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MRI physics Final Exam Questions and Answers (Latest Update 2024) 280 Questions
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MRI physics Final Exam Questions and Answers (Latest Update 2024) 280 Questions
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MRI physics Final Exam Questions andAnswers (Latest Update 2024) 280
Questions
What type of nonionizing electromagnetic radiation does MRI
utilize? - Correct Answer ✅ Radio Frequency
Preventing potential serious injury or death from strong
magnetic field strengths requires:
1. a knowledgeable and mindful MR technologist
2. Controlled access to the magnetic field
3. a detailed medical history of anyone entering the room -
Correct Answer ✅ 1, 2, and 3
When protons spin in place within an atom, they create:
a. a small magnetic field
b. an electrical charge
c. pressure on the electrons
d. a small hydrogen moment - Correct Answer ✅ a. a small
magnetic field
The process of producing voltage using magnetic fields is
called:
,MRI physics Final Exam Questions and
Answers (Latest Update 2024) 280
Questions
a. static electricity production
b. non-magnetic generation
c. electromagnetic induction
d. the Larmar equation - Correct Answer ✅ c.
electromagnetic induction
The steepness of the gradient slope or the power of the
gradient is termed the:
a. gradient direction
b. gradient amplitude
c. gradient rise time
d. gradient slew rate - Correct Answer ✅ B. gradient
amplitude
1 Tesla is equal to _________ Gauss. - Correct Answer ✅
10,000
The static magnetic field of a permanent magnet generally
follows which direction?
,MRI physics Final Exam Questions and
Answers (Latest Update 2024) 280
Questions
a. Vertically from the ceiling to the floor
b. horizontally from the inner bore to the wall
c. horizontally along the long axis of the patients body in the
bore
d. in a straight line from the inner bore to the wall
perpendicular to the bore - Correct Answer ✅ a. vertically
from the ceiling to the floor
Precessional frequency is determined by the ___________
equation.
a. Precessional
b. Magnetic Frequency
c. Larmor
d. Faraday - Correct Answer ✅ c. Larmor
Adding additional electrical coils to maintain magnetic field
homogeneity is called:
a. active shimming
b. active shielding
, MRI physics Final Exam Questions and
Answers (Latest Update 2024) 280
Questions
c. passive shimming
d. gross adjustments - Correct Answer ✅ a. active
shimming
The ________ line is a perimeter around the scanner defining
where the static field is potentially hazardous (near the foot
end of tabletop)
a. 3.0 T line
b. 3-gauss circle
c. 1.5 T circle
d. 5-gauss line - Correct Answer ✅ d. 5-gauss line
The rapid loss of voltage induced within the coil after the RF
excitation due to relaxation is called:
a. longitudinal precession
b. transverse magnetization
c. repetition time
d. free induction decay - Correct Answer ✅ free induction
decay
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