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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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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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Radiological Investigation I: X-ray and CT01:30

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Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
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Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
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DEXA and Imaging in Osteoporosis.

Gururaj Sangondimath1, Ramesh Kumar Sen2, Fazal Rehman T1

  • 1Department of Spine Services, Indian Spinal Injuries Center, Vasant Kunj, New Delhi, 110070 India.

Indian Journal of Orthopaedics
|December 18, 2023
PubMed
Summary

Dual-energy X-ray absorptiometry (DEXA) and advanced imaging techniques improve osteoporosis diagnosis and fracture risk assessment. Integrating multiple modalities enhances treatment monitoring and patient outcomes for better bone health management.

Keywords:
DEXAFracture riskHR pQCTImaging methods in osteoporosisOsteoporosisQuantitative ultrasound

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Area of Science:

  • Medical Imaging
  • Orthopedics
  • Radiology

Background:

  • Osteoporosis is characterized by reduced bone density and increased fragility, posing a significant public health challenge.
  • Accurate bone health evaluation is crucial for early diagnosis and effective osteoporosis therapy.
  • Dual-energy X-ray absorptiometry (DEXA) is a primary tool for assessing osteoporosis.

Purpose of the Study:

  • To review DEXA and complementary imaging methods for osteoporosis assessment.
  • To explore how advanced techniques overcome DEXA limitations by evaluating bone microarchitecture and quality.
  • To discuss the role of imaging in diagnosis, fracture risk prediction, and therapy monitoring.

Main Methods:

  • Dual-energy X-ray absorptiometry (DEXA) for bone mineral density (BMD) and T-score calculation.
  • High-resolution peripheral quantitative computed tomography (HR-pQCT) for detailed 3D bone structure imaging.
  • Quantitative ultrasonography (QUS) for assessing bone health via sound wave characteristics.
  • Magnetic resonance imaging (MRI) for non-ionizing visualization of bone marrow and trabecular structure.
  • Trabecular bone score (TBS) for analyzing bone texture and fracture likelihood.
  • Finite element analysis (FEA) for biomechanical modeling of bone strength.

Main Results:

  • DEXA provides T-scores but may misclassify bone health due to factors beyond BMD.
  • Complementary methods like HR-pQCT, QUS, and MRI offer insights into bone microarchitecture, quality, and strength.
  • Advanced techniques such as TBS and FEA enhance fracture risk prediction beyond conventional methods.
  • Imaging facilitates diagnosis, personalized treatment planning, and monitoring of therapy effectiveness.

Conclusions:

  • DEXA remains the gold standard, but advanced imaging modalities provide crucial details on bone health.
  • Integrating various imaging techniques improves fracture risk prediction and treatment assessment.
  • Further development and standardization of these methods promise better osteoporosis management and patient outcomes.