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X-ray Imaging01:24

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Imaging Studies for Cardiovascular System III: X-Ray01:20

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The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
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An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
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Related Experiment Video

Updated: Mar 8, 2026

Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model
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Quantitative imaging methods in osteoporosis.

Ling Oei1, Fjorda Koromani1, Fernando Rivadeneira1

  • 1Department of Internal Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands; Department of Radiology & Nuclear Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.

Quantitative Imaging in Medicine and Surgery
|January 17, 2017
PubMed
Summary
This summary is machine-generated.

Quantitative imaging techniques are vital for diagnosing osteoporosis and monitoring treatment. This review covers methods like DXA, QCT, and MRI for assessing bone density, architecture, and molecular changes to predict fracture risk.

Keywords:
Quantitative imagingcomputed tomography (CT)dual-energy X-ray absorptiometry (DXA)magnetic resonance imaging (MRI)osteoporosispositron emission tomography (PET)radiography

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Area of Science:

  • Radiology
  • Orthopedics
  • Biomedical Engineering

Background:

  • Osteoporosis is a condition of reduced bone mass and quality, increasing fracture risk.
  • Accurate assessment of bone health is crucial for clinical decision-making and treatment evaluation.
  • Quantitative imaging plays a key role in diagnosing osteoporosis and tracking therapeutic responses.

Approach:

  • This review examines quantitative imaging techniques used in osteoporosis diagnosis and research.
  • Methods discussed include dual-energy X-ray absorptiometry (DXA), quantitative computed tomography (QCT), and magnetic resonance imaging (MRI).
  • Advanced techniques like trabecular bone score (TBS) derived from DXA and high-resolution (HR) CT are also covered.

Key Points:

  • Bone mineral density (BMD) from DXA and prior vertebral fractures are strong predictors of future fractures.
  • Quantitative computed tomography (QCT) enables detailed assessment of three-dimensional bone architecture.
  • Emerging MRI techniques show promise for evaluating bone micro-architecture and molecular processes.

Conclusions:

  • Quantitative imaging is essential for osteoporosis diagnosis, fracture risk assessment, and treatment monitoring.
  • A range of techniques, from DXA to advanced MRI, offer valuable data on bone health.
  • Continued development of imaging modalities will enhance our understanding and management of osteoporosis.