2025 MRI PHYSICS PRACTICE GUIDE EXAM QUESTIONS
WITH ANSWERS 2025/2026 GRADED A+
What occurs after an oscillating nuclei is exposed to a frequency matching its Larmor
frequency?
a. resonance
b. decimation
c. nothing
d. gradation - resonance
Faraday's Law of Induction states that if a magnetic field is moved through/near a loop
of wire, it will create _______ in the wire.
a. resonance
b. a magnetic wave
c. an electrical current
d. torque - an electrical current
What are the three safety labels that devices or objects can be classified as? - MR safe,
MR conditional, and MR unsafe
The sum of the magnetic moments associated with the nuclei in the magnetic field is
known as:
a. B1
b. B0
c. the Net Magnetization
d. a spectrum of EM power - the Net magnetization
The Slight attraction to a magnet can be termed as: - paramagnetism
Upon entering the MRI environment, a patient's hydrogen protons begin to:
a. oppose the main magnetic field
b. align with the main magnetic field
c. become randomly orientated to the main magnetic field
d. either align or oppose the main magnetic field - either align or oppose the main
magnetic field
Calculate the precessional frequency of H at 3T, using the Larmor equation where the
constant for H is 42.57. - between 127.6 and 127.7
List the four major components that comprise the MRI system. - Main magnet (B0), the
gradient magnet, the shim magnets and the RF magnet
T/F The Body coil can be used for transmitting and receiving RF signals in the MR
imaging process. - true
,In order to obtain maximum voltage induction with the coil, the NMV should be
positioned near the ________ following the RF pulse.
a. biplane
b. diagonal plane
c. transverse plane
d. longitudinal plane - transverse plane
Match the following terms with their like term:
1. in-phase
2. Out-of-phase
3. Sign-up nuclei
4. spin-down nuclei
5. T2 decay
6. T1 recovery
WORD BANK: B1, Gradient, Parallel, spin-lattice relaxation, B0, coherent, anti-parallel,
net magnetic vector, incoherent, spin-spin relaxation - 1. coherent
2. incoherent
3. parallel
4. anti-parallel
5. spin-spin relaxation
6. spin-lattice relaxation
T1 weighted sequences are acquired using:
a. short TR and long TE
b. long TR and short TE
c. short TR and short TE
d. long TR and long TE - short TR and short TE
The repetition time in SE is defined as the:
a. time between the 90 degree and 180 degree RF pulses
b. time between the 180 degree pulses
c. time between two 90 degree RF pulses
d. parameter that affects the T2 contrast on the MR image - time between two 90 RF
pulses
Which of the following parameters controls the amount of contrast seen on a T1
weighted image?
a. T2
b. TE
c. Inversion time
d. TR - TR
T2* images are susceptible to inhomogeneities, which are more prominently seen on
________ images.
a. SE
, b. FSE
c. GE
d. IR - GE
What is the process called when a proton exchanges its energy with another proton?
a. T1 relaxation
b. dephasing
c. spin-spin relaxation
d. spin-lattice relaxation - spin-spin relaxation
Which of the following are included in T2* contrast?
1. spin-spin interactions
2. magnetic field inhomogeneities
3. magnetic susceptibility artifacts - 1, 2, 3
A pulse sequence consisting of the initial 90 RF pulse, followed by five successive 180
RF pulses is known as:
a. a turbo spin echo
b. an inversion recovery
c. a gradient echo
d. transverse decay - a turbo spin echo
a pulse sequence consists of the initial excitation pulse, five successive 180 RF pulses,
followed by another 90 RF pulse. How many echoes will be collected? - 5
During a gradient echo sequence, the collected echo is formed by the initial RF pulse
and rephased using:
a. a variable flip angle
b. a gradient
c. a 180 degree RF pulse
d. a 90 degree RF pulse - a gradient
This RF pulse sequence typically begins with 180 RF pulse, followed by a 90 RF pulse,
and then 180 refocusing pulse, it is used to suppress specific tissue types to enhance
contrast.
a. steady state gradient echo
b. field echo
c. FSE
d. IR - IR
In order to obtain a T1 weighted gradient-echo:
a. a large flip angle, a long TE and a long TR is utilized
b. a large flip angle, a short TE and a short TR is utilized
c. a small flip angle, a long TE and a long TR is utilized
d. a small flip angle, a short TE and a short TR is utilized - a large flip angle, a short TE
and a short TR is utilized
WITH ANSWERS 2025/2026 GRADED A+
What occurs after an oscillating nuclei is exposed to a frequency matching its Larmor
frequency?
a. resonance
b. decimation
c. nothing
d. gradation - resonance
Faraday's Law of Induction states that if a magnetic field is moved through/near a loop
of wire, it will create _______ in the wire.
a. resonance
b. a magnetic wave
c. an electrical current
d. torque - an electrical current
What are the three safety labels that devices or objects can be classified as? - MR safe,
MR conditional, and MR unsafe
The sum of the magnetic moments associated with the nuclei in the magnetic field is
known as:
a. B1
b. B0
c. the Net Magnetization
d. a spectrum of EM power - the Net magnetization
The Slight attraction to a magnet can be termed as: - paramagnetism
Upon entering the MRI environment, a patient's hydrogen protons begin to:
a. oppose the main magnetic field
b. align with the main magnetic field
c. become randomly orientated to the main magnetic field
d. either align or oppose the main magnetic field - either align or oppose the main
magnetic field
Calculate the precessional frequency of H at 3T, using the Larmor equation where the
constant for H is 42.57. - between 127.6 and 127.7
List the four major components that comprise the MRI system. - Main magnet (B0), the
gradient magnet, the shim magnets and the RF magnet
T/F The Body coil can be used for transmitting and receiving RF signals in the MR
imaging process. - true
,In order to obtain maximum voltage induction with the coil, the NMV should be
positioned near the ________ following the RF pulse.
a. biplane
b. diagonal plane
c. transverse plane
d. longitudinal plane - transverse plane
Match the following terms with their like term:
1. in-phase
2. Out-of-phase
3. Sign-up nuclei
4. spin-down nuclei
5. T2 decay
6. T1 recovery
WORD BANK: B1, Gradient, Parallel, spin-lattice relaxation, B0, coherent, anti-parallel,
net magnetic vector, incoherent, spin-spin relaxation - 1. coherent
2. incoherent
3. parallel
4. anti-parallel
5. spin-spin relaxation
6. spin-lattice relaxation
T1 weighted sequences are acquired using:
a. short TR and long TE
b. long TR and short TE
c. short TR and short TE
d. long TR and long TE - short TR and short TE
The repetition time in SE is defined as the:
a. time between the 90 degree and 180 degree RF pulses
b. time between the 180 degree pulses
c. time between two 90 degree RF pulses
d. parameter that affects the T2 contrast on the MR image - time between two 90 RF
pulses
Which of the following parameters controls the amount of contrast seen on a T1
weighted image?
a. T2
b. TE
c. Inversion time
d. TR - TR
T2* images are susceptible to inhomogeneities, which are more prominently seen on
________ images.
a. SE
, b. FSE
c. GE
d. IR - GE
What is the process called when a proton exchanges its energy with another proton?
a. T1 relaxation
b. dephasing
c. spin-spin relaxation
d. spin-lattice relaxation - spin-spin relaxation
Which of the following are included in T2* contrast?
1. spin-spin interactions
2. magnetic field inhomogeneities
3. magnetic susceptibility artifacts - 1, 2, 3
A pulse sequence consisting of the initial 90 RF pulse, followed by five successive 180
RF pulses is known as:
a. a turbo spin echo
b. an inversion recovery
c. a gradient echo
d. transverse decay - a turbo spin echo
a pulse sequence consists of the initial excitation pulse, five successive 180 RF pulses,
followed by another 90 RF pulse. How many echoes will be collected? - 5
During a gradient echo sequence, the collected echo is formed by the initial RF pulse
and rephased using:
a. a variable flip angle
b. a gradient
c. a 180 degree RF pulse
d. a 90 degree RF pulse - a gradient
This RF pulse sequence typically begins with 180 RF pulse, followed by a 90 RF pulse,
and then 180 refocusing pulse, it is used to suppress specific tissue types to enhance
contrast.
a. steady state gradient echo
b. field echo
c. FSE
d. IR - IR
In order to obtain a T1 weighted gradient-echo:
a. a large flip angle, a long TE and a long TR is utilized
b. a large flip angle, a short TE and a short TR is utilized
c. a small flip angle, a long TE and a long TR is utilized
d. a small flip angle, a short TE and a short TR is utilized - a large flip angle, a short TE
and a short TR is utilized
