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Towards ultrasound travel time tomography for quantifying human limb geometry and material properties

Author(s)
Fincke, Jonathan Randall; Zhang, Xiang; Anthony, Brian; Feigin, Micha; Prieto Gomez, German A.
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Abstract
Sound speed inversions made using simulated time of flight data from a numerical limb-mimicking phantom comprised of soft tissue and a bone inclusion demonstrate that wave front tracking forward modeling combined with 𝐿1 regularization could lead to accurate estimates of bone sound-speed. Ultrasonic tomographic imaging of limbs has the potential to impact prosthetic socket fitting, as well as detect and track muscular dystrophy diseases, osteoporosis and bone fractures at low cost and without radiation exposure. Research in ultrasound tomography of bones has increased in the last 10 years, however, methods delivering clinically useful sound-speed inversions are lacking. Inversions for the sound-speed of the numerical phantoms using 𝐿1 and 𝐿2 regularizations are compared using wave front forward models. The simulations are based on a custom-made cylindrically-scanning tomographic medical ultrasound system (0.5 – 5 MHz) consisting of two acoustic transducers capable of collecting pulse echo and travel time measurements over the entire 360° aperture. Keywords: Ultrasound tomography, bone, migration, reverse time migration
Date issued
2016-04
URI
http://hdl.handle.net/1721.1/114752
Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences; Massachusetts Institute of Technology. Department of Mechanical Engineering; Program in Media Arts and Sciences (Massachusetts Institute of Technology)
Journal
Medical Imaging 2016: Ultrasonic Imaging and Tomography
Publisher
SPIE
Citation
Fincke, Jonathan R., et al. “Towards Ultrasound Travel Time Tomography for Quantifying Human Limb Geometry and Material Properties.”Medical Imaging 2016: Ultrasonic Imaging and Tomography, February 2016, San Diego, California, USA, edited by Neb Duric and Brecht Heyde, SPIE, April 2016 © 2016 Society of Photo-Optical Instrumentation Engineers
Version: Final published version
ISBN
9781510600256
ISSN
0277-786X
1996-756X

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