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Related Concept Videos

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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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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Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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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.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
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Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

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Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
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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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Related Experiment Video

Updated: May 6, 2026

Simultaneous PET/MRI Imaging During Mouse Cerebral Hypoxia-ischemia
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Surviving a stressful MIBI scan.

Robert Gooch, Lisa Bryski, Ewa Courvoisier-Grzywacz

    CJEM
    |November 2, 2013
    PubMed
    Summary

    Adverse events from dipyridamole/technetium sestamibi (MIBI) scans are rare. This case highlights a patient experiencing two delayed asystolic episodes post-MIBI scan, emphasizing the need for emergency preparedness.

    Area of Science:

    • Cardiology
    • Nuclear Medicine
    • Emergency Medicine

    Background:

    • Dipyridamole/technetium sestamibi scans (MIBI) are standard for diagnosing and assessing risk in coronary artery disease.
    • Adverse events associated with MIBI scans are exceptionally uncommon.

    Observation:

    • A 64-year-old male experienced two episodes of asystole following dipyridamole infusion during a MIBI scan.
    • The second asystolic event occurred in the emergency department 40 minutes post-transfer from the Cardiac Stress Test Laboratory.

    Findings:

    • This case represents the first reported instance of two distinct asystolic episodes after a MIBI scan.
    • A delayed asystolic episode occurring significantly after the procedure was observed.

    Implications:

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    • Emergency physicians must be vigilant for potential asystole following MIBI scans.
    • Aminophylline, the antidote for dipyridamole, should be accessible in emergency departments managing post-pharmacologic stress test patients.
    • Patients experiencing asystole post-dipyridamole infusion may require extended cardiac monitoring due to the risk of recurrent events.