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The electroencephalography (EEG) source imaging problem is very sensitive to the electrical modelling of the skull of the patient under examination. Unfortunately, the currently available EEG devices and their embedded software do not take…

机器学习 · 计算机科学 2020-02-04 Alexandra Koulouri , Ville Rimpilainen

The increasing complexity of medical imaging data underscores the need for advanced anomaly detection methods to automatically identify diverse pathologies. Current methods face challenges in capturing the broad spectrum of anomalies, often…

图像与视频处理 · 电气工程与系统科学 2024-01-22 Cosmin I. Bercea , Benedikt Wiestler , Daniel Rueckert , Julia A. Schnabel

Localizing neuronal activity in the brain, both in time and in space, is a central challenge to advance the understanding of brain function. Because of the inability of any single neuroimaging techniques to cover all aspects at once, there…

神经元与认知 · 定量生物学 2013-07-09 Yaroslav O. Halchenko , Michael Hanke , James V. Haxby , Stephen Jose Hanson , Christoph S. Herrmann

For beamforming ultrasound (US) signals, typically a spatially constant speed-of-sound (SoS) is assumed to calculate delays. As SoS in tissue may vary relatively largely, this approximation may cause wavefront aberrations, thus degrading…

图像与视频处理 · 电气工程与系统科学 2019-12-12 Richard Rau , Dieter Schweizer , Valery Vishnevskiy , Orcun Goksel

Semi-Supervised Learning (SSL) is important for reducing the annotation cost for medical image segmentation models. State-of-the-art SSL methods such as Mean Teacher, FixMatch and Cross Pseudo Supervision (CPS) are mainly based on…

计算机视觉与模式识别 · 计算机科学 2025-09-03 Weiren Zhao , Lanfeng Zhong , Xin Liao , Wenjun Liao , Sichuan Zhang , Shaoting Zhang , Guotai Wang

Acoustic focusing plays a pivotal role in a wide variety of applications ranging from medical science to nondestructive testing. Previous works have shown that acoustic metagratings can overcome the inherent efficiency limitations of…

The degree of malignancy of osteosarcoma and its tendency to metastasize/spread mainly depend on the pathological grade (determined by observing the morphology of the tumor under a microscope). The purpose of this study is to use artificial…

图像与视频处理 · 电气工程与系统科学 2022-05-02 Liangrui Pan , Hetian Wang , Lian Wang , Boya Ji , Mingting Liu , Mitchai Chongcheawchamnan , Jin Yuan , Shaoliang Peng

Autism Spectrum Disorder(ASD) is a set of neurodevelopmental conditions that affect patients' social abilities. In recent years, many studies have employed deep learning to diagnose this brain dysfunction through functional MRI (fMRI).…

图像与视频处理 · 电气工程与系统科学 2021-10-26 Li Pan , Jundong Liu , Mingqin Shi , Chi Wah Wong , Kei Hang Katie Chan

Phase aberration is one of the primary sources of image quality degradation in ultrasound, which is induced by spatial variations in sound speed across the heterogeneous medium. This effect disrupts transmitted waves and prevents coherent…

图像与视频处理 · 电气工程与系统科学 2023-05-18 Mostafa Sharifzadeh , Habib Benali , Hassan Rivaz

Accurate sound localization in a reverberation environment is essential for human auditory perception. Recently, Convolutional Neural Networks (CNNs) have been utilized to model the binaural human auditory pathway. However, CNN shows…

声音 · 计算机科学 2024-08-08 Sheng Kuang , Jie Shi , Kiki van der Heijden , Siamak Mehrkanoon

Photoacoustic (PA) image reconstruction involves acoustic inversion that necessitates the specification of the speed of sound (SoS) within the medium of propagation. Due to the lack of information on the spatial distribution of the SoS…

图像与视频处理 · 电气工程与系统科学 2024-06-05 Mengjie Shi , Tom Vercauteren , Wenfeng Xia

We present a simple and effective method to eliminate system aberrations and speckle noise in quantitative phase imaging. Using spiral integration, complete information about system aberration is calculated from three laterally shifted…

生物物理 · 物理学 2018-02-14 Inhyeok Choi , Kyeoreh Lee , YongKeun Park

Ultrasound (US) imaging is one of the most commonly used non-invasive imaging techniques. However, US image acquisition requires simultaneous guidance of the transducer and interpretation of images, which is a highly challenging task that…

计算机视觉与模式识别 · 计算机科学 2020-07-14 Simona Treivase , Alberto Gomez , Jacqueline Matthew , Emily Skelton , Julia A. Schnabel , Nicolas Toussaint

Light scattering in inhomogeneous media induces wavefront distortions which pose an inherent limitation in many optical applications. Examples range from microscopy and nanosurgery to astronomy. In recent years, ongoing efforts have made…

光学 · 物理学 2015-05-20 Ori Katz , Yaron Bromberg , Eran Small , Yaron Silberberg

Ultrasound offers a radiation-free, cost-effective solution for real-time visualization of spinal landmarks, paraspinal soft tissues and neurovascular structures, making it valuable for intraoperative guidance during spinal procedures.…

计算机视觉与模式识别 · 计算机科学 2025-11-20 Miruna-Alexandra Gafencu , Yordanka Velikova , Nassir Navab , Mohammad Farid Azampour

Trustworthy deployment of deep learning medical imaging models into real-world clinical practice requires that they be calibrated. However, models that are well calibrated overall can still be poorly calibrated for a sub-population,…

图像与视频处理 · 电气工程与系统科学 2023-07-21 Changjian Shui , Justin Szeto , Raghav Mehta , Douglas L. Arnold , Tal Arbel

Attosecond transient-absorption spectroscopy (ATAS) is an established method for exploring electron dynamics on the subfemtosecond time-scale. ATAS spectra contain certain ubiquitous features, such as oscillating fringes, light-induced…

原子物理 · 物理学 2017-08-02 Jørgen Johansen Rørstad , Jens E. Bækhøj , Lars Bojer Madsen

Self-supervised pre-training paradigm has gained increasing prominence for learning transferable representations in medical imaging, yet existing methods for ultrasound (US) images operate at the image or frame level, overlooking the…

计算机视觉与模式识别 · 计算机科学 2026-05-26 Chunzheng Zhu , Yijun Wang , Jianxin Lin , Feng Wang , Hongwei Wang , Lei Zhao , Shengli Li , Kenli Li

We present a laser scanning reflection-matrix microscopy combining the scanning of laser focus and the wide-field mapping of the electric field of the backscattered waves for eliminating higher-order aberrations even in the presence of…

生物物理 · 物理学 2019-10-11 Seokchan Yoon , Hojun Lee , Jin Hee Hong , Yong-Sik Lim , Wonshik Choi

Deep-tissue optical imaging is a longstanding challenge limited by scattering. Both optical imaging and treatment can benefit from focusing light in deep tissue beyond one transport mean free path. Wavefront shaping based on time-reversed…

光学 · 物理学 2020-12-09 Juze Zhang , Zijian Gao , Xiaopeng Yu , Peng Ge , Feng Gao , Fei Gao