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Photoacoustic tomography is an emerging medical imaging technology whose primary aim is to map the high-contrast optical properties of biological tissues by leveraging high-resolution ultrasound measurements. Mathematically, this can be…

偏微分方程分析 · 数学 2025-02-14 Alessandro Felisi

Fetal ultrasounds are an essential part of prenatal care and can be used to estimate gestational age (GA). Accurate GA assessment is important for providing appropriate prenatal care throughout pregnancy and identifying complications such…

Quantitative photoacoustic computed tomography (qPACT) is a promising imaging modality for estimating physiological parameters such as blood oxygen saturation. However, developing robust qPACT reconstruction methods remains challenging due…

医学物理 · 物理学 2025-10-07 Refik Mert Cam , Seonyeong Park , Umberto Villa , Mark A. Anastasio

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

Point-of-care ultrasound (POCUS) is one of the most commonly applied tools for cardiac function imaging in the clinical routine of the emergency department and pediatric intensive care unit. The prior studies demonstrate that AI-assisted…

图像与视频处理 · 电气工程与系统科学 2022-12-20 Zhenge Jia , Yiyu Shi , Jingtong Hu , Lei Yang , Benjamin Nti

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

Dynamic Photoacoustic Computed Tomography (PACT) is an important imaging technique for monitoring physiological processes, capable of providing high-contrast images of optical absorption at much greater depths than traditional optical…

图像与视频处理 · 电气工程与系统科学 2025-06-05 Youshen Xiao , Yiling Shi , Ruixi Sun , Hongjiang Wei , Fei Gao , Yuyao Zhang

Photoacoustic tomography (PAT) is a newly developed medical imaging modality, which combines the advantages of pure optical imaging and ultrasound imaging, owning both high optical contrast and deep penetration depth. Very recently, PAT is…

医学物理 · 物理学 2021-09-21 Tengbo Lyu , Jiadong Zhang , Zijian Gao , Changchun Yang , Feng Gao , Fei Gao

In this work, we identify three considerations that are essential for realizing practical photonic AI systems at scale: (1) dynamic tensor operation support for modern models rather than only weight-static kernels, especially for…

Image sensors are the backbone of many imaging technologies of great importance to modern sciences, being particularly relevant in biomedicine. An ideal image sensor should be usable through all the electromagnetic spectrum (large…

医学物理 · 物理学 2022-03-16 Juan Aguirre

Non-invasively focusing light into strongly scattering media, such as biological tissue, is highly desirable but challenging. Recently, wavefront shaping technologies guided by ultrasonic encoding or photoacoustic sensing have been…

光学 · 物理学 2014-02-05 Puxiang Lai , Lidai Wang , Jian Wei Tay , Lihong V. Wang

Modern photon-counting sensors are increasingly dominated by Poisson noise, yet conventional feature-specific imaging (FSI), based on principal component analysis (PCA), is optimized for additive Gaussian noise and variance preservation…

光学 · 物理学 2026-04-20 Yizhou Lu , Andreas Velten

Recent advances in photoacoustic (PA) imaging have enabled detailed images of microvascular structure and quantitative measurement of blood oxygenation or perfusion. Standard reconstruction methods for PA imaging are based on solving an…

信号处理 · 电气工程与系统科学 2020-04-17 MinWoo Kim , Geng-Shi Jeng , Ivan Pelivanov , Matthew O'Donnell

Artificial Intelligence (AI) has become commonplace to solve routine everyday tasks. Because of the exponential growth in medical imaging data volume and complexity, the workload on radiologists is steadily increasing. We project that the…

A significant challenge in image-guided surgery is the accurate measurement task of relevant structures such as vessel segments, resection margins, or bowel lengths. While this task is an essential component of many surgeries, it involves…

计算机视觉与模式识别 · 计算机科学 2023-11-17 Leopold Müller , Patrick Hemmer , Moritz Queisner , Igor Sauer , Simeon Allmendinger , Johannes Jakubik , Michael Vössing , Niklas Kühl

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

Elastographic imaging is a widely used technique which can in principle be implemented on top of every imaging modality. In elastography, the specimen is exposed to a force causing local displacements in the probe, and imaging is performed…

最优化与控制 · 数学 2014-07-28 Thomas Glatz , Otmar Scherzer , Thomas Widlak

Ultrasound plane wave imaging is a cutting-edge technique that enables high frame-rate imaging. However, one challenge associated with high frame-rate ultrasound imaging is the high noise associated with them, hindering their wider…

图像与视频处理 · 电气工程与系统科学 2024-08-21 Hojat Asgariandehkordi , Sobhan Goudarzi , Mostafa Sharifzadeh , Adrian Basarab , Hassan Rivaz

Photoacoustic (PA) computed tomography (PACT) shows great potentials in various preclinical and clinical applications. A great number of measurements are the premise that obtains a high-quality image, which implies a low imaging rate or a…

计算机视觉与模式识别 · 计算机科学 2021-06-01 Hengrong Lan , Juze Zhang , Changchun Yang , Fei Gao

Advances in imaging technologies have revolutionised the medical imaging and healthcare sectors, leading to the widespread adoption of PACS for the storage, retrieval, and communication of medical images. Although these systems have…

人机交互 · 计算机科学 2024-12-20 Diogo Lameira , Filipa Ferraz