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Proceedings Paper

Realization of an optimized 3D USCT
Author(s): Nicole V. Ruiter; Georg Göbel; Lutz Berger; Michael Zapf; Hartmut Gemmeke
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Paper Abstract

A promising candidate for improved imaging of breast cancer is ultrasound computer tomography (USCT). Current experimental USCT systems are still focused in elevation dimension resulting in a large slice thickness, limited depth of field, loss of out-of-plane reflections, and a large number of movement steps to acquire a stack of images. 3DUSCT emitting and receiving spherical wave fronts overcomes these limitations. We built an optimized 3DUSCT with nearly isotropic 3D point spread function, realizing for the first time the full benefits of a 3D system. The 3DUSCT II is based on a semi-ellipsoidal transducer holder cut from polyoxymethylene. The aperture is implemented together with water supply, disinfection unit, temperature control, and movement mechanics in a patient bed. 2041 transducers are mounted in the aperture holder grouped into transducer array systems with embedded amplifiers and emitter electronics. The data acquisition is carried out with 480 parallel channels at 20MHz and with 12 bit resolution. 3.5 million A-Scans with 20 GByte of raw data are acquired for one breast volume. With data acquisition time of less than two minutes for one breast volume, the new system enables the next step of our research: a first clinical study.

Paper Details

Date Published: 25 March 2011
PDF: 8 pages
Proc. SPIE 7968, Medical Imaging 2011: Ultrasonic Imaging, Tomography, and Therapy, 796805 (25 March 2011); doi: 10.1117/12.877520
Show Author Affiliations
Nicole V. Ruiter, Karlsruhe Institute of Technology (Germany)
Georg Göbel, Karlsruhe Institute of Technology (Germany)
Lutz Berger, Karlsruhe Institute of Technology (Germany)
Michael Zapf, Karlsruhe Institute of Technology (Germany)
Hartmut Gemmeke, Karlsruhe Institute of Technology (Germany)

Published in SPIE Proceedings Vol. 7968:
Medical Imaging 2011: Ultrasonic Imaging, Tomography, and Therapy
Jan D'hooge; Marvin M. Doyley, Editor(s)

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