Magnetic Resonance Imaging (MRI) Practice Test

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Study for the Magnetic Resonance Imaging Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Be exam-ready!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which method is NOT a way to perform shimming in MRI?

Turning the shim coil off and on rapidly
Adjusting the shim coils for homogeneity
Manipulating gradient strengths
Using passive shimming techniques

The correct answer is: Turning the shim coil off and on rapidly

The correct answer highlights a method that does not pertain to shimming in MRI. Shimming is a critical process in magnetic resonance imaging aimed at improving magnetic field homogeneity across the imaging volume. Effective shimming involves adjusting specific coils in the MRI system to ensure the magnetic field is uniform, which ultimately enhances image quality. Turning the shim coil off and on rapidly would not achieve the desired uniformity; rather, this approach could lead to instability or fluctuations in the magnetic field. Instead, practitioners typically adjust the shim coils for homogeneity and may employ passive techniques or manipulate gradient strengths to correct field inhomogeneities. Each of these methods contributes to achieving an optimal imaging environment, but the rapid on-off technique is not a recognized shimming method.