Journal ArticleDOI
Potential of coded excitation in medical ultrasound imaging.
Thanassis X. Misaridis,Kim Gammelmark,Christian Helms Jørgensen,Niklas Lindberg,Anders H. Thomsen,Morten Høgholm Pedersen,Jørgen Arendt Jensen +6 more
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TLDR
A coded excitation system based on a modified commercial scanner is presented and a predistorted FM signal is proposed in order to keep the resulting range sidelobes at acceptably low levels.About:
This article is published in Ultrasonics.The article was published on 2000-03-01. It has received 114 citations till now. The article focuses on the topics: Imaging phantom.read more
Citations
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Journal ArticleDOI
Synthetic Aperture Ultrasound Imaging
TL;DR: The paper describes the use of synthetic aperture (SA) imaging in medical ultrasound, where data is acquired simultaneously from all directions over a number of emissions, and the full image can be reconstructed from this data.
Journal ArticleDOI
Use of modulated excitation signals in medical ultrasound. Part I: basic concepts and expected benefits
TL;DR: This paper, the first from a series of three papers on the application of coded excitation signals in medical ultrasound, discusses the basic principles and ultrasound-related problems of pulse compression and the selection of coded waveforms suitable for ultrasound imaging.
Journal ArticleDOI
Adaptive pulse compression via MMSE estimation
Shannon D. Blunt,Karl Gerlach +1 more
TL;DR: A new approach based upon a minimum mean-square error (MMSE) formulation in which the pulse compression filter for each individual range cell is adaptively estimated from the received signal in order to mitigate the masking interference resulting from matched filtering in the vicinity of large targets is presented.
Journal ArticleDOI
Recent advances in wavefront shaping techniques for biomedical applications
TL;DR: In this paper, the suppression and control of multiple light scattering events are investigated because they offer the possibility of optical focusing and imaging through biological tissues, and they may open new avenues for diagnosis and treatment of several human diseases.
Journal ArticleDOI
Ultrasound research scanner for real-time synthetic aperture data acquisition
Jørgen Arendt Jensen,O. Holm,L.J. Jerisen,Henrik Bendsen,Svetoslav Ivanov Nikolov,Borislav Georgiev Tomov,Peter Munk,M. Hansen,K. Salomonsen,Jens Munk Hansen,K. Gormsen,H.M. Pedersen,Kim Gammelmark +12 more
TL;DR: The overall system concept is presented along with its implementation and examples of B-mode and in vivo synthetic aperture flow imaging, and the system is capable of performing real-time beamforming for conventional imaging methods using linear, phased, and convex arrays.
References
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Journal ArticleDOI
Effect of skin impedance on image quality and variability in electrical impedance tomography: a model study
K G Boone,David Holder +1 more
TL;DR: It is concluded that the patient's skin should be abraded to reduce impedance, and measurements should be avoided in the first 10 min after electrode placement, to allow satisfactory images.
Journal ArticleDOI
Coded excitation system for improving the penetration of real-time phased-array imaging systems
TL;DR: A very simple coded excitation for phased arrays based on the principles of 'pseudochirp' excitation and equalization filtering is described, capable of SNR improvements of about 15 dB with range sidelobe levels acceptable for many medical imaging applications.
Journal ArticleDOI
A new optimal window (signal processing)
TL;DR: It is concluded that the minimax and least squares approximations are both fundamentally inefficient and capable of much better performance than previously available windows.
Journal ArticleDOI
A pulse compression predistortion function for efficient sidelobe reduction in a high-power radar
C.E. Cook,J. Paolillo +1 more
TL;DR: In this paper, a model of the Fresnel spectrum was introduced for the estimation of the sidelobe structure of the compressed pulse waveform, and the effect of spectrum amplitude ripple in contributing to the sidelobes was investigated.
Related Papers (5)
Use of modulated excitation signals in medical ultrasound. Part I: basic concepts and expected benefits
Effect of skin impedance on image quality and variability in electrical impedance tomography: a model study
K G Boone,David Holder +1 more