Test Bank 2026/ ARMRIT MRI Technologist
Certification Test 2026 (A Review of 250 Recent Exam
Questions with 100% Correct Answers)
in a large main magnetic field such as those employed in MRI, the motion of a
hydrogen proton has been described as wobbling like a spinning top. this motion is
called
A) precession
B) resonance
C) frequency
D) angular momentum - ANSWER-precession
when describing overall image quality, which best describes the difference in
signal intensity between 2 adjacent structures divided by noise:
A) resolution
B) signal to noise ration
C) signal averaging
D) interleaving
E) contrast to noise ratio - ANSWER-contrast to noise ratio
there are ____________ of _____________ serving the purpose of providing
spatial information within the MR signal
A) 3 pairs/ gradient coils
B) 2 pairs/ shim coils
C) 2 pairs/ RF amplifiers
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,D) 6 pairs/ solenoid coils - ANSWER-3 pairs/ gradient coils
the NMV will generate a stronger MR signal if the alignment is at:
A) 180 degrees
B) 120 degrees
C) 90 degrees
D) 360 degrees - ANSWER-90 degrees
in spatial localization, an efficient digital implementation of the mathematical
method for converting a time varying signal into its frequency and/or phase
components that is actually performed by the MRI computer is known as:
A) fourier transform
B) fast fourier transform
C) free induction decay
D) fast spin echo - ANSWER-fast fourier transform
a paramagnetic, rare earth substance, attached to a chelating ligand for MRI
enhancement purposes is:
A) ferric chloride
B) gallium
C) gadolinium
D) ferric nitrate
E) Mn(II)salts - ANSWER-gadolinium
In 1990, Lauffer described 2 types of enhancement media, the mechanism of the
T1 agent is to:
A) increase T1 relaxation time, therefore emitting low signal
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,B) decrease T1 relaxation time, therefore emitting low signal
C) increase T1 relaxation time, therefore emitting high signal
D) decreasing T1 relaxation time, therefore emitting high signal - ANSWER-
increase T1 relaxation time, therefore emitting high signal
In 1990, Lauffer described 2 types of enhancement media, the mechanism of the
T2 agent is to:
A) increase T2 relaxation time, therefore emitting low signal
B) decrease T2 relaxation time, therefore emitting low signal
C) increase T2 relaxation time, therefore emitting high signal
D) decreasing T2 relaxation time, therefore emitting high signal - ANSWER-
increase T2 relaxation time, therefore emitting low signal
of the following enhancement agents, which is still investigation?
A) hepatobiliary
B) liver/spleen
C) blood pool
D) tumor specific
E) all - ANSWER-all
the normal pituitary gland should appear bright following injection of a gadolinium
enhancement agent
true or false - ANSWER-true
gadolinium enhancement agents will readily pass through the normal blood brain
barrier
true or false - ANSWER-false
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, combining a metal ion with a ligand reduces their tendency to bind to proteins,
enzymes, or membranes. the degree to which they dissociate is a measure of their:
A) osmolarity
B) chelating ability
C) toxicity
D) osmolaity
E) osmotic load - ANSWER-toxicity
of the following MRI enhancement agents, which are FDA approved for clinical
use?
A) Gd-DTPA
B) Gd-HP-DO3A
C) Gd-DTPA-BMA
D) all - ANSWER-all
enhancement can be demonstrated on which of the following pulse sequences post
gadolinium injection:
A) T1 weighted
B) gradient-echo
C) inversion recovery
D) all - ANSWER-all
SAR (specific absorption rate), set by the FDA, is the rate that RF energy is
introduced to body tissue, measured in watts per kilogram.
true or false - ANSWER-true
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