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Glasses for 3D ultrasound computer tomography: phase compensation

Authors :
Nicole V. Ruiter
Torsten Hopp
Michael Zapf
Source :
Medical Imaging: Image Processing
Publication Year :
2016
Publisher :
SPIE, 2016.

Abstract

Ultrasound Computer Tomography (USCT), developed at KIT, is a promising new imaging system for breast cancer diagnosis, and was successfully tested in a pilot study. The 3D USCT II prototype consists of several hundreds of ultrasound (US) transducers on a semi-ellipsoidal aperture. Spherical waves are sequentially emitted by individual transducers and received in parallel by many transducers. Reflectivity volumes are reconstructed by synthetic aperture focusing (SAFT). However, straight forward SAFT imaging leads to blurred images due to system imperfections. We present an extension of a previously proposed approach to enhance the images. This approach includes additional a priori information and system characteristics. Now spatial phase compensation was included. The approach was evaluated with a simulation and clinical data sets. An increase in the image quality was observed and quantitatively measured by SNR and other metrics.

Details

ISSN :
0277786X
Database :
OpenAIRE
Journal :
SPIE Proceedings
Accession number :
edsair.doi...........4ad0d8ec5590d1069ccd34c1f0996e85
Full Text :
https://doi.org/10.1117/12.2217228