Results 21 to 30 of about 286,343 (348)

Three‐dimensional Doppler‐associated radar imaging method based on bi‐directional data processing

IET Radar, Sonar & Navigation, 2022
Using a microwave or millimetre wave radar system, this study aims to achieve highly accurate Doppler velocity estimation and radar imaging that would be suitable for various remote‐sensing sensors, such as self‐driving, surveillance, or security ...
Takumi Hayashi, Takeru Ando, Shouhei Kidera   +2 more
doaj   +1 more source

Longitudinal volumetric assessment of inflammatory arthritis via photoacoustic imaging and Doppler ultrasound imaging

Photoacoustics, 2023
Aiming at clinical translation, we developed an automatic 3D imaging system combining the emerging photoacoustic imaging with conventional Doppler ultrasound for detecting inflammatory arthritis.
Xiaorui Peng, Zhanpeng Xu, Aaron Dentinger, Shivangi Kewalramani, Janggun Jo, Guan Xu, David Chamberland, Nada Abdulaziz, Girish Gandikota, David Mills, Xueding Wang   +10 more
doaj   +1 more source

Automated Fovea Detection in Spectral Domain Optical Coherence Tomography Scans of Exudative Macular Disease

International Journal of Biomedical Imaging, 2016
In macular spectral domain optical coherence tomography (SD-OCT) volumes, detection of the foveal center is required for accurate and reproducible follow-up studies, structure function correlation, and measurement grid positioning.
Jing Wu, Sebastian M. Waldstein, Alessio Montuoro, Bianca S. Gerendas, Georg Langs, Ursula Schmidt-Erfurth   +5 more
doaj   +1 more source

Super-Resolution 1H Magnetic Resonance Spectroscopic Imaging Utilizing Deep Learning

Frontiers in Oncology, 2019
Magnetic resonance spectroscopic imaging (SI) is a unique imaging technique that provides biochemical information from in vivo tissues. The 1H spectra acquired from several spatial regions are quantified to yield metabolite concentrations reflective of ...
Zohaib Iqbal, Dan Nguyen, Gilbert Hangel, Stanislav Motyka, Wolfgang Bogner, Steve Jiang   +5 more
doaj   +1 more source

Multivendor Spectral-Domain Optical Coherence Tomography Dataset, Observer Annotation Performance Evaluation, and Standardized Evaluation Framework for Intraretinal Cystoid Fluid Segmentation

Journal of Ophthalmology, 2016
Development of image analysis and machine learning methods for segmentation of clinically significant pathology in retinal spectral-domain optical coherence tomography (SD-OCT), used in disease detection and prediction, is limited due to the availability
Jing Wu, Ana-Maria Philip, Dominika Podkowinski, Bianca S. Gerendas, Georg Langs, Christian Simader, Sebastian M. Waldstein, Ursula M. Schmidt-Erfurth   +7 more
doaj   +1 more source

Principles of Doppler ultrasound and emerging blood flow imaging [PDF]

Ultrasonography
Doppler ultrasound is one of the oldest modalities for measuring and visualizing blood flow. This review paper explores the principles of Doppler ultrasound and blood flow imaging.
Dong-Guk Paeng, Cheong-Ah Lee, Cynthia Imtiaz   +2 more
doaj   +1 more source

Unambiguous ISAR Imaging Method for Complex Maneuvering Group Targets

Remote Sensing, 2022
In inverse synthetic-aperture radar (ISAR) imaging, it is essential to deal with the Doppler ambiguity of group targets with complex maneuvers in order to avoid the bias of target position towards the actual value.
Fengkai Liu, Darong Huang, Xinrong Guo, Cunqian Feng   +3 more
doaj   +1 more source

A RPCA-Based ISAR Imaging Method for Micromotion Targets

Sensors, 2020
Micro-Doppler generated by the micromotion of a target contaminates the inverse synthetic aperture radar (ISAR) image heavily. To acquire a clear ISAR image, removing the Micro-Doppler is an indispensable task.
Liangyou Lu, Peng Chen, Lenan Wu
doaj   +1 more source

ULTRASOUND CRITERIA OF EARLY DIAGNOSTICS OF OVARIAN CARCINOMA

Опухоли женской репродуктивной системы, 2015
Introduction. Ovarian cancer (OC) in Russia is ranked the seventh within the structure of general cancer diseases and the third within the gynecological tumors, due to such reasons the problem of early diagnostics is still actual.
L. A. Ashrafyan, N. A. Babaeva, I. B. Antonova, S. V. Ivashina, A. V. Lyustik, O. I. Aleshikova, E. V. Gerfanova, А. А. Dobrenko   +7 more
doaj   +1 more source

Early Pregnancy Fetal Cardiac Activity Detection by Superb Micro-Vascular Imaging (cSMI) Comparing with Color Doppler Ultrasound

Pakistan Armed Forces Medical Journal, 2023
Objective: To observe the sonographic advancement of the Doppler technique Superb Microvascular imaging (cSMI) for detecting fetal cardiac activity (FCA) in early pregnancy when not detected on grey scale ultrasound and conventional Doppler.
Riffat Masud, Faisal Khurshid, Ghazal Jameel, Mussarat Ashraf   +3 more
doaj   +1 more source