• Corpus ID: 254069465

Model-based Reconstruction for Multi-Frequency Collimated Beam Ultrasound Systems

  title={Model-based Reconstruction for Multi-Frequency Collimated Beam Ultrasound Systems},
  author={Abdulrahman M. Alanazi and Singanallur Venkatakrishnan and Hector J. Santos-Villalobos and Gregery T. Buzzard and Charles A. Bouman},
Collimated beam ultrasound systems are a technology for imaging inside multi-layered structures such as geothermal wells. These systems work by using a collimated narrow-band ultrasound transmitter that can penetrate through multiple layers of heterogeneous material. A series of measurements can then be made at multiple transmit frequencies. However, commonly used reconstruction algorithms such as Synthetic Aperture Focusing Technique (SAFT) tend to produce poor quality reconstructions for… 

Ringing Artifact Reduction Method for Ultrasound Reconstruction Using Multi-Agent Consensus Equilibrium

Non-destructive characterization of multi-layered structures that can be accessed from only a single side is important for applications such as well-bore integrity inspection. Existing methods



Model-Based Reconstruction for Collimated Beam Ultrasound Systems

Collimated beam ultrasound systems are a novel technology for imaging inside multi-layered structures such as geothermal wells. Such systems include a transmitter and multiple receivers to capture

Synthetic aperture focusing of ultrasonic data from multilayered media using an omega-K algorithm

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Enhanced image resolution and lower noise have been achieved, concurrently with the reduction of helical cone-beam artifacts, as demonstrated by phantom studies and clinical results illustrate the capabilities of the algorithm on real patient data.

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Ultrasonic B-scan imaging is affected by the acoustic diffraction and electrical effects in nondestructive testing (NDT), resulting in insufficient lateral and temporal resolution for defect

Full-waveform inversion and least-squares reverse-time migration imaging of collimated ultrasonic-beam data for high-resolution wellbore integrity monitoring

Los Alamos National Laboratory (LANL) has recently developed an ultrasonic side-lobe suppressed Bessel collimated beam transducer for low-frequency imaging through highly attenuating materials. We

Ultrasonic imaging of multi-layer concrete structures

An Implementation of Synthetic Aperture Focusing Technique in Frequency Domain

  • T. Stepinski
  • Physics
    IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  • 2007
The proposed frequency-domain algorithm is computationally attractive due to the use of 2D FFT, and the classical time-domain SAFT is compared in the paper using simulated and real ultrasonic data.