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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.
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Imaging Studies IV: Magnetic Resonance Imaging01:27

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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 for Cardiovascular System IV: CMRI01:21

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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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Updated: Aug 20, 2025

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
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Proposed Safety Guidelines for Patient Assistants in an Open MRI Environment.

Sukhoon Oh1, Seon-Eui Hong2, Hyung-Do Choi2

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Patient assistants in open MRI scans may be exposed to radio frequency (RF) radiation. Numerical simulations show specific poses increase RF exposure, but latex gloves significantly reduce it, enhancing safety.

Keywords:
SARopen MRI systempatient assistantplanar RF coilsafety guideline

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Area of Science:

  • Medical Imaging
  • Biomedical Engineering
  • Radiological Safety

Background:

  • Open magnetic resonance imaging (MRI) systems facilitate patient-assistant interaction, crucial for interventional procedures and patient comfort.
  • Current safety regulations primarily focus on patient radio frequency (RF) safety, neglecting potential risks to patient assistants in high-magnetic field environments (up to 1.2 T).

Purpose of the Study:

  • To investigate the RF exposure levels experienced by patient assistants during 1.2 T open MRI scans.
  • To evaluate the influence of different assistant poses and the use of latex gloves on specific absorption rate (SAR) levels.

Main Methods:

  • Numerical simulations were conducted on five distinct patient assistant poses within a 1.2 T open MRI system.
  • The 10-g averaged specific absorption rate (SAR) was analyzed for each simulated pose, with and without latex gloves.

Main Results:

  • Patient assistants can experience significant RF exposure, with observed SAR levels reaching up to 29.8% of the patient's SAR.
  • Wearing latex gloves by the patient assistant resulted in a substantial 63.7% reduction in the 10-g averaged SAR level.

Conclusions:

  • Patient assistant poses and the use of protective gear like latex gloves are critical factors influencing RF exposure during open MRI.
  • Recommendations include updating MRI screening forms to include guidelines on assistant positioning and the use of gloves to mitigate potential RF hazards.