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Related Concept Videos

Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Brain Imaging01:14

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic Stimulation (TMS).
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...
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...
X-ray Imaging01:24

X-ray Imaging

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 X-rays, and by 1900, X-ray was widely...

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Related Experiment Video

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Spinal Sonography for Ultrasound-Guided Lumbar Neuraxial Anesthesia
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Published on: January 31, 2025

Physiologic imaging of the spine.

Jad G Khalil1, Ahmad Nassr, Timothy P Maus

  • 1Department of Orthopedic Surgery, Henry Ford Hospital, Detroit, MI, USA. jadkhalil@gmail.com

Radiologic Clinics of North America
|May 31, 2012
PubMed
Summary

Dynamic spine imaging techniques, including standing radiographs and upright MRI, reveal hidden pathologies unlike standard supine imaging. However, caution is advised as some methods may decrease sensitivity to serious conditions.

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Area of Science:

  • Radiology
  • Orthopedics
  • Medical Imaging

Background:

  • Spine imaging presents challenges due to the spine's dynamic nature and multi-segmental mobility.
  • Conventional supine imaging cannot fully capture physiological effects of axial load, posture, or positional changes.

Purpose of the Study:

  • To explore advanced imaging techniques for dynamic spine assessment.
  • To highlight the limitations of conventional supine spine imaging.

Main Methods:

  • Review of advanced imaging modalities: standing radiographs, axial loading CT/MRI, dynamic (upright) MRI, and stereoradiography (EOS).
  • Comparison of findings from dynamic techniques versus conventional supine imaging.

Main Results:

  • Advanced techniques can unmask dynamic spinal pathologies not visible on standard supine scans.
  • Standing radiographs are a foundational physiologic imaging method.
  • Specific techniques like upright MRI may reduce sensitivity for detecting sinister pathologies.

Conclusions:

  • Dynamic spine imaging offers superior visualization of pathologies missed by static methods.
  • Careful selection of advanced imaging techniques is crucial for accurate diagnosis.
  • While beneficial, certain dynamic methods require cautious application due to potential trade-offs in sensitivity.