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Proceedings Paper

3D ultrasound imaging performance of a row-column addressed 2D array transducer: a simulation study
Author(s): Morten Fischer Rasmussen; Jørgen Arendt Jensen
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Paper Abstract

This paper compares the imaging performance of a 128+128 element row-column addressed array with a fully addressed 16×16 2D array. The comparison is made via simulations of the point spread function with Field II. Both arrays have lambda-pitch, a center frequency of 3:5MHz and use 256 active elements. The row-column addressed array uses 128 transmit channels and 128 receive channels, whereas the fully addressed array uses 256 channels in both transmit and receive. The large size of the emulated row and column elements in the row-column addressed array causes ghost echoes to appear. The ghost echoes are shown to be suppressed when the sub-elements within each of the emulated row and column elements are apodized. The maximum ghost intensity is suppressed by 22:2 dB compared to using no apodization. With apodization applied, the full-width-at-half-maximum in the lateral direction for the fully addressed array is 2:81mm, and 1:01mm for the row-column addressed array. This shows that the detail resolution can be more than doubled using the row-column addressed array instead of the fully addressed array. The row column addressed array achieves a R20 dB cystic resolution of 0:76mm, compared to 3:16mm for the fully addressed array. The significantly smaller R20 dB-value for the row-column addressed array indicates that it can achieve a much higher contrast resolution than the fully addressed array.

Paper Details

Date Published: 29 March 2013
PDF: 11 pages
Proc. SPIE 8675, Medical Imaging 2013: Ultrasonic Imaging, Tomography, and Therapy, 86750C (29 March 2013); doi: 10.1117/12.2007083
Show Author Affiliations
Morten Fischer Rasmussen, Technical Univ. of Denmark (Denmark)
Jørgen Arendt Jensen, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 8675:
Medical Imaging 2013: Ultrasonic Imaging, Tomography, and Therapy
Johan G. Bosch; Marvin M. Doyley, Editor(s)

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