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Iterative image reconstruction algorithms for optoacoustic tomography (OAT), also known as photoacoustic tomography, have the ability to improve image quality over analytic algorithms due to their ability to incorporate accurate models of…

偏微分方程分析 · 数学 2015-06-05 Kun wang , Richard Su , Alexander A. Oraevsky , Mark A. Anastasio

We introduce a new method that efficiently computes a set of viewpoints and trajectories for high-quality 3D reconstructions in outdoor environments. Our goal is to automatically explore an unknown area, and obtain a complete 3D scan of a…

计算机视觉与模式识别 · 计算机科学 2018-09-19 Benjamin Hepp , Matthias Nießner , Otmar Hilliges

Common spatial pattern (CSP) is a popular feature extraction method for electroencephalogram (EEG) motor imagery (MI). This study modifies the conventional CSP algorithm to improve the multi-class MI classification accuracy and ensure the…

信号处理 · 电气工程与系统科学 2020-09-02 Ce Zhang , Azim Eskandarian

Purpose: We implemented the blip-up, blip-down circular echo planar imaging (BUDA-cEPI) sequence with readout and phase partial Fourier to reduced off-resonance effect and T2* blurring. BUDA-cEPI reconstruction with S-based low-rank…

Positron emission tomography (PET) is a cornerstone of modern radiology. The ability to detect cancer and metastases in whole body scans fundamentally changed cancer diagnosis and treatment. One of the main bottlenecks in the clinical…

计算机视觉与模式识别 · 计算机科学 2022-04-28 Ida Häggström , C. Ross Schmidtlein , Gabriele Campanella , Thomas J. Fuchs

The reconstruction of 3D objects from brain signals has gained significant attention in brain-computer interface (BCI) research. Current research predominantly utilizes functional magnetic resonance imaging (fMRI) for 3D reconstruction…

图形学 · 计算机科学 2025-05-06 Xia Deng , Shen Chen , Jiale Zhou , Lei Li

Purpose: To develop and evaluate methods for 1) reconstructing 3D-quantification using an interleaved Look-Locker acquisition sequence with T2 preparation pulse (3D-QALAS) time-series images using a low-rank subspace method, which enables…

图像与视频处理 · 电气工程与系统科学 2024-01-25 Yohan Jun , Yamin Arefeen , Jaejin Cho , Shohei Fujita , Xiaoqing Wang , P. Ellen Grant , Borjan Gagoski , Camilo Jaimes , Michael S. Gee , Berkin Bilgic

In the application of brain-computer interface (BCI), being able to accurately decode brain signals is a critical task. For the multi-class classification task of brain signal ECoG, how to improve the classification accuracy is one of the…

数值分析 · 数学 2025-01-07 Changqing Ji

Reconstructing images from downsampled and noisy measurements, such as MRI and low dose Computed Tomography (CT), is a mathematically ill-posed inverse problem. We propose an easy-to-use reconstruction method based on Expectation…

图像与视频处理 · 电气工程与系统科学 2022-08-29 Robert G. Aykroyd , Kehinde Olobatuyi

Neuroscientists have recently turned to intracranial brain recording methods, like electrocorticography (ECoG), for human experiments because of the fine spatial and temporal resolution that they afford. Models trained on this data,…

计算与语言 · 计算机科学 2026-05-20 Aditya R. Vaidya , Richard J. Antonello , Alexander G. Huth

Compressive spectral imaging (CSI) has emerged as an alternative spectral image acquisition technology, which reduces the number of measurements at the cost of requiring a recovery process. In general, the reconstruction methods are based…

图像与视频处理 · 电气工程与系统科学 2021-05-19 Jorge Bacca , Yesid Fonseca , Henry Arguello

Perfusion-weighted magnetic resonance imaging (MRI) is an imaging technique that allows one to measure tissue perfusion in an organ of interest through the injection of an intravascular paramagnetic contrast agent (CA). Due to a preference…

计算机视觉与模式识别 · 计算机科学 2017-08-28 Cagdas Ulas , Christine Preibisch , Jonathan Sperl , Thomas Pyka , Jayashree Kalpathy-Cramer , Bjoern Menze

Effective clutter filtering is crucial in suppressing tissue clutter and extracting blood flow signal in Doppler ultrasound. Recent advances in eigen-based clutter filtering techniques have enabled ultrasound imaging of microvasculature…

医学物理 · 物理学 2024-05-21 Chengwu Huang , U-Wai Lok , Jingke Zhang , Hui Liu , Shigao Chen

In this paper, a novel convolutional neural network (CNN)-based framework is developed for light field reconstruction from a sparse set of views. We indicate that the reconstruction can be efficiently modeled as angular restoration on an…

图像与视频处理 · 电气工程与系统科学 2021-03-25 Gaochang Wu , Yebin Liu , Lu Fang , Qionghai Dai , Tianyou Chai

Among the various generative adversarial network (GAN)-based image inpainting methods, a coarse-to-fine network with a contextual attention module (CAM) has shown remarkable performance. However, owing to two stacked generative networks,…

计算机视觉与模式识别 · 计算机科学 2020-03-20 Yong-Goo Shin , Min-Cheol Sagong , Yoon-Jae Yeo , Seung-Wook Kim , Sung-Jea Ko

Clinical adoption of multispectral optoacoustic tomography necessitates improvements of the image quality available in real-time, as well as a reduction in the scanner financial cost. Deep learning approaches have recently unlocked the…

图像与视频处理 · 电气工程与系统科学 2024-08-15 Christoph Dehner , Guillaume Zahnd

Dual-energy computed tomography (DECT) has been widely used to obtain quantitative elemental composition of imaged subjects for personalized and precise medical diagnosis. Compared with DECT leveraging advanced X-ray source and/or detector…

医学物理 · 物理学 2024-08-28 Qiaoxin Li , Ruifeng Chen , Peng Wang , Guotao Quan , Yanfeng Du , Dong Liang , Yinsheng Li

Time-resolved CT is an advanced measurement technique that has been widely used to observe dynamic objects, including periodically varying structures such as hearts, lungs, or hearing structures. To reconstruct these objects from CT…

医学物理 · 物理学 2025-06-05 Qianwei Qu , Christian M. Schlepütz , Marco Stampanoni

Electrical Impedance Tomography (EIT) is a non-invasive, low-cost bedside imaging modality with high temporal resolution, making it suitable for bedside monitoring. However, its inherently ill-posed inverse problem poses significant…

计算机视觉与模式识别 · 计算机科学 2025-07-21 Hao Fang , Sihao Teng , Hao Yu , Siyi Yuan , Huaiwu He , Zhe Liu , Yunjie Yang

Speed-of-sound is a biomechanical property for quantitative tissue differentiation, with great potential as a new ultrasound-based image modality. A conventional ultrasound array transducer can be used together with an acoustic mirror, or…

计算机视觉与模式识别 · 计算机科学 2018-07-20 Valery Vishnevskiy , Sergio J Sanabria , Orcun Goksel