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. © 2016 IEEE.

Arun K. Thittai

Department of Applied Mechanics

Elastic waves

Image resolution

Ultrasonic imaging

Wave propagation

DELAY AND SUM BEAMFORMING

Image quality metrics

MEDICAL ULTRASOUND

PHASE VARIANCE

PLANE WAVE

SIGN COHERENCE FACTORS

spatial resolution

ultrasound imaging

Medical imaging

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Spatial resolution improvement in Plane Wave Imaging using adaptive Sign Coherence Factor weighting

IEEE International Ultrasonics Symposium, IUS

In this paper, a new method inspired by the synthetic aperture approach is proposed that aims at reducing the system's complexity (only 8 or 16 active elements) without compromising the image quality, and at frame rates comparable to or higher than conventional focused linear array technique. The novel method has been investigated in simulations using Field II software and experiments performed on a wire phantom using an ultrasound scanner. Results show that the proposed method provides better Lateral Resolution (LR) to that obtained when conventional focused linear array technique is used. The estimated LR at the focal point was 1.09 mm and 0.29 mm for conventional and the proposed method, respectively, in simulations. These were estimated to be 1.03 mm and 0.38 mm, respectively, in experiments. The image quality is shown to improve further when sign coherence factor weighting is incorporated during beamforming. © 2017 IEEE.

Proceedings - International Symposium on Biomedical Imaging

Design of a low cost ultrasound system using diverging beams and synthetic aperture approach: Preliminary study

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

A fast minimum variance beamforming method using principal component analysis

IEEE Transactions on Medical Imaging

Coherent Plane Wave Compounding for Very High Frame Rate Ultrasonography of Rapidly Moving Targets

Ultrasound Imaging

Adaptive Beamforming by Phase Coherence Processing

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

Phase Coherence Imaging

Coherent plane-wave compounding for very high frame rate ultrasonography and transient elastography

Journal	Data powered by TypesetIEEE International Ultrasonics Symposium, IUS
Publisher	Data powered by TypesetIEEE Computer Society
ISSN	19485719
Open Access	No