MRI Safety and Emergency Procedures

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Questions and Answers

What is the primary mechanism by which Gadolinium decreases T1 relaxation times?

  • By reducing the viscosity of the solution
  • By aligning the rotation of molecules with the Larmor frequency (correct)
  • By increasing the temperature of the solution
  • By increasing the magnetic field strength

What is the primary hazard associated with magnetic quench?

  • Loud noise and warning message
  • Dense white vapor and helium meter dropping (correct)
  • Tilting of the image on the image screen
  • All of the above

What is the purpose of introducing contrast media in MRI scans?

  • To increase the magnetic field strength
  • To selectively affect the T1 and T2 relaxation times in tissues (correct)
  • To increase the temperature of the solution
  • To reduce the viscosity of the solution

What is the effect of Gadolinium on the signal intensity of T1 weighted images?

<p>It increases the signal intensity (C)</p> Signup and view all the answers

What is the characteristic property of a solution that affects the rotation of molecules?

<p>Frequency of rotation (D)</p> Signup and view all the answers

What should be done in the event of a magnetic quench?

<p>Evacuate the patient and personnel from the scan room and close the scan room door (C)</p> Signup and view all the answers

What is a potential risk associated with the use of Gadolinium-based contrast agents in MRI?

<p>Renal toxicity in individuals with impaired kidney function (D)</p> Signup and view all the answers

What is a primary concern related to patient comfort during MRI scans?

<p>Claustrophobia and anxiety related to enclosed spaces (D)</p> Signup and view all the answers

What design feature in modern MRI scanners is expected to reduce the number of failed examinations?

<p>Shorter and wider bores (C)</p> Signup and view all the answers

What is a method used to improve patient comfort and reduce movement during MRI scans?

<p>Head coil mirrors to maintain visible contact with staff outside the scanner (A)</p> Signup and view all the answers

Why are emergency preparedness protocols necessary in MRI facilities?

<p>To respond to medical emergencies during scans (C)</p> Signup and view all the answers

What is a possible strategy used to alleviate patient anxiety during MRI scans?

<p>Playing music through headphones (C)</p> Signup and view all the answers

What is an important detail to share with the patient before an MRI exam?

<p>The duration of the procedure (A)</p> Signup and view all the answers

Why is it important for the technologist to remember the patient's name?

<p>To establish a rapport with the patient (C)</p> Signup and view all the answers

What instruction should be given to the patient regarding breathing or swallowing during an MRI exam?

<p>Rehearse holding their breath and swallowing at specific times (B)</p> Signup and view all the answers

Which of the following patients is unsuitable for an MRI exam?

<p>A patient with an aneurysm clip (C)</p> Signup and view all the answers

What is a potential hazard for patients with certain metallic objects during an MRI exam?

<p>Heating or movement of the metal object (A)</p> Signup and view all the answers

What should patients be checked for before an MRI exam?

<p>MR incompatible objects (A)</p> Signup and view all the answers

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