Development of Ultrasound to Measure In-Vivo Dynamic Cervical Spine Intervertebral Disc Mechanics

Abstract

We developed a unique dual ultrasound system that can non-invasively measure Intervertebral Disc (IVD) deformation and mechanical compliance ex-vivo and in-vivo. The system is capable of providing real-time images of IVDs and dynamic vertebral motion during simulated tasks. Vertebrae motion and IVD deformation were measured by tracking the bony surface profiles in consecutive US images. Classical Voigt model and finite element model were built to investigate the transfer function human cadaveric spine functional spine units to account for the differential elasticity during compression or tension. As a portable, low cost imaging modality, the dual ultrasound system quantified cervical spine IVD displacement and the mechanical compliance of a functional spinal unit (FSU) in response to applied forces. This technology allowed in-vivo evaluation of cervical spine mechanical behavior in dynamic environments where MRI and CT cannot be used.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2016
Accession Number
AD1007583

Entities

People

  • Brian Synder

Organizations

  • Beth Israel Deaconess Medical Center

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Compression
  • Cyclic Loads
  • Displacement
  • Elastic Materials
  • Environment
  • Experimental Data
  • Frequency
  • Materials
  • Measurement
  • Mechanics
  • Motion Capture
  • Musculoskeletal Physiology
  • Orthopedics
  • Pain
  • Spine
  • Transfer Functions
  • Ultrasounds

Fields of Study

  • Medicine

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Mechanical Engineering/Mechanics of Materials.
  • Neurotrauma and Rehabilitation Medicine.