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Title: Radial reflection diffraction tomography

Patent ·
OSTI ID:1082149

A wave-based tomographic imaging method and apparatus based upon one or more rotating radially outward oriented transmitting and receiving elements have been developed for non-destructive evaluation. At successive angular locations at a fixed radius, a predetermined transmitting element can launch a primary field and one or more predetermined receiving elements can collect the backscattered field in a "pitch/catch" operation. A Hilbert space inverse wave (HSIW) algorithm can construct images of the received scattered energy waves using operating modes chosen for a particular application. Applications include, improved intravascular imaging, bore hole tomography, and non-destructive evaluation (NDE) of parts having existing access holes.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
8,335,555
Application Number:
10/814,435
OSTI ID:
1082149
Country of Publication:
United States
Language:
English

References (12)

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conference January 1997
In Vivo Magnetic Resonance Evaluation of Atherosclerotic Plaques in the Human Thoracic Aorta: A Comparison With Transesophageal Echocardiography journal May 2000
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Signal Processing for Diffraction Tomography journal July 1984
The Unstable Atheroma journal October 1997
Wideband quantitative ultrasonic imaging by time-domain diffraction tomography journal December 1999
Intravascular elasticity imaging using ultrasound: Feasibility studies in phantoms journal January 1997
Intravascular ultrasound. Looking below the surface of vascular disease. journal May 1990

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