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Related Concept Videos

Computed Tomography01:10

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...

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Related Experiment Video

Updated: Jun 23, 2026

Outer-Boundary Assisted Segmentation and Quantification of Trabecular Bones by an Imagej Plugin
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Published on: March 14, 2018

Reproducibility of trabecular structure analysis using flat-panel volume computed tomography.

Arnold C Cheung1, Miriam A Bredella, Ma'moun Al Khalaf

  • 1Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA.

Skeletal Radiology
|May 12, 2009
PubMed
Summary

Flat-panel volume computed tomography (fp-VCT) demonstrates low variability for analyzing trabecular bone structure in knee specimens. This imaging technique offers reliable measurements for inter-scan, inter-reader, and intra-reader assessments.

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Area of Science:

  • Orthopedics
  • Radiology
  • Biomedical Engineering

Background:

  • Trabecular bone structure analysis is crucial for understanding bone health and disease.
  • Accurate and reproducible imaging techniques are essential for quantitative assessment of bone microarchitecture.

Purpose of the Study:

  • To evaluate the variability of trabecular structure analysis using flat-panel volume computed tomography (fp-VCT).
  • To assess inter-scan, inter-reader, and intra-reader variability in proximal tibia trabecular bone measurements.

Main Methods:

  • Five cadaver knee specimens were scanned using fp-VCT at three different time points.
  • Four trabecular bone structure parameters were measured by two independent observers.
  • Bland-Altman analysis was employed to quantify inter-scan, inter-observer, and intra-observer variability.

Main Results:

  • Inter-scan variability was consistently low, with a mean difference of 0% and standard deviations below 8.4% for all parameters.
  • Inter-observer and intra-observer variability were also minimal, with differences less than 2.8% +/- 8.5%.

Conclusions:

  • Flat-panel volume computed tomography (fp-VCT) provides a reliable method for assessing trabecular bone structure parameters.
  • The technique exhibits low inter-scan, inter-reader, and intra-reader variability, supporting its clinical utility.