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| Title:
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A Method for Synthetic Aperture Compounding |
| Type:
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Article in proceedingsArticle in proceedings |
| Participant(s):
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Technical University of Denmark
Email:
Technical University of Denmark
Email:
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| Abstract:
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An approach to perform ultrasound spatial compounding
using synthetic aperture data is proposed. The approach
allows compounding to be performed for any number
of directions without reducing the frame rate or temporal
resolution. It is demonstrated how the contrast is improved by
compounding and the effect is quantized by speckle statistics and
by computing contrast-to-noise ratios (CNR) from the resulting
images. The method is validated using Field II simulations for a
7 MHz, =2-pitch transducer with 192 elements with 64 elements
active for each scan line. Circular regions (cysts) with a diameter
of 5 mm and scattering levels ranging from -3 to -12 dB relative
to the background are imaged at 2 depths. Compound images
composed of 1-5 images with an angular separation of 2 degrees
are constructed and for the cysts at -3, -6, -9, and -12 dB, a
CNR of -0.43, -1.11, -1.44, and -1.91 dB are obtained when using
5 images. Using the same RF data, a synthetic aperture image
without compounding reveals a CNR of -0.36, -0.93, -1.23, and
-1.61 dB for the four cysts, respectively. |
| Published:
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part of: Proceedings of IEEE International Ultrasonics Symposium (ISBN: 978-1-4577-0380-5), pages: 1743-1746, 2010, IEEE, |
| DOI:
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| File(s):
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| Presented at:
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2010 IEEE International Ultrasonics Symposium, San Diego, California |
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