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Proceedings Paper

GPU-based 3D SAFT reconstruction including attenuation correction
Author(s): E. Kretzek; T. Hopp; N. V. Ruiter
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Paper Abstract

3D Ultrasound Computer Tomography (3D USCT) promises reproducible high-resolution images for early detection of breast tumors. The KIT prototype provides three different modalities: reflectivity, speed of sound, and attenuation. The reflectivity images are reconstructed using a Synthetic Aperture Focusing Technique (SAFT) algorithm. For high-resolution re ectivity images, with spatially homogeneous reflectivity, attenuation correction is necessary. In this paper we present a GPU accelerated attenuation correction for 3D USCT and evaluate the method by means of image quality metrics; i.e. absolute error, contrast and spatially homogeneous reflectivity. A threshold for attenuation correction was introduced to preserve a high contrast. Simulated and in-vivo data were used for analysis of the image quality. Attenuation correction increases the image quality by improving spatially homogeneous reflectivity by 25 %. This leads to a factor 2.8 higher contrast for in-vivo data.

Paper Details

Date Published: 17 March 2015
PDF: 9 pages
Proc. SPIE 9419, Medical Imaging 2015: Ultrasonic Imaging and Tomography, 94190E (17 March 2015); doi: 10.1117/12.2081367
Show Author Affiliations
E. Kretzek, Karlsruher Institut für Technologie (Germany)
T. Hopp, Karlsruher Institut für Technologie (Germany)
N. V. Ruiter, Karlsruher Institut für Technologie (Germany)

Published in SPIE Proceedings Vol. 9419:
Medical Imaging 2015: Ultrasonic Imaging and Tomography
Johan G. Bosch; Neb Duric, Editor(s)

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