Fourier f-k migration for plane wave ultrasound imaging: Theoretical framework

2012 ◽  
Author(s):  
Louis Le Tarnec ◽  
Stephan Muth ◽  
Emmanuel Montagnon ◽  
Jonathan Poree ◽  
Guy Cloutier ◽  
...  
Keyword(s):  
Plane Wave ◽  
Ultrasound Imaging ◽  
Theoretical Framework

Deep Learning Based Angular Compounding for Accelerated Plane Wave Ultrasound Imaging

2021 ◽  
Author(s):  
Hannah Strohm ◽  
Sven Rothlubbers ◽  
Jurgen Jenne ◽  
Matthias Gunther
Keyword(s):  
Deep Learning ◽  
Plane Wave ◽  
Ultrasound Imaging

Erratum: experimental evaluation of spectral-based quantitative ultrasound imaging using plane wave compounding [Nov 14 1824-1834]

2014 ◽  
Vol 61 (12) ◽  
pp. 2158-2158
Author(s):  
Sebastien Salles ◽  
Hervé Liebgott ◽  
Olivier Basset ◽  
Christian Cachard ◽  
Didier Vray ◽  
...  
Keyword(s):  
Plane Wave ◽  
Ultrasound Imaging ◽  
Quantitative Ultrasound ◽  
Experimental Evaluation

The motion and structure of dislocations in wavefronts

1981 ◽  
Vol 378 (1773) ◽  
pp. 219-239 ◽  
Keyword(s):  
Plane Wave ◽  
Phase Structure ◽  
General Type ◽  
Dislocation Line ◽  
Theoretical Framework ◽  
Time Of Arrival ◽  
Scalar Wave ◽  
Local Phase ◽  
Radial Line ◽  
Line Singularities

Scattered scalar wavefields contain line singularities where the phase of the wave is indeterminate and the amplitude is zero. Unless the wave is monochromatic, these dislocation lines, which are analogous to crystal dislocations, move along trajectory surfaces, changing their positions relative to the wave by glide and climb. The edge–screw character of a given dislocation varies along its length and as it moves. When it has no close neighbours its glide and screwness, and the way they change, are completely determined by the distribution over the trajectory surface of two scalar quantities: the phase of the dislocation and its time of arrival. It is shown how even the most general type of dislocation may be con­sidered to be carried, locally, by a plane wave, whose orientation relative to the trajectory determines the climb of the dislocation. Around a general isolated dislocation the equiphase surfaces form a helicoid; they are equally spaced along any radial line, but with a discontinuity of π across the dislocation line itself. The paper provides a theoretical framework for understanding the local phase structure and the motion of any dislocation in a scalar wave.

scholarly journals Plane wave ultrasound imaging using synthetic aperture image reconstruction techniques

2021 ◽  
Author(s):  
Dae-Myoung (Danny) Yang
Keyword(s):  
Image Reconstruction ◽  
Image Quality ◽  
Plane Wave ◽  
Ultrasound Imaging ◽  
Plane Waves ◽  
Reconstruction Algorithm ◽  
Synthetic Aperture ◽  
Depth Of Penetration ◽  
Image Reconstruction Techniques

Ultrasound imaging based on transmitting plane waves (PW) enables ultrafast imaging. Coherent PW compounding ultrasound imaging can reach the image quality of optimal multifocus image. In the image reconstruction, it was assumed that an infinite extent PWs was emitted. In this thesis, we propose a new image reconstruction algorithm – Synthetic-aperture plane-wave (SAPW) imaging – without using this assumption. The SAPW imaging was compared with the PWs imaging in numerical simulations and experimental measurements. The measured RF data in PW imaging was first decoded in the frequency domain using a pseudoinverse algorithm to estimate the RF data Then, SAPW RF data were used to reconstruct images through the standard synthetic transit aperture (STA) method. Main improvements in the image quality of the SAPW imaging in comparison with the PWs imaging are increases in the depth of penetration and the field of view when contrast-to-noise ratio (CNR) was used as a quantitative metric.

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