Results 11 to 20 of about 132,352,308 (329)
Atherosclerotic Lesions in the Superficial Femoral Artery (SFA) Characterized with Velocity Ratios using Vector Velocity Ultrasound [PDF]
Ultrasound International Open, 2018 Purpose Atherosclerotic arteries are challenging to evaluate quantitatively using spectral Doppler ultrasound because of the turbulent flow conditions that occur in relation to the atherosclerotic stenoses. Vector velocity ultrasound is angle independent
Peter Møller Hansen +6 more
doaj +2 more sources
New Technology – Demonstration of a Vector Velocity Technique [PDF]
Ultraschall in der Medizin - European Journal of Ultrasound, 2011 With conventional Doppler ultrasound it is not possible to estimate direction and velocity of blood flow, when the angle of insonation exceeds 60-70°. Transverse oscillation is an angle independent vector velocity technique which is now implemented on a conventional ultrasound scanner.
Møller Hansen, Peter +4 more
openaire +4 more sources
Optoelectrical Method of Measuring the Aircraft Track Velocity Vector [PDF]
Radioengineering, 1992 This article deals with new principal and basic algorithm of the optoelectronics measuring method of aircraft track velocity vector using digital processing of video signals of CCD line sensors.
J. Mikulec, V. Ricny
doaj +2 more sources
DEVELOPMENT OF THE VELOCITY VECTOR INDICATION AT HUD AT LANDING MODE ON THE GROUND-BASED SIMULATOR
Научный вестник МГТУ ГА, 2016 Velocity vector indication at HUD is effective technique for fulfilling carrier landing and landing on short runway. The command glide slope value and carrier velocity are added to traditional algorithm of the velocity vector indication.
K. V. Zakharov +2 more
doaj +1 more source
Measurement of Reference Bubble Velocity Vector for a Local 4 Sensor Probe Using Orthogonal High Speed Cameras [PDF]
, 2007 In recent years, there has been an increase in the level of interest shown in making flow rate measurements in multiphase flow. This in part has been brought about by the metering requirements of the oil and natural gas industries.
Lucas, Gary, Pradhan, Suman, Zhao, X.
core +4 more sources
Performance of a vector velocity estimator [PDF]
, 1998 It is a well-known limitation of all commercially available scanners that only the velocity component along the propagation direction of the emitted pulse is measured, when evaluating blood velocities with ultrasound. Proposals for solving this limitation using several transducers or speckle tracking can be found in the literature, but no method with a
Munk, Peter +1 more
openaire +3 more sources
BeamsNet: A data-driven Approach Enhancing Doppler Velocity Log Measurements for Autonomous Underwater Vehicle Navigation [PDF]
Engineering applications of artificial intelligence, 2022 Autonomous underwater vehicles (AUV) perform various applications such as seafloor mapping and underwater structure health monitoring. Commonly, an inertial navigation system aided by a Doppler velocity log (DVL) is used to provide the vehicle's ...
N. Cohen, I. Klein
semanticscholar +1 more source
A Velocity Meter for Quantifying Advection Velocity Vectors in Large Water Bodies [PDF]
Sensors, 2020 A velocity meter was designed and built in order to meet market needs for an affordable instrument that measures the range of velocity magnitudes and direction experienced in medium- to large-sized water bodies. The velocity meter consists of a graduated plate with an injector protruding from the center and a camera held downward above the plate.
Farzam Allafchi +6 more
openaire +4 more sources
Photonics, 2022 The non-linearly curved coastal zone is very long and wide. The traditional satellite can’t cover the whole coastal zone in a single scan. So, the method of matching imaging combining the adjustment of satellite attitude and the scanning of the swing ...
Jiamin Du +5 more
doaj +1 more source
Nature, 2018 RNA abundance is a powerful indicator of the state of individual cells. Single-cell RNA sequencing can reveal RNA abundance with high quantitative accuracy, sensitivity and throughput1. However, this approach captures only a static snapshot at a point in
Gioele La Manno +22 more
semanticscholar +1 more source