Ultrasonic Imaging and Tomography

Enhanced axial and lateral resolution using stabilized pulses

[+] Author Affiliations
Shujie Chen, Kevin J. Parker

University of Rochester, Department of Electrical and Computer Engineering, Rochester, New York, United States

J. Med. Imag. 4(2), 027001 (May 08, 2017). doi:10.1117/1.JMI.4.2.027001
History: Received March 7, 2017; Accepted April 17, 2017
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Abstract.  Ultrasound B-scan imaging systems operate under some well-known resolution limits. To improve resolution, the concept of stable pulses, having bounded inverse filters, was previously utilized for the lateral deconvolution. This framework has been extended to the axial direction, enabling a two-dimensional deconvolution. The modeling of the two-way response in the axial direction is discussed, and the deconvolution is performed in the in-phase quadrature data domain. Stable inverse filters are generated and applied for the deconvolution of the image data from Field II simulation, a tissue-mimicking phantom, and in vivo imaging of a carotid artery, where resolution enhancement is observed. Specifically, in simulation results, the resolution is enhanced by as many as 8.75 times laterally and 20.5 times axially considering the 6-dB width of the autocorrelation of the envelope images.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Shujie Chen and Kevin J. Parker
"Enhanced axial and lateral resolution using stabilized pulses", J. Med. Imag. 4(2), 027001 (May 08, 2017). ; http://dx.doi.org/10.1117/1.JMI.4.2.027001


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