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Speed-of-sound has been shown as a potential biomarker for breast cancer imaging, successfully differentiating malignant tumors from benign ones. Speed-of-sound images can be reconstructed from time-of-flight measurements from ultrasound…

图像与视频处理 · 电气工程与系统科学 2020-07-23 Melanie Bernhardt , Valery Vishnevskiy , Richard Rau , Orcun Goksel

Spectral computed tomography (CT) is an emerging technology capable of providing high chemical specificity, which is crucial for many applications such as detecting threats in luggage. This type of application requires both fast and…

图像与视频处理 · 电气工程与系统科学 2021-03-30 Wail Mustafa , Christian Kehl , Ulrik Lund Olsen , Søren Kimmer Schou Gregersen , David Malmgren-Hansen , Jan Kehres , Anders Bjorholm Dahl

Chest radiographs are used for the diagnosis of multiple critical illnesses (e.g., Pneumonia, heart failure, lung cancer), for this reason, systems for the automatic or semi-automatic analysis of these data are of particular interest. An…

图像与视频处理 · 电气工程与系统科学 2022-05-10 Declan McIntosh , Tunai Porto Marques , Alexandra Branzan Albu

GPR full-waveform inversion optimizes the subsurface property model iteratively to match the entire waveform information. However, the model gradients derived from wavefield continuation often contain errors, such as ghost values and…

地球物理 · 物理学 2024-10-14 Peng Jiang , Kun Wang , Jiaxing Wang , Zeliang Feng , Shengjie Qiao , Runhuai Deng , Fengkai Zhang

Computed tomography (CT) is a widely used medical imaging technique to scan internal structures of a body, typically involving collimation and mechanical rotation. Compton scatter tomography (CST) presents an interesting alternative to…

图像与视频处理 · 电气工程与系统科学 2024-06-06 Ishak Ayad , Cécilia Tarpau , Javier Cebeiro , Maï K. Nguyen

Deep learning, especially convolutional neural networks (CNNs) and Transformer architectures, have become the focus of extensive research in medical image segmentation, achieving impressive results. However, CNNs come with inductive biases…

图像与视频处理 · 电气工程与系统科学 2024-09-20 Xiao Liu , Peng Gao , Tao Yu , Fei Wang , Ru-Yue Yuan

A tomographic technique called full-waveform inversion has recently shown promise as a fast, affordable, and safe modality to image the brain using ultrasound. However, its high computational cost and memory footprint currently limit its…

医学物理 · 物理学 2021-11-09 Letizia Protopapa , Carlos Cueto

Ultrasound (US) imaging is better suited for intraoperative settings because it is real-time and more portable than other imaging techniques, such as mammography. However, US images are characterized by lower spatial resolution noise-like…

图像与视频处理 · 电气工程与系统科学 2023-08-11 Sahar Almahfouz Nasser , Ashutosh Sharma , Anmol Saraf , Amruta Mahendra Parulekar , Purvi Haria , Amit Sethi

Mammography screening for early detection of breast lesions currently suffers from high amounts of false positive findings, which result in unnecessary invasive biopsies. Diffusion-weighted MR images (DWI) can help to reduce many of these…

Quantitative speed-of-sound (SoS) and attenuation of tissues are closely related to pathology; however, conventional B-mode images are limited to qualitative visualization. Existing ultrasound full-waveform inversion (FWI) methods for…

信号处理 · 电气工程与系统科学 2026-04-20 Rui Guo , Ditza Auerbach , Yonina C. Eldar

Breast cancer remains a leading cause of cancer-related mortality among women worldwide. Ultrasound imaging, widely used due to its safety and cost-effectiveness, plays a key role in early detection, especially in patients with dense breast…

计算机视觉与模式识别 · 计算机科学 2025-09-08 Mohammad Abbadi , Yassine Himeur , Shadi Atalla , Wathiq Mansoor

Breast lesion localization using tactile imaging is a new and developing direction in medical science. To achieve the goal, proper image reconstruction and image registration can be a valuable asset. In this paper, a new approach of the…

计算机视觉与模式识别 · 计算机科学 2019-10-16 Shuvendu Rana , Rory Hampson , Gordon Dobie

Automatic learning algorithms for improving the image quality of diagnostic B-mode ultrasound (US) images have been gaining popularity in the recent past. In this work, a novel convolutional neural network (CNN) is trained using time of…

信号处理 · 电气工程与系统科学 2021-08-18 Roshan P Mathews , Mahesh Raveendranatha Panicker

Full Waveform Inversion (FWI) is a technique widely used in geophysics to obtain high-resolution subsurface velocity models from waveform seismic data. Due to its large computation cost, most flavors of FWI rely only on the computation of…

地球物理 · 物理学 2024-03-27 Mustafa Alfarhan , Matteo Ravasi , Fuqiang Chen , Tariq Alkhalifah

Phased array ultrasound is a widely used technique in non-destructive testing. Using piezoelectric elements as both sources and receivers provides a significant gain in information and enables more accurate defect detection. When all…

计算工程、金融与科学 · 计算机科学 2026-01-13 Tim Bürchner , Simon Schmid , Lukas Bergbreiter , Ernst Rank , Stefan Kollmannsberger , Christian U. Grosse

Full-waveform inversion (FWI) is a high-resolution seismic imaging method that estimates subsurface velocity by matching simulated and recorded waveforms. However, FWI is highly nonlinear, prone to cycle skipping, and sensitive to noise,…

机器学习 · 计算机科学 2026-03-17 Xinquan Huang , Paris Perdikaris

Full-waveform inversion (FWI) is an accurate imaging approach for modeling velocity structure by minimizing the misfit between recorded and predicted seismic waveforms. However, the strong non-linearity of FWI resulting from fitting…

地球物理 · 物理学 2021-10-04 Weiqiang Zhu , Kailai Xu , Eric Darve , Biondo Biondi , Gregory C. Beroza

The data-driven approach has been demonstrated as a promising technique to solve complicated scientific problems. Full Waveform Inversion (FWI) is commonly epitomized as an image-to-image translation task, which motivates the use of deep…

机器学习 · 计算机科学 2021-11-30 Chengyuan Deng , Youzuo Lin

Convolutional neural networks (CNNs) have attracted a rapidly growing interest in a variety of different processing tasks in the medical ultrasound community. However, the performance of CNNs is highly reliant on both the amount and…

图像与视频处理 · 电气工程与系统科学 2021-09-23 Mostafa Sharifzadeh , Habib Benali , Hassan Rivaz

Ultrasonic imaging methods often assume linear direct models, while in reality, many nonlinear phenomena are present, e.g. multiple reflections. A family of imaging methods called Full Waveform Inversion (FWI), which has been developed in…

信号处理 · 电气工程与系统科学 2026-04-23 Daniel Rossato , Thiago Alberto Rigo Passarin , Gustavo Pinto Pires , Daniel Rodrigues Pipa