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High‐speed data acquisition in a diffraction tomography system employing large‐scale toroidal arrays

1997; Wiley; Volume: 8; Issue: 1 Linguagem: Inglês

10.1002/(sici)1098-1098(1997)8

1098-1098

Michael P. André, Helmar S. Janée, Peter Martin, G.P. Otto, Brett A. Spivey, Douglas A. Palmer,

Microwave Imaging and Scattering Analysis

International Journal of Imaging Systems and TechnologyVolume 8, Issue 1 p. 137-147 High-speed data acquisition in a diffraction tomography system employing large-scale toroidal arrays Michael P. André, Corresponding Author Michael P. André Department of Radiology (114), Veterans Affairs Medical Center, 3350 La Jolla Village Drive, San Diego, CA 92161 Department of Radiology, University of California School of Medicine, San Diego, CA 92161Department of Radiology (114), Veterans Affairs Medical Center, 3350 La Jolla Village Drive, San Diego, CA 92161Search for more papers by this authorHelmar S. Janée, Helmar S. Janée Department of Radiology (114), Veterans Affairs Medical Center, 3350 La Jolla Village Drive, San Diego, CA 92161 Department of Radiology, University of California School of Medicine, San Diego, CA 92161Search for more papers by this authorPeter J. Martin, Peter J. Martin ThermoTrex Corporation, San Diego, CA 92161Search for more papers by this authorGregory P. Otto, Gregory P. Otto ThermoTrex Corporation, San Diego, CA 92161Search for more papers by this authorBrett A. Spivey, Brett A. Spivey ThermoTrex Corporation, San Diego, CA 92161Search for more papers by this authorDouglas A. Palmer, Douglas A. Palmer ThermoTrex Corporation, San Diego, CA 92161Search for more papers by this author Michael P. André, Corresponding Author Michael P. André Department of Radiology (114), Veterans Affairs Medical Center, 3350 La Jolla Village Drive, San Diego, CA 92161 Department of Radiology, University of California School of Medicine, San Diego, CA 92161Department of Radiology (114), Veterans Affairs Medical Center, 3350 La Jolla Village Drive, San Diego, CA 92161Search for more papers by this authorHelmar S. Janée, Helmar S. Janée Department of Radiology (114), Veterans Affairs Medical Center, 3350 La Jolla Village Drive, San Diego, CA 92161 Department of Radiology, University of California School of Medicine, San Diego, CA 92161Search for more papers by this authorPeter J. Martin, Peter J. Martin ThermoTrex Corporation, San Diego, CA 92161Search for more papers by this authorGregory P. Otto, Gregory P. Otto ThermoTrex Corporation, San Diego, CA 92161Search for more papers by this authorBrett A. Spivey, Brett A. Spivey ThermoTrex Corporation, San Diego, CA 92161Search for more papers by this authorDouglas A. Palmer, Douglas A. Palmer ThermoTrex Corporation, San Diego, CA 92161Search for more papers by this author First published: 07 December 1998 https://doi.org/10.1002/(SICI)1098-1098(1997)8:1 3.0.CO;2-%23Citations: 52AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract This report describes the development of an experimental system for ultrasound computed tomography and its application to breast imaging. Details of the system design and methods of high-speed data acquisition are presented. The method uses low-power discrete frequency sound in the range of 0.3–1.2 MHz, two cylindrical arrays of 512 and 1024 PZT transducers, high spatial sampling of the wavefront, and unique diffraction tomographic reconstruction methods. One transducer at a time is activated and allowed to reach steady state at which point the remaining measure phase and amplitude of the ultrasound signal. A total of 64 MB of data are acquired in <1 s for the 512-element array and 128 MB in <3 s for the 1024 array. Several algorithms have been developed to produce the diffraction tomogram which is reconstructed as either a 512 × 512 or 1024 × 1024 matrix of the scattering potential of the object dependent on speed of sound and attenuation. The effects of aberration are greatly diminished by a hybrid iterative algorithm. To date, human images have been made of the female breast which show good depiction of glandular structures and differentiation of gland and fat, and the coronal format provides a novel of the entire breast in life-size display. The results demonstrate that the technique provides a unique quantitative ultrasound image with high resolution over a very large global field of view of the breast. The method shows promise for improved imaging of the breast. © 1997 John Wiley & Sons, Inc. Int J Imaging Syst Technol, 8: 137–147, 1997 Citing Literature Volume8, Issue1Special Issue: Acoustical Tomography1997Pages 137-147 RelatedInformation