A regularized inverse approach to ultrasonic pulse-echo imaging

Roberto Lavarello; Farzad Kamalabadi; William D. O'Brien

doi:10.1109/TMI.2006.873297

A regularized inverse approach to ultrasonic pulse-echo imaging

Roberto Lavarello, Farzad Kamalabadi, William D. O'Brien

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

An inverse-theoretic approach to ultrasonic pulse-echo imaging based on nonquadratic regularization is presented, and its effectiveness is investigated computationally by: 1) evaluating the quality of the reconstruction of speckle-based images as a function of the transmit-receive bandwidth and focal number of the transducer; 2) comparing the reconstructed images with those obtained by using conventional B-mode imaging. The L-curve and the generalized cross-validation methods were evaluated as automatic regularization parameter selection techniques. The inversion using regularization produced better results than conventional B-mode imaging for high signal-to-noise ratios (SNRs). A lower bound of 30 dB for the SNR was found for this study, below which several of the image features were lost during the reconstruction process in order to control the distortion due to the noise.

Original language	English
Article number	1637529
Pages (from-to)	712-722
Number of pages	11
Journal	IEEE Transactions on Medical Imaging
Volume	25
Issue number	6
DOIs	https://doi.org/10.1109/TMI.2006.873297
State	Published - Jun 2006
Externally published	Yes

Keywords

Inverse problems
Pulse-echo imaging
Regularization
Ultrasound imaging

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10.1109/TMI.2006.873297

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AU - Kamalabadi, Farzad

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A regularized inverse approach to ultrasonic pulse-echo imaging

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Keywords

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