Results 71 to 80 of about 1,304,433 (350)

Doppler sonography of the uterine and the cubital arteries in normal pregnancies, preeclampsia and intrauterine growth restriction: evidence for a systemic vessel involvement [PDF]

, 2006
Aims: The decrease in uterine resistance during normal pregnancy is known to be related to invading trophoblast cells which derive from placental tissue. Uterine and peripheral resistance is elevated in preeclampsia.
Friese, Klaus, Jundt, Katharina, Kainer, Franz, Oberhoffer, Renate, Schiessl, Barbara   +4 more
core   +1 more source

Ultrasound‐Triggered Nanobubbles for Endothelial‐Targeted Drug Delivery in the Detection and Treatment of Doxorubicin‐Induced Cardiotoxicity

Advanced Healthcare Materials, EarlyView.
The DA/VTP‐NBs selectively recognized cardiac ECs damaged by DIC and achieved cell‐level targeted imaging. Then US‐triggered controlled release successfully enabled the release of DAPA within the DA/VTP‐NBs at the site of injury. This precise on‐demand drug release approach amplifies a series of localized therapeutic effects through the mtDNA‐mediated ...
Jun Zhang, Yi Ling, Xin Li, Deng Liu, Li Dong, Xuemei Chen, Yingxin Sun, Yongning Shang, Yanli Guo   +8 more
wiley   +1 more source

An Analysis of Resting-State Functional Transcranial Doppler Recordings from Middle Cerebral Arteries [PDF]

, 2013
Functional transcrannial Doppler (fTCD) is used for monitoring the hemodynamics characteristics of major cerebral arteries. Its resting-state characteristics are known only when considering the maximal velocity corresponding to the highest Doppler shift (
A Lempel, A Porta, A Porta, AJB Myrden, AS Salinet, AV Alexandrov, B Rey, B Rey, Dmitry Kalika, E Sejdić, E Sejdić, EM Vriens, Ervin Sejdić, Friedemann Paul, H Lohmann, HB Mann, J Krejza, J Lee, M Aboy, M Deppe, M Marinoni, M Matteis, M Moody, N Stroobant, Nicholas Czarnek, OB Paulson, PJ Martin, R Aaslid, RC Oldfield, RE Kelley, S Duschek, S Duschek, S Knake, S Knecht, S Ogawa, TM Markwalder, WH Kruskal   +36 more
core   +3 more sources

Up-to-date Doppler techniques for breast tumor vascularity: superb microvascular imaging and contrast-enhanced ultrasound

Ultrasonography, 2017
Ultrasonographic Doppler techniques have improved greatly over the years, allowing more sophisticated evaluation of breast tumor vascularity. Superb microvascular imaging (SMI) and contrast-enhanced ultrasound (CEUS) with second-generation contrast ...
Ah Young Park, B. Seo
semanticscholar   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

Non-contrast ultrasound assessment of blood flow in clinical practice

Journal of Ultrasonography
Since the first clinical use of ultrasound in the 1940s, significant advancements have been made in its applications. Color Doppler imaging and power Doppler imaging are considered the first and second generations of flow ultrasound assessment tools ...
Babington Emmanuel Abiola, Amedu Cletus, Anyasor Ebuka, Reeve Ruth   +3 more
doaj   +1 more source

Preoperative Location Of Parathyroid Adenomas In Primary Hyperparathyroidism: The Role of Cervical Doppler Ultrasound

Acta Médica Portuguesa, 2022
Introduction: Parathyroid adenoma is the most frequent cause of primary hyperparathyroidism. In recent years, the preoperative location of parathyroid adenomas allowed minimally invasive surgical techniques that have become preferred over the ...
Sara Amaral, Teresa Rego, Ana Palha, Nuno Carrilho, José Mário Coutinho, Paula Tavares, José Silva-Nunes   +6 more
doaj   +1 more source

One year in review: ultrasound in arthritis [PDF]

, 2016
Musculoskeletal ultrasound (MSUS) has become a relevant part of rheumatology practice and research because it substantially allows us to optimize management of rheumatic and musculoskeletal diseases. This non-invasive imaging modality is a valuable point-
IAGNOCCO, Annamaria, Naredo, Esperanza
core  

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

Advanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha, Bilguun Nurzed, Mostafa Berangi, Andre Kuehne, Helmar Waiczies, Igor Fabian Tellez Ceja, Xiang Hu, Thomas Gladytz, Lisa Krenz, Dave Huebler, Beate Endemann, Claudia Brockmann, Ebba Beller, Oliver Stachs, Thoralf Niendorf   +14 more
wiley   +1 more source

Characterization of Droplet Formation in Ultrasonic Spray Coating: Influence of Ink Formulation Using Phase Doppler Anemometry and Machine Learning

Advanced Materials Technologies, EarlyView.
This study explores how machine learning models, trained on small experimental datasets obtained via Phase Doppler Anemometry (PDA), can accurately predict droplet size (D32) in ultrasonic spray coating (USSC). By capturing the influence of ink complexity (solvent, polymer, nanoparticles), power, and flow rate, the model enables precise droplet control
Pieter Verding, Danny E. P. Vanpoucke, Yunus T. Aksoy, Tobias Corthouts, Maria R. Vetrano, Wim Deferme   +5 more
wiley   +1 more source