Results 11 to 20 of about 365,426 (318)

Site dependence of ultrasonically induced electrical potentials in bone [PDF]

open access: yesJASA Express Letters, 2021
The success rate of low-intensity pulsed ultrasound (LIPUS) therapy depends on the bone site. However, the initial mechanism of physical stimulation by ultrasound and bone cellular response remains unclear.
Tsukasa Nakamura   +4 more
doaj   +1 more source

Contrast-enhanced ultrasound improves the potency of fine-needle aspiration in thyroid nodules with high inadequate risk

open access: yesBMC Medical Imaging, 2022
Background This study aims to determine the clinical value of contrast enhanced ultrasound (CEUS) for fine-needle aspiration (FNA) of high inadequate risky thyroid nodules.
Tinghui Yin   +8 more
doaj   +1 more source

Design and Manufacture of an Optimised Side-Shifted PPM EMAT Array for Use in Mobile Robotic Localisation

open access: yesSensors, 2023
Guided wave Electro Magnetic Acoustic Transducers (EMATs) offer an elegant method for structural inspection and localisation relative to geometric features, such as welds. This paper presents a Lorentz force EMAT construction framework, where a numerical
Ross McMillan   +6 more
doaj   +1 more source

Alterations in Immune Response Profile of Tumor-Draining Lymph Nodes after High-Intensity Focused Ultrasound Ablation of Breast Cancer Patients

open access: yesCells, 2021
Previous studies have revealed that high-intensity focused ultrasound (HIFU) ablation can trigger an antitumor immune response. The aim of this study was to investigate immune response in tumor-draining lymph nodes (TDLNs) after HIFU treatment.
Xue-Qiang Zhu   +6 more
doaj   +1 more source

Advances in ultrasonic welding of lightweight alloys: A review

open access: yesHigh Temperature Materials and Processes, 2023
The lightweight alloy sheet materials have been widely used in industries such as automobiles, aviation, and aerospace. However, there are huge challenges in the structural joining process.
Abbas Zeshan   +4 more
doaj   +1 more source

Ultrasonic Methods [PDF]

open access: yes, 2021
AbstractUltrasonic inspection is a well recognized technique for non-destructive testing of aircraft components. It provides both local highly sensitive inspection in the vicinity of the sensor and long-range structural assessment by means of guided waves.
Samaitis, Vykintas   +3 more
openaire   +2 more sources

Performance of spleen stiffness measurement by 2D-shear wave elastography in evaluating the presence of high-risk varices: comparative analysis of idiopathic portal hypertension versus hepatitis B virus

open access: yesBMC Medical Imaging, 2023
Background Noninvasive assessment of high-risk varices (HRV) in idiopathic portal hypertension (IPH) is rare. The purpose of this study was to investigate the performance of spleen stiffness (SS) for evaluating the presence of HRV in IPH patients as ...
Huihui Zhou   +8 more
doaj   +1 more source

A Novel Broadband Ultrasonic Location System [PDF]

open access: yes, 2002
Indoor ultrasonic location systems provide ne-grained position data to ubiquitous computing applications. However, the ultrasonic location systems previously developed utilize narrowband transducers, and thus perform poorly in the presence of noise and ...
Ward, Andy   +3 more
core   +1 more source

Congenital absence of the left pericardium: a case report

open access: yesBMC Cardiovascular Disorders, 2023
Background Congenital absence of the pericardium (CAP) is rare in clinical practice, the symptoms vary among patients, and most doctors do not have enough knowledge of the condition. Most reported CAP cases are incidental findings.
Xiang-Yi Li   +4 more
doaj   +1 more source

An Ultrasonic Sensor for Distance Measurement in Automotive Applications [PDF]

open access: yes, 2001
This paper describes an ultrasonic sensor that is able to measure the distance from the ground of selected points of a motor vehicle. The sensor is based on the measurement of the time of flight of an ultrasonic pulse, which is reflected by the ground. A
Parvis, Marco, Carullo, Alessio
core   +1 more source

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