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Time of flight interpolated synthetic aperture focusing technique
Author(s): N. V. Ruiter; E. Kretzek; M. Zapf; T. Hopp; H. Gemmeke
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Paper Abstract

Synthetic Aperture Focusing Technique (SAFT) allows fast data acquisition and optimally focused images. The computational burden for 3D imaging is large as for each voxel the delay for each acquired A-scan has to be calculated, e.g. O(N5) for N3 voxels and N2 A-scans. For 3D reconstruction of objects which are large in terms of the wavelength, e.g. ≥ (100 λ)3, the computation of one volume takes several days on a current multicore PC. If the 3D distribution of the speed of sound is applied to correct the delays, the computation time increases further. In this work a time of flight interpolation based GPU implementation (TOFI-SAFT) is presented which accelerates our previous GPU implementation of speed of sound corrected SAFT by a factor of 7 to 16 min. with only minor reduction of image quality.

Paper Details

Date Published: 13 March 2017
PDF: 6 pages
Proc. SPIE 10139, Medical Imaging 2017: Ultrasonic Imaging and Tomography, 101390Q (13 March 2017); doi: 10.1117/12.2254259
Show Author Affiliations
N. V. Ruiter, Karlsruher Institut für Technologie (Germany)
E. Kretzek, Karlsruher Institut für Technologie (Germany)
M. Zapf, Karlsruher Institut für Technologie (Germany)
T. Hopp, Karlsruher Institut für Technologie (Germany)
H. Gemmeke, Karlsruher Institut für Technologie (Germany)


Published in SPIE Proceedings Vol. 10139:
Medical Imaging 2017: Ultrasonic Imaging and Tomography
Neb Duric; Brecht Heyde, Editor(s)

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Time-of-flight-interpolated-synthetic-aperture-focusing-technique



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