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Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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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...
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Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

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Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
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Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

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Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
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Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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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...
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Radiological Investigation I: X-ray and CT01:30

Radiological Investigation I: X-ray and CT

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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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Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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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...
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Related Experiment Video

Updated: Dec 20, 2025

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
08:51

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla

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Anaphylactic reaction to MRI contrast agent.

Line Broch, Simone Wester, Anniken Haslund

    Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
    |May 29, 2020
    PubMed
    Summary

    Routine magnetic resonance imaging (MRI) with contrast agents, while generally safe, can lead to rare but serious complications like anaphylactic shock. Careful patient selection is crucial for MRI safety.

    Area of Science:

    • Radiology
    • Medical Imaging
    • Neurology

    Background:

    • Magnetic resonance imaging (MRI) is a widely used diagnostic tool with a generally low complication rate.
    • Contrast agents, while enhancing image quality, carry a small risk of adverse reactions.
    • Routine MRI examinations, despite their safety profile, can rarely lead to severe complications.

    Purpose of the Study:

    • To highlight a rare but severe complication associated with MRI contrast agents.
    • To emphasize the importance of careful indication and patient assessment prior to MRI.
    • To discuss the potential for anaphylactic shock during MRI procedures.

    Main Methods:

    • Case report detailing a patient's experience with MRI contrast administration.
    • Review of the potential complications associated with gadolinium-based contrast agents.

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  • Analysis of the clinical presentation and management of anaphylactic shock post-MRI.
  • Main Results:

    • A patient experienced a generalized seizure and shock approximately one minute after intravenous administration of gadoteric acid (Dotarem®).
    • The event was consistent with a severe anaphylactic reaction to the MRI contrast agent.
    • This case illustrates that even routine MRI examinations can precipitate serious adverse events.

    Conclusions:

    • Anaphylactic shock is a rare but significant complication of MRI with contrast enhancement.
    • The necessity of a clear clinical indication for MRI examinations is paramount.
    • Risk-benefit assessment and patient monitoring are essential for MRI safety.