ARMRIT EXAM PREP NEWEST 2026/2027 ACTUAL EXAM
COMPLETE 240 QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW
VERSION!!
the strength of very large magnetic fields like those employed in MRI systems, the
SI unit most commonly used is:
A) Tesla
B) Gauss
C) Kilogauss
D) militesla - Correct Answer-Tesla
the larmor frequency of hydrogen protons in a 1.5 tesla magnetic field is:
A) 6.4 MHZ/Tesla
B) 12.8 MHz/Tesla
C) 25.5 MHz/tesla
D) 63.9 MHz/tesla - Correct Answer-63.9 MHz/Tesla
In MR imaging, for chemical substance to be affected by the main magnetic field
and the radio-wave it must contain an:
A) Odd number of electrons
B) Odd number of total protons and neutrons
C) Even number of total electrons and neutrons
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D) even number of protons - Correct Answer-Odd number of total protons and
neutrons
A 1.5T magnetic field is equal to:
A) 150 gauss
B) 1500 gauss
C) 15,000 gauss
D) 150,000 gauss - Correct Answer-15,000 gauss
the components of the gyromagnetic ratio are:
A) stimulation to relaxation
B) protons to electrons
C) magnetic moment to angular momentum
D) main magnetic field to radio-frequency signal - Correct Answer-magnetic
moment to angular momentum
fast transition phenomenon and entry phenomenon are theories that explain
which of the following characterisitics:
A) T1 effects
B) T2 effects
C) hydrogen concentration
D) veolcity effects - Correct Answer-Velocity effects
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the effects of main magnetic field inhomogeneities on the FID signal are corrected
for in the spin echo sequence by applying a second radio frequency pulse. the flip
angle of this radio frequency pulse is:
A) 45 degrees
B) 60 degrees
C) 90 degrees
D) 180 degrees - Correct Answer-180 degrees
of the following statements, which describes part of the basic MR imaging
process:
A) a patient is placed isocenter to ionizing radiation
B) the patient is exposed to ionizing radiation
C) the generated image contains hypersense and hypodense areas
D) radio frequency signals interact with hydrogen protons - Correct Answer-radio
frequency signals interact with hydrogen protons
which type of electromagnetic coils correct inhomogeneities in the main magnetic
field?
A) gradient coils
B) radio frequency coils
C) shim coils - Correct Answer-shim coils
immediately after an initial 90 degree radio frequency pulse is turned off, the
hydrogen protons will begin to:
A) Rephase
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B) Dephase
C) Stay in the transverse plane
D) Stay in phase - Correct Answer-Dephase
tissues that are very efficient at spin-lattice interactions near the larmor
frequency, such as fatty tissues should have:
A) Low T1 values and produce hyperintense signals
B) High T1 values and produce hyperintense signals
C) High T1 values and produce hypointense signals
D) Low T1 values and produce hypointense signals - Correct Answer-Low T1 values
and produce hyperintense signals
Different tissues that have signals that appear similar on an MR image are
described as:
A) hypointense
B) hyperintense
C) isointense
D) isodense - Correct Answer-isointense
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
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