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Title: Radial Reflection Diffraction Tomography

Abstract

We develop a wave-based tomographic imaging algorithm based upon a single rotating radially outward oriented transducer. At successive angular locations at a fixed radius, the transducer launches a primary field and collects the backscattered field in a ''pitch/catch'' operation. The hardware configuration, operating mode, and data collection method is identical to that of most medical intravascular ultrasound (IVUS) systems. IVUS systems form images of the medium surrounding the probe based upon ultrasonic B-scans, using a straight-ray model of sound propagation. Our goal is to develop a wave-based imaging algorithm using diffraction tomography techniques. Given the hardware configuration and the imaging method, we refer to this system as ''radial reflection diffraction tomography.'' We consider two hardware configurations: a multimonostatic mode using a single transducer as described above, and a multistatic mode consisting of a single transmitter and an aperture formed by multiple receivers. In this latter case, the entire source/receiver aperture rotates about the fixed radius. Practically, such a probe is mounted at the end of a catheter or snaking tube that can be inserted into a part or medium with the goal of forming images of the plane perpendicular to the axis of rotation. We derive an analytic expression formore » the multimonostatic inverse but ultimately use the new Hilbert space inverse wave (HSIW) algorithm to construct images using both operating modes. Applications include improved IVUS imaging, bore hole tomography, and non-destructive evaluation (NDE) of parts with existing access holes.« less

Authors:
;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
15009729
Report Number(s):
UCRL-TR-200707
TRN: US0406601
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 10 Oct 2003
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 42 ENGINEERING; ALGORITHMS; APERTURES; CONFIGURATION; DIFFRACTION; EVALUATION; HILBERT SPACE; PROBES; REFLECTION; ROTATION; TOMOGRAPHY; TRANSDUCERS; ULTRASONIC WAVES

Citation Formats

Lehman, S K, and Norton, S J. Radial Reflection Diffraction Tomography. United States: N. p., 2003. Web. doi:10.2172/15009729.
Lehman, S K, & Norton, S J. Radial Reflection Diffraction Tomography. United States. https://doi.org/10.2172/15009729
Lehman, S K, and Norton, S J. 2003. "Radial Reflection Diffraction Tomography". United States. https://doi.org/10.2172/15009729. https://www.osti.gov/servlets/purl/15009729.
@article{osti_15009729,
title = {Radial Reflection Diffraction Tomography},
author = {Lehman, S K and Norton, S J},
abstractNote = {We develop a wave-based tomographic imaging algorithm based upon a single rotating radially outward oriented transducer. At successive angular locations at a fixed radius, the transducer launches a primary field and collects the backscattered field in a ''pitch/catch'' operation. The hardware configuration, operating mode, and data collection method is identical to that of most medical intravascular ultrasound (IVUS) systems. IVUS systems form images of the medium surrounding the probe based upon ultrasonic B-scans, using a straight-ray model of sound propagation. Our goal is to develop a wave-based imaging algorithm using diffraction tomography techniques. Given the hardware configuration and the imaging method, we refer to this system as ''radial reflection diffraction tomography.'' We consider two hardware configurations: a multimonostatic mode using a single transducer as described above, and a multistatic mode consisting of a single transmitter and an aperture formed by multiple receivers. In this latter case, the entire source/receiver aperture rotates about the fixed radius. Practically, such a probe is mounted at the end of a catheter or snaking tube that can be inserted into a part or medium with the goal of forming images of the plane perpendicular to the axis of rotation. We derive an analytic expression for the multimonostatic inverse but ultimately use the new Hilbert space inverse wave (HSIW) algorithm to construct images using both operating modes. Applications include improved IVUS imaging, bore hole tomography, and non-destructive evaluation (NDE) of parts with existing access holes.},
doi = {10.2172/15009729},
url = {https://www.osti.gov/biblio/15009729}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Oct 10 00:00:00 EDT 2003},
month = {Fri Oct 10 00:00:00 EDT 2003}
}