Point Spread Function Formation in Plane-Wave Imaging: A Theoretical Approximation in Fourier Migration

The point spread function (PSF) is often analyzed to determine the image quality of an ultrasound system. The formation of PSF is determined by practical factors, such as transducer aperture, element directivity, apodization, pitch, imaging position, and steering angle. Conventional numerical simula...

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Bibliographic Details
Published in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2020-02, Vol.67 (2), p.296-307
Main Authors: Chen, Chuan, Hansen, Hendrik H. G., Hendriks, Gijs A. G. M., Menssen, Jan, Lu, Jian-Yu, de Korte, Chris L.
Format: Article
Language:English
Subjects:
Acoustics
Apertures
Apodization
Approximation
Computer simulation
Directivity
Fourier migration
Image quality
Image reconstruction
Imaging
Iterative methods
Mathematical analysis
plane wave
point spread function (PSF)
Point spread functions
Scattering
Steering
Transducers
Ultrasonic imaging
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Summary:The point spread function (PSF) is often analyzed to determine the image quality of an ultrasound system. The formation of PSF is determined by practical factors, such as transducer aperture, element directivity, apodization, pitch, imaging position, and steering angle. Conventional numerical simulations provide an iterative approach to examine those factors' effects but cannot explain the inherent mechanism of PSF formation. This article presents a theoretical approximation of PSF formation for plane-wave imaging throughout the Fourier-based reconstruction process. Aforementioned factors are incorporated in the theory. The proposed theory is used to analyze the effects of those factors and presents a high degree of consistency with numerical simulations and experiments.
ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2019.2944191