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MRI Physics Final Exam Questions and Answers (Latest Update 2024) 100% Questions
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MRI Physics Final Exam Questions and Answers (Latest Update 2024) 100% Questions
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MRI Physics Final Exam Questions andAnswers (Latest Update 2024) 100%
Questions
all the following are artifacts in MRI except - Correct Answer
✅ beam hardening
_____ is defined as the strength of the gradient over distance -
Correct Answer ✅ slew rate
.5T is equal to _____ Gauss. - Correct Answer ✅ 5,000
A FLAIR inversion sequence is utilized to null - Correct
Answer ✅ CSF
A STIR inversion sequence is utilized to null - Correct
Answer ✅ fat
a double echo, spin echo pulse sequence normally results in
____ - Correct Answer ✅ T2 and proton density weighted
an inversion recovery is a pulse sequence that begins with a
____ degree inverting pulse - Correct Answer ✅ 180
,MRI Physics Final Exam Questions and
Answers (Latest Update 2024) 100%
Questions
a second (or additional) spin or wobble of the magnetic
moment is defined as_____ - Correct Answer ✅ precession
hydrogen precesses at approximately ______ MHz/T in a .5T
MRI unit - Correct Answer ✅ 21
the time taken to rephase after the application of the 180
degree RF equals the time to dephase when the - Correct
Answer ✅ TAU
______ reflects the relationship balance between spin up and
spin down nuclei. - Correct Answer ✅ net magnetification
vector
"active" shielding work to ____ , while passive shielding work
to _____ - Correct Answer ✅ shrink the magnetic field,
contain the magnetic field
, MRI Physics Final Exam Questions and
Answers (Latest Update 2024) 100%
Questions
to "null" a signal is to _____ a signal - Correct Answer ✅
reduce
data points in k-space are converted to frequency amplitude
in the frequency domain by a process called - Correct
Answer ✅ fast fourier transfer
which of the following is incorrect? - Correct Answer ✅ data
acquired in the central lines of k-space contribute to
resolution, while data acquired in the outer lines contribute to
_____ extrapolates right side data and places it on the left
side - Correct Answer ✅ partial echo imaging
for which of the following is it crucial to have a TR that is
shorter than the T1 and T2 times of the tissue - Correct
Answer ✅ steady state
homogeneity is measured in: - Correct Answer ✅ ppm
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