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Vibrational spectroscopy is a key technique to elucidate microscopic structure and dynamics. Without the aid of theoretical approaches, it is however, often difficult to understand such spectra at a microscopic level. Ab initio molecular…

Chemical Physics · Physics 2023-03-14 Philipp Schienbein

Molecular structure elucidation from spectra is a fundamental challenge in molecular science. Conventional approaches rely heavily on expert interpretation and lack scalability, while retrieval-based machine learning approaches remain…

Machine Learning · Computer Science 2025-11-06 Liang Wang , Yu Rong , Tingyang Xu , Zhenyi Zhong , Zhiyuan Liu , Pengju Wang , Deli Zhao , Qiang Liu , Shu Wu , Liang Wang , Yang Zhang

Most existing MRI reconstruction methods perform tar-geted reconstruction of the entire MR image without tak-ing specific tissue regions into consideration. This may fail to emphasize the reconstruction accuracy on im-portant tissues for…

Image and Video Processing · Electrical Eng. & Systems 2023-09-06 Yu Guan , Chuanming Yu , Shiyu Lu , Zhuoxu Cui , Dong Liang , Qiegen Liu

The application of NMR spectroscopy for studying molecular and reaction dynamics relies crucially on the measurement of the magnitude of radiofrequency (RF) fields that are used to nutate or lock the nuclear magnetization. Here, we report a…

Chemical Physics · Physics 2021-08-18 Ahallya Jaladeep , Claris Niya Varghese , Ashok Sekhar

Nuclear magnetic resonance (NMR) imaging with nanometer resolution requires new detection techniques with sensitivity well beyond the capability of conventional inductive detection. Here, we demonstrate two dimensional imaging of $^1$H NMR…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 D. Rugar , H. J. Mamin , M. H. Sherwood , M. Kim , C. T. Rettner , K. Ohno , D. D. Awschalom

Nuclear magnetic resonance (NMR) technique benefits from high magnetic field not only due to the field-enhanced measurement sensitivity and resolution, but also because it is a powerful tool to investigate field-induced physics in modern…

Instrumentation and Detectors · Physics 2023-05-05 Wenqi Wei , Qinying Liu , Le Yuan , Jian Zhang , Shiyu Liu , Rui Zhou , Yongkang Luo , Xiaotao Han

Nuclear magnetic resonance (NMR) spectroscopy provides detailed information pertaining to dynamic processes through line-shape changes, which have been traditionally limited to equilibrium conditions. However, there is a wealth of…

Recent innovations in Magnetic Resonance Imaging (MRI) hardware and software have reignited interest in low-field ($<1\,\mathrm{T}$) and ultra-low-field MRI ($<0.1\,\mathrm{T}$). These technologies offer advantages such as lower power…

Image and Video Processing · Electrical Eng. & Systems 2025-01-30 Andreas Kofler , Dongyue Si , David Schote , Rene M Botnar , Christoph Kolbitsch , Claudia Prieto

Magnetic resonance spectroscopy (MRS) is an established technique for studying tissue metabolism, particularly in central nervous system disorders. While powerful and versatile, MRS is often limited by challenges associated with data…

Quantitative Methods · Quantitative Biology 2024-08-29 Christopher J. Wu , Lawrence S. Kegeles , Jia Guo

Nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) spectroscopy of bulk quantum materials have provided insight into phenomena such as quantum phase criticality, magnetism, and superconductivity. With the emergence of…

Reconstructing visual stimuli from functional Magnetic Resonance Imaging fMRI enables fine-grained retrieval of brain activity. However, the accurate reconstruction of diverse details, including structure, background, texture, color, and…

Neural and Evolutionary Computing · Computer Science 2025-01-09 Haoyu Li , Hao Wu , Badong Chen

Neural Radiance Fields (NeRFs) are a powerful representation for modeling a 3D scene as a continuous function. Though NeRF is able to render complex 3D scenes with view-dependent effects, few efforts have been devoted to exploring its…

Computer Vision and Pattern Recognition · Computer Science 2022-11-18 Yifan Jiang , Peter Hedman , Ben Mildenhall , Dejia Xu , Jonathan T. Barron , Zhangyang Wang , Tianfan Xue

Magnetic Resonance Fingerprinting (MRF) is a time-efficient approach to quantitative MRI, enabling the mapping of multiple tissue properties from a single, accelerated scan. However, achieving accurate reconstructions remains challenging,…

Image and Video Processing · Electrical Eng. & Systems 2024-12-19 Perla Mayo , Carolin M. Pirkl , Alin Achim , Bjoern H. Menze , Mohammad Golbabaee

High-resolution (HR) magnetic resonance imaging (MRI) provides detailed anatomical information that is critical for diagnosis in the clinical application. However, HR MRI typically comes at the cost of long scan time, small spatial…

Computer Vision and Pattern Recognition · Computer Science 2020-03-10 Yuhua Chen , Anthony G. Christodoulou , Zhengwei Zhou , Feng Shi , Yibin Xie , Debiao Li

Diffusion-based Generative Models (DGMs) have achieved unparalleled performance in synthesizing high-quality visual content, opening up the opportunity to improve image super-resolution (SR) tasks. Recent solutions for these tasks often…

Computer Vision and Pattern Recognition · Computer Science 2023-06-02 Ruibin Li , Qihua Zhou , Song Guo , Jie Zhang , Jingcai Guo , Xinyang Jiang , Yifei Shen , Zhenhua Han

Magnetic resonance imaging (MRI) reconstruction is a fundamental task aimed at recovering high-quality images from undersampled or low-quality MRI data. This process enhances diagnostic accuracy and optimizes clinical applications. In…

Image and Video Processing · Electrical Eng. & Systems 2025-03-11 Xiaoyan Kui , Zijie Fan , Zexin Ji , Qinsong Li , Chengtao Liu , Weixin Si , Beiji Zou

We present a tool for resolution recovery in multimodal clinical magnetic resonance imaging (MRI). Such images exhibit great variability, both biological and instrumental. This variability makes automated processing with neuroimaging…

Image and Video Processing · Electrical Eng. & Systems 2019-09-04 Mikael Brudfors , Yael Balbastre , Parashkev Nachev , John Ashburner

Diffusion studies using nuclear magnetic resonance (NMR) spectroscopy were conducted on two model surfactant solutions of cetyltrimethylammonium bromide/sodium salicylate (CTAB/NaSal) and cetylpyridinium chloride/sodium salicylate…

Chemical Physics · Physics 2021-02-23 Samuel W. Holder , Samuel C. Grant , Hadi Mohammadigoushki

In many scientific applications, measured time series are corrupted by noise or distortions. Traditional denoising techniques often fail to recover the signal of interest, particularly when the signal-to-noise ratio is low or when certain…

Machine Learning · Computer Science 2022-11-02 Natalie Klein , Amber J. Day , Harris Mason , Michael W. Malone , Sinead A. Williamson

Nitrogen-vacancy (NV) centers in diamond have emerged as quantum sensors capable of detecting nuclear magnetic resonance (NMR) signals at unprecedented length scales, ranging from picoliter sample volumes down to single spins at the diamond…

Chemical Physics · Physics 2025-01-07 Nick R. von Grafenstein , Karl D. Briegel , Jorge Casanova , Dominik B. Bucher