12/14/24, 7:23 AM ARRT MRI exam review 2024 COMPLETE EXAM QUESTIONS AND VERIFIED ANSWERS| 100% ACCURATE SOLUTIONS…
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ARRT MRI exam review 2024 COMPLETE EXAM
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Terms in this set (325)
what is the most hydrogen
abundant element in the
human body?
nuclei that are available net spin
for MRI are those that
exhibit a _________
low energy = spin up = parallel
_______
high energy = spin down antiparallel
= __________
https://quizlet.com/985125689/arrt-mri-exam-review-2024-complete-exam-questions-and-verified-answers-100-accurate-solutionsalready-graded… 1/10
, 12/14/24, 7:23 AM ARRT MRI exam review 2024 COMPLETE EXAM QUESTIONS AND VERIFIED ANSWERS| 100% ACCURATE SOLUTIONS…
when the body is in the magnetic field, spins are
thermal equilibrium
aligned, and nothing else has happened
B0 refers to large magnetic field of the MRI scanner
at thermal equilibrium greater
there are a ________ portion
of spins with their
magnetic moments
aligned in the same
direction as B0 than
against it
the reason why SNR the NMV also increases in size the stronger B0
increases at higher field
strengths is because
1 hertz = 1 cycle per second
larmour equation W0 = y x B0
W0 = Larmour frequency (precessional frequency)
what do the parts of the
y = gyromagnetic ratio (42.58 MHz/T for hydrogen)
larmor equation mean?
B0 = Field strength
what is the precessional 63.87 MHz
frequency for hydrogen (42.58 MHz/T x 1.5T)
at 1.5T?
out of phase or magnetic moments of hydrogen are at different
incoherent places on the precessional path at a moment in time
magnetic moments of hydrogen are at the same
in phase or coherent
place on the precessional path at a moment in time
what two things do you 1) coherent
need to get signal? 2) transverse magnetization
the position of a magnetic moment of a spin on its
phase refers to
precessional path at any moment in time
B1 field is used to deliver causes 1) transverse magnetization
an RF pulse which does and 2) phase precession
what 2 things
https://quizlet.com/985125689/arrt-mri-exam-review-2024-complete-exam-questions-and-verified-answers-100-accurate-solutionsalready-graded… 2/10
Get 20% off Quizlet Plus after free trial Claim discount
ARRT MRI exam review 2024 COMPLETE EXAM
QUESTIONS AND VERIFIED ANSWERS| 100%
ACCURATE SOLUTIONS|ALREADY GRADED A+
Practice questions for this set
Learn
Studied 7 terms
Nice work, you're crushing it
Continue studying in Learn
Terms in this set (325)
what is the most hydrogen
abundant element in the
human body?
nuclei that are available net spin
for MRI are those that
exhibit a _________
low energy = spin up = parallel
_______
high energy = spin down antiparallel
= __________
https://quizlet.com/985125689/arrt-mri-exam-review-2024-complete-exam-questions-and-verified-answers-100-accurate-solutionsalready-graded… 1/10
, 12/14/24, 7:23 AM ARRT MRI exam review 2024 COMPLETE EXAM QUESTIONS AND VERIFIED ANSWERS| 100% ACCURATE SOLUTIONS…
when the body is in the magnetic field, spins are
thermal equilibrium
aligned, and nothing else has happened
B0 refers to large magnetic field of the MRI scanner
at thermal equilibrium greater
there are a ________ portion
of spins with their
magnetic moments
aligned in the same
direction as B0 than
against it
the reason why SNR the NMV also increases in size the stronger B0
increases at higher field
strengths is because
1 hertz = 1 cycle per second
larmour equation W0 = y x B0
W0 = Larmour frequency (precessional frequency)
what do the parts of the
y = gyromagnetic ratio (42.58 MHz/T for hydrogen)
larmor equation mean?
B0 = Field strength
what is the precessional 63.87 MHz
frequency for hydrogen (42.58 MHz/T x 1.5T)
at 1.5T?
out of phase or magnetic moments of hydrogen are at different
incoherent places on the precessional path at a moment in time
magnetic moments of hydrogen are at the same
in phase or coherent
place on the precessional path at a moment in time
what two things do you 1) coherent
need to get signal? 2) transverse magnetization
the position of a magnetic moment of a spin on its
phase refers to
precessional path at any moment in time
B1 field is used to deliver causes 1) transverse magnetization
an RF pulse which does and 2) phase precession
what 2 things
https://quizlet.com/985125689/arrt-mri-exam-review-2024-complete-exam-questions-and-verified-answers-100-accurate-solutionsalready-graded… 2/10
