxing Zhu

Low-field (LF) MRI scanners have the power to revolutionize medical imaging by providing a portable and cheaper alternative to high-field MRI scanners. However, such scanners are usually significantly noisier and lower quality than their…

图像与视频处理 · 电气工程与系统科学 2022-11-29 Aryan Kalluvila , Neha Koonjoo , Danyal Bhutto , Marcio Rockenbach , Matthew S. Rosen

Automated prostate segmentation in MRI is highly demanded for computer-assisted diagnosis. Recently, a variety of deep learning methods have achieved remarkable progress in this task, usually relying on large amounts of training data. Due…

图像与视频处理 · 电气工程与系统科学 2020-02-20 Quande Liu , Qi Dou , Lequan Yu , Pheng Ann Heng

There is much recent interest in techniques to accelerate the data acquisition process in MRI by acquiring limited measurements. Often sophisticated reconstruction algorithms are deployed to maintain high image quality in such settings. In…

图像与视频处理 · 电气工程与系统科学 2022-05-20 Zhishen Huang , Saiprasad Ravishankar

The goal of MRI reconstruction is to restore a high fidelity image from partially observed measurements. This partial view naturally induces reconstruction uncertainty that can only be reduced by acquiring additional measurements. In this…

计算机视觉与模式识别 · 计算机科学 2019-02-11 Zizhao Zhang , Adriana Romero , Matthew J. Muckley , Pascal Vincent , Lin Yang , Michal Drozdzal

Medical imaging techniques, especially Magnetic Resonance Imaging (MRI), are accepted as the gold standard in the diagnosis and treatment planning of neurological diseases. However, the manual analysis of MRI images is a time-consuming…

图像与视频处理 · 电气工程与系统科学 2026-04-03 Okan Uçar , Murat Kurt

Myocardial T1 mapping is a cardiac MRI technique, used to assess myocardial fibrosis. In this technique, a series of T1-weighted MRI images are acquired with different saturation or inversion times. These images are fitted to the T1 model…

图像与视频处理 · 电气工程与系统科学 2021-09-22 Dar Arava , Mohammad Masarwy , Samah Khawaled , Moti Freiman