Proceedings ArticleDOI
Spatial resolution improvement in Plane Wave Imaging using adaptive Sign Coherence Factor weighting
Lokesh B,Arun K. Thittai +1 more
- pp 1-4
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TLDR
An adaptive weighting function based on the phase dispersion, namely, Sign Coherence Factor (SCF) is adapted to plane wave ultrasound imaging and demonstrates that the spatial resolution in plane wave imaging can be improved using SCF weighting without compromising the other image quality metrics.Abstract:
In this work, an adaptive weighting function based on the phase dispersion, namely, Sign Coherence Factor (SCF) is adapted to plane wave ultrasound imaging. SCF weighting is tested on both simulation and experimental data provided by the Plane Wave Imaging Challenge in Medical Ultrasound (PICMUS) organizers. The results demonstrate that the spatial resolution in plane wave imaging can be improved using SCF weighting without compromising the other image quality metrics. Furthermore, the results are compared with conventional delay and sum beamforming algorithm.read more
Citations
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Journal ArticleDOI
A Comparison of Coherence-Based Beamforming Techniques in High-Frame-Rate Ultrasound Imaging With Multi-Line Transmission
TL;DR: This work investigates the possibility to effectively suppress crosstalk artifacts in MLT while improving image quality by applying beamforming techniques based on backscattered signals spatial coherence, and demonstrates that this class of algorithms can provide significant benefits compared with delay and sum.
Journal ArticleDOI
Fourier Domain Depth Migration for Plane-Wave Ultrasound Imaging
TL;DR: This work shows how to modify two classic algorithms used for geophysical data processing (namely, Stolt’s and slant-stack depth migration under zero-offset constant-velocity assumptions) so that their new versions can be used for PW ultrasound data processing.
Journal ArticleDOI
Modeling of the Acoustic Field Produced by Diagnostic Ultrasound Arrays in Plane and Diverging Wave Modes
TL;DR: In nonlinear simulations, the second harmonic produced by ultrafast THI was found to be 2–16 dB lower than that of focused beams for all arrays considered when operated at the same MI, suggesting that it is feasible to combine PWI/DWI and THI.
Proceedings ArticleDOI
Design of a low cost ultrasound system using diverging beams and synthetic aperture approach: Preliminary study
Lokesh B,Arun K. Thittai +1 more
TL;DR: Results show that the proposed method provides better Lateral Resolution (LR) to that obtained when conventional focused linear array technique is used and is shown to improve further when sign coherence factor weighting is incorporated during beamforming.
Journal ArticleDOI
Plane wave ultrasound imaging using compressive sensing and minimum variance beamforming.
TL;DR: In this article , a new compressive sensing (CS) based approach is introduced with the combination of the adaptive minimum variance (MV) algorithm to further improve the image quality in terms of resolution and contrast.
References
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Coherent plane-wave compounding for very high frame rate ultrasonography and transient elastography
TL;DR: It is proposed to improve the beamforming process by using a coherent recombination of compounded plane-wave transmissions to recover high-quality echographic images without degrading the high frame rate capabilities.
Journal ArticleDOI
Adaptive Beamforming Applied to Medical Ultrasound Imaging
TL;DR: The minimum variance (MV) adaptive beamformer is applied to medical ultrasound imaging and shown significant improvement in image quality compared to delay-and-sum (DAS).
Journal ArticleDOI
Adaptive imaging using the generalized coherence factor
Pai-Chi Li,Meng-Lin Li +1 more
TL;DR: A new adaptive imaging technique that uses the generalized coherence factor (GCF) to reduce the focusing errors resulting from the sound-velocity inhomogeneities rivals that of the correlation-based technique and the parallel adaptive receive compensation algorithm.
Journal ArticleDOI
Phase Coherence Imaging
TL;DR: A new method for grating and side lobes suppression in ultrasound images is presented, based on an analysis of the phase diversity at the aperture data, which uses phase rather than amplitude information to perform the correction action.
Journal ArticleDOI
Coherent Plane Wave Compounding for Very High Frame Rate Ultrasonography of Rapidly Moving Targets
Bastien Denarie,T. A. Tangen,Ingvild Kinn Ekroll,Natale Rolim,Hans Torp,Tore Gruner Bjastad,Lasse Lovstakken +6 more
TL;DR: A motion compensation technique based on cross-correlation was introduced, which significantly recovered the losses in SNR and contrast for physiological tissue velocities and the effects of motion were demonstrated in vivo when imaging a rat heart.