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Related Concept Videos

Ultrasonography01:17

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called a...
Spongy Bone01:09

Spongy Bone

All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
Compact Bone01:27

Compact Bone

Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
Bone Structure01:55

Bone Structure

Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.

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Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population
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Frequency specific ultrasound attenuation is sensitive to trabecular bone structure.

Wei Lin1, Frederick Serra-Hsu, Jiqi Cheng

  • 1Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY 11794-5281, USA. wei.lin@stonybrook.edu

Ultrasound in Medicine & Biology
|September 15, 2012
PubMed
Summary

Frequency modulated ultrasound attenuation effectively assesses trabecular bone structure. Correlations varied by frequency, with specific bands showing high sensitivity to bone volume fraction and thickness.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Orthopedics

Background:

  • Trabecular bone structural properties are critical for skeletal integrity.
  • Accurate assessment of these properties is essential for diagnosing bone diseases and evaluating treatment efficacy.
  • Ultrasound attenuation shows potential for non-invasive bone characterization.

Purpose of the Study:

  • To investigate the efficacy of frequency modulated ultrasound attenuation in assessing trabecular bone structural properties.
  • To determine the relationship between ultrasound attenuation across different frequency bands and key microstructural parameters.
  • To identify optimal frequency bands for correlating ultrasound attenuation with specific trabecular bone metrics.

Main Methods:

  • Frequency modulated ultrasound signals were generated across four bands (500 kHz, 900 kHz, 1.3 MHz, 1.7 MHz).
  • Trabecular bone cubes from bovine femur were demineralized to create samples with varied structural properties.
  • Pearson correlation analysis was performed between ultrasound attenuation (in proximal-distal and anterio-posterior orientations) and structural properties (BV/TV, trabecular thickness, number, and separation).

Main Results:

  • Ultrasound attenuation-trabecular property correlations were frequency-dependent.
  • Proximal-distal attenuation showed highest correlation with BV/TV (R(2)=0.73) and thickness (R(2)=0.50) at 1.7 MHz.
  • Anterio-posterior attenuation correlated best with BV/TV (R(2)=0.80) and thickness (R(2)=0.71) at 1.3 MHz; lower frequencies were most sensitive to trabecular number and separation.

Conclusions:

  • Frequency modulated ultrasound attenuation is a viable method for assessing trabecular bone structure.
  • The choice of frequency band and ultrasound propagation orientation significantly influences the correlation with specific bone parameters.
  • Further research may optimize ultrasound parameters for non-invasive in-vivo bone assessment.