Results 41 to 50 of about 173,652 (295)
Ultrasonic Synthetic-Aperture Interface Imaging [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2019 Synthetic-aperture (SA) imaging is a popular method to visualize the reflectivity of an object from ultrasonic reflections. The method yields an image of the (volume) contrast in acoustic impedance with respect to the embedding. Typically, constant mass density is assumed in the underlying derivation. Due to the band-limited nature of the recorded data,
Joost van der Neut +6 more
openaire +4 more sources
Performance of periodic piezoelectric composite arrays incorporating a passive phase exhibiting anisotropic properties [PDF]
, 2005 This paper explores the minimisation of interelement cross talk in 1-D and 2-D periodic composite array structures through the incorporation of a passive phase exhibiting anisotropic elastic properties.
Hayward, G. +4 more
core +1 more source
Transthoracic Ultrasound Evaluation of Pulmonary Changes in COVID-19 Patients During Treatment Using Modified Protocols [PDF]
Advanced Ultrasound in Diagnosis and Therapy, 2020 Objective: To investigate the feasibility of evaluating imaging changes pre-and post-treatment in Corona Virus Disease 2019 (COVID-19) patients by transthoracic pulmonary ultrasound.Methods: A total of 8 patients diagnosed with severe or critical COVID ...
Guorong Lyu, MD, Ying Zhang, MD, Guoliang Tan, MD
doaj +1 more source
Thermographic non-destructive evaluation for natural fiber-reinforced composite laminates [PDF]
, 2018 Natural fibers, including mineral and plant fibers, are increasingly used for polymer composite materials due to their low environmental impact. In this paper, thermographic non-destructive inspection techniques were used to evaluate and characterize ...
Avdelidis, Nicolas P. +7 more
core +3 more sources
Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen +23 more
wiley +1 more source
Total focussing method for volumetric imaging in immersion non destructive evaluation [PDF]
, 2007 This paper describes the use of a 550 (25x22) element 2MHz 2D piezoelectric composite array in immersion mode to image an aluminum test block containing a collection of artificial defects.
Drinkwater, B. +6 more
core +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background L‐asparaginase is a critical component in treatment protocols for pediatric acute lymphoblastic leukemia. Acute pancreatitis reactions can necessitate delays and, in some cases, discontinuation of L‐asparaginase, which compromises outcomes.
Edward J. Raack +39 more
wiley +1 more source
International Journal of Distributed Sensor Networks, 2021 Ultrasonic computerized tomography is a promising technique for damage detection by enabling ultrasonic waves via multiple measurement paths leading to accurate localization of structural damage. Unlike traditional ultrasonic computerized tomography that
Binbin Li +5 more
doaj +1 more source
Ultrasonic sensor for imaging measurement techniques [PDF]
, 2016 Generally, are many methods for imaging measurement techniques, traditional and modern method and still have pros and cons between these two ways. Basically, the traditional techniques method is reported does not fully meet the specification of modern ...
Abdul Rahim, Ruzairi +4 more
core
Improving elevation resolution in phased-array inspections for NDT [PDF]
, 2019 The Phased Array Ultrasonic Technique (PAUT) offers great advantages over the conventional ultrasound technique (UT), particularly because of beam focusing, beam steering and electronic scanning capabilities.
Brizuela, Jose David +4 more
core +1 more source