Results 11 to 20 of about 2,981,746 (247)

Developments in target micro-doppler signatures analysis: radar imaging, ultrasound and through-the-wall radar [PDF]

open access: yes, 2013
Target motions, other than the main bulk translation of the target, induce Doppler modulations around the main Doppler shift that form what is commonly called a target micro-Doppler signature.
Soraghan, J. J.   +5 more
core   +5 more sources

Tissue Doppler imaging following paediatric cardiac surgery : early patterns of change and relationship to outcome [PDF]

open access: yes, 2009
In this study, tissue Doppler imaging (TDI) was used to assess changes in ventricular function following repair of congenital heart defects. The relationship between TDI indices, myocardial injury and clinical outcome was explored.
MacArthur, Kenneth   +8 more
core   +4 more sources

Investigation into the selection of viewing configurations for three-component planar Doppler velocimetry measurements. [PDF]

open access: yes, 2007
A method for the calculation of three orthogonal velocity components in planar Doppler velocimetry (PDV) using four or more measured velocity components (to the three typically used) is presented.
Nobes, David S.   +2 more
core   +7 more sources

WAMDII: wide-angle Michelson Doppler imaging interferometer for Spacelab [PDF]

open access: yes, 1985
A wide-angle Michelson Doppler imaging interferometer (WAMDII) is described that is intended to measure upper atmospheric winds and temperatures from naturally occurring visible region emissions, using Spacelab as a platform.
Gault, W.A.   +8 more
core   +1 more source

Dual Illumination Planar Doppler Velocimetry using a Single Camera [PDF]

open access: yes, 2003
A Planar Doppler Velocimetry (PDV) illumination system has been designed which is able to generate two beams, separated in frequency by about 600 MHz. This allows a common-path imaging head to be constructed, using a single imaging camera instead of ...
Nobes, David S.   +7 more
core   +1 more source

3D planar velocity measurements, using Mach-Zehnder interferometric-filter-based planar Doppler velocimetry (MZI-PDV) and imaging fibre bundles [PDF]

open access: yes, 2008
Three component planar flow-field measurements are made using imaging fibre bundles to port different views of the measurement plane, defined by a laser light sheet, to a single imaging head.
Charrett, Thomas O. H.   +7 more
core   +1 more source

Guidelines for ultrasound examination in ophthalmology. Part III: Color Doppler ultrasonography

open access: yesJournal of Ultrasonography, 2019
The aim of this article was to present the possibilities of use and application of color-coded Doppler ultrasonography in the diagnosis of various diseases of the eyeball and orbit which result from vascular disorders. Color-coded Doppler ultrasonography
Monika Modrzejewska
doaj   +1 more source

Ultrasound and Color Doppler Flow Imaging of Paratesticular Leiomyoma [PDF]

open access: yesAdvanced Ultrasound in Diagnosis and Therapy, 2022
ObjectiveIn this paper, we retrospectively analyzed the ultrasonographic features of paratesticular leiomyoma to help doctors correctly diagnose the disease before operation and guide surgical treatment.
Nianyu Xue, MM, Yaya Chen, MD, Guoyao Wang, BS, Shengmin Zhang, BS
doaj   +1 more source

Imaging of blood flow and oxygen state with a multi-segment optoacoustic ultrasound array

open access: yesPhotoacoustics, 2018
Changes in hemodynamic parameters are directly linked to biological function and physiological activity. Characterization of hemodynamics is commonly performed by Doppler ultrasound, which provides accurate measurements of blood flow velocity.
Elena Merčep   +2 more
doaj   +1 more source

Pilomatrixoma of the right thigh: Sonographic-pathologic correlation in a young man

open access: yesRadiology Case Reports, 2020
Pilomatrixoma, also known as calcifying epithelioma of Malherbe, is a histological type of benign subcutaneous tumor arising from the cutaneous adnexa. We present our experience and the characteristic findings of a pilomatrixoma of the right thigh in a ...
Maria Adele Marino, MD   +4 more
doaj   +1 more source

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