MRI PHYSICS ACTUAL EXAM 2026 VERIFIED
QUESTIONS AND SOLUTIONS
◉A screening questionnaire for patients about to undergo MRI
should include information about
Select one:
a. prior injuries
b. prior surgery and implants
c. pregnancy
d. all of the choices. Answer: d. all of the choices
◉An image acquired using a flip angle of 90º, TR of 400 msec (short)
and a TE of 15 msec (short) produces which type of image contrast?
Select one:
a. T1 weighted
b. T2 weighted
c. T2* weighted
d. PD weighted. Answer: a. T1 weighted
◉The isotope of Hydrogen that is most relevant in MRI is:
Select one:
,a. Hydrogen - 1
b. Protium
c. Deuterium
d. Tritium. Answer: b. Protium
◉Spins aligned in the anti-parallel direction are in:
Select one:
a. high energy state
b. low energy state. Answer: a. high energy state
◉T1 relaxation time is defined as the length of time for what
percentage of the longitudinal magnetization to be recovered?
Select one:
a. 63%
b. 68%
c. 69%
d. 100%. Answer: a. 63%
◉The MRI exclusion zone for patients with pacemakers,
neurostimulators, or other metallic implants is at the ____________
level.
Select one:
, a. 1 guass
b. 5 gauss
c. 15 gauss
d. 20 guass. Answer: b. 5 gauss
◉The force of attraction an object experiences to a magnetic field
depends on which of the following factors?
Select one:
a. the mass of the object
b. the ferromagnetic properties of the object
c. the field strength and rate of change in field strength over distance
d. all of the choices. Answer: d. all of the choices
◉In a wave, an increase in frequency will cause:
Select one:
a. an increase in wavelength
b. a decrease in amplitude
c. an increase in amplitude
d. a decrease in wavelength. Answer: d. a decrease in wavelength
◉To calculate the precessional frequency, the strength of the static
magnetic field is multiplied by a constant known as:
QUESTIONS AND SOLUTIONS
◉A screening questionnaire for patients about to undergo MRI
should include information about
Select one:
a. prior injuries
b. prior surgery and implants
c. pregnancy
d. all of the choices. Answer: d. all of the choices
◉An image acquired using a flip angle of 90º, TR of 400 msec (short)
and a TE of 15 msec (short) produces which type of image contrast?
Select one:
a. T1 weighted
b. T2 weighted
c. T2* weighted
d. PD weighted. Answer: a. T1 weighted
◉The isotope of Hydrogen that is most relevant in MRI is:
Select one:
,a. Hydrogen - 1
b. Protium
c. Deuterium
d. Tritium. Answer: b. Protium
◉Spins aligned in the anti-parallel direction are in:
Select one:
a. high energy state
b. low energy state. Answer: a. high energy state
◉T1 relaxation time is defined as the length of time for what
percentage of the longitudinal magnetization to be recovered?
Select one:
a. 63%
b. 68%
c. 69%
d. 100%. Answer: a. 63%
◉The MRI exclusion zone for patients with pacemakers,
neurostimulators, or other metallic implants is at the ____________
level.
Select one:
, a. 1 guass
b. 5 gauss
c. 15 gauss
d. 20 guass. Answer: b. 5 gauss
◉The force of attraction an object experiences to a magnetic field
depends on which of the following factors?
Select one:
a. the mass of the object
b. the ferromagnetic properties of the object
c. the field strength and rate of change in field strength over distance
d. all of the choices. Answer: d. all of the choices
◉In a wave, an increase in frequency will cause:
Select one:
a. an increase in wavelength
b. a decrease in amplitude
c. an increase in amplitude
d. a decrease in wavelength. Answer: d. a decrease in wavelength
◉To calculate the precessional frequency, the strength of the static
magnetic field is multiplied by a constant known as:
