MRSO PACKAGED WITH FINAL TEST 2026 QUESTIONS
WITH CORRECT ANSWERS GRADED A+
● Peripheral nerve stimulation can be described by which of the following? a. Faraday's law
of induction b. Ohm's law c. Lenz's law d. Planks Law. Answer: b. Faraday's law of induction
(describes the induction of electrical current in the presence of a changing magnetic field).
Lenz's force describes the opposing forces created. Ohm's law deals with the resistance of
current along a wire.
● Gad contrast has been found in the body in what form? Select all that apply. a.
Water-soluble b. Non-water soluble. Answer: a, b
● Which of the following would we expect to be the loudest sequence? a. GRASS b. Fast spin
echo c. Conventional gradient sequence d. FLAIR. Answer: a. GRASS The FLAIR and fast
spin echo are considered spin echo sequences; they do not have extremely fast changing
gradient, so will not produce as much noise.
● Which of the following has a steeper spatial magnetic gradient? a. Vertical B0 b. Horizontal
B0. Answer: a. Vertical B0
● The strongest gradient strength will reach maximum strength how far from isocenter? a.
5-20 cm b. 20-40 cm c. 30-60 cm d. 5-15 cm. Answer: c. 30-60 cm
● Which of the following is true of gad and breastfeeding mothers? Select all that apply. a.
Gad is found in breast milk in a stable and chelated form b. It is thought that gad contrast may
alter the taste of breastmilk. c. Available data suggests that breastmilk should be pumped and
discarded for 24 hours after the IV dose d. 20% of the intravascular dose would be excreted
into the breastmilk within the first 24 hours.. Answer: a, b
● Which of the following will influence peripheral nerve stimulation? a. Static magnetic field b.
Magnetic field at isocenter c. Patient weight d. Slew rate. Answer: d. Slew rate
● Which of the following pulse sequences would we expect to see the least patient heating?
a. Incoherent gradient b. STIR c. Fast spin echo d. EPI. Answer: d. EPI
● A patient comes in with a 1 cm brain aneurysm clip and you find the package which lists
what metal it is made from. Which of the following metals would make it unsafe to scan this
patient? a. Elgiloy b. Phynox c. MP35N d. 405 Stainless steel. Answer: d. 405 Stainless steel
, Phynox, elgiloy, titanium, and 316 stainless steel are non-ferrous. 17-7PH and 405 stainless
steel are ferrous
● Which of the following are true of Lenz's force? a. Occurs because of the interaction
between a ferrous object and the static magnetic field b. Influences objects that are electrically
conductive c. Influence on an object depends on the field strength d. Increases with the rate of
motion through the static magnetic field.. Answer: b, c, d Lenz's law is caused when an
electrically conductive object (not ferrous) interacts with a strong magnetic field. The speed
that the object translates through the magnetic field as well as its dimensions, orientation, and
the overall magnetic field will influence the amount of Lenz's force on an object. This force
acts as a repulsive force when translating through the static magnetic field.
● A patient is having an MR lumbar spine in normal mode. We know that the SAR will not
exceed which of the following? a. 4 W/kg b. 3 W/kg c. 2 W/kg d. 1 W/kg. Answer: c. 2 W/kg
● An MR conditional implant should minimally address which of the following? Select all that
apply. a. Switched gradient magnetic fields b. Patient position c. Radiofrequency fields d.
Static magnetic field. Answer: a, c, d
● Where would we expect to see hotspots? a. Areas in the near field b. Areas with low
dielectric constants c. Areas under the transmit RF coil d. All the choices are correct. Answer:
d. All the choices are correct
● There is a large number of literature that suggests that patients in sickle cell crisis who
receive gad contrast can develop many complications, even death. a. True b. False. Answer:
b. False
● Which of the following slew rates would produce the greatest chance for peripheral nerve
stimulation? a. 180 T/m/s b. 200 T/m/s c. 100 T/m/s d. 125 T/m/s. Answer: b. 200 T/m/s
● The ICNIRP sets and occupational dose of _______ to the head and torso. a. Spatial peak
magnetic flux density of 6T b. Spatial peak magnetic flux density of 4T c. Spatial peak
magnetic flux density of 2T d. Spatial peak magnetic flux density of 1T. Answer: c. Spatial
peak magnetic flux density of 2T
● A patient is having MR pelvis exam. Where would we expect the patient to experience
peripheral nerve stimulation? a. Head b. Legs c. Groin d. Feet. Answer: b. Legs
● The amount of patient heating depends on which of the following? a. Surface area b.
Receiver coil c. Patient mass d. Controlled operation. Answer: a, b, c, d
WITH CORRECT ANSWERS GRADED A+
● Peripheral nerve stimulation can be described by which of the following? a. Faraday's law
of induction b. Ohm's law c. Lenz's law d. Planks Law. Answer: b. Faraday's law of induction
(describes the induction of electrical current in the presence of a changing magnetic field).
Lenz's force describes the opposing forces created. Ohm's law deals with the resistance of
current along a wire.
● Gad contrast has been found in the body in what form? Select all that apply. a.
Water-soluble b. Non-water soluble. Answer: a, b
● Which of the following would we expect to be the loudest sequence? a. GRASS b. Fast spin
echo c. Conventional gradient sequence d. FLAIR. Answer: a. GRASS The FLAIR and fast
spin echo are considered spin echo sequences; they do not have extremely fast changing
gradient, so will not produce as much noise.
● Which of the following has a steeper spatial magnetic gradient? a. Vertical B0 b. Horizontal
B0. Answer: a. Vertical B0
● The strongest gradient strength will reach maximum strength how far from isocenter? a.
5-20 cm b. 20-40 cm c. 30-60 cm d. 5-15 cm. Answer: c. 30-60 cm
● Which of the following is true of gad and breastfeeding mothers? Select all that apply. a.
Gad is found in breast milk in a stable and chelated form b. It is thought that gad contrast may
alter the taste of breastmilk. c. Available data suggests that breastmilk should be pumped and
discarded for 24 hours after the IV dose d. 20% of the intravascular dose would be excreted
into the breastmilk within the first 24 hours.. Answer: a, b
● Which of the following will influence peripheral nerve stimulation? a. Static magnetic field b.
Magnetic field at isocenter c. Patient weight d. Slew rate. Answer: d. Slew rate
● Which of the following pulse sequences would we expect to see the least patient heating?
a. Incoherent gradient b. STIR c. Fast spin echo d. EPI. Answer: d. EPI
● A patient comes in with a 1 cm brain aneurysm clip and you find the package which lists
what metal it is made from. Which of the following metals would make it unsafe to scan this
patient? a. Elgiloy b. Phynox c. MP35N d. 405 Stainless steel. Answer: d. 405 Stainless steel
, Phynox, elgiloy, titanium, and 316 stainless steel are non-ferrous. 17-7PH and 405 stainless
steel are ferrous
● Which of the following are true of Lenz's force? a. Occurs because of the interaction
between a ferrous object and the static magnetic field b. Influences objects that are electrically
conductive c. Influence on an object depends on the field strength d. Increases with the rate of
motion through the static magnetic field.. Answer: b, c, d Lenz's law is caused when an
electrically conductive object (not ferrous) interacts with a strong magnetic field. The speed
that the object translates through the magnetic field as well as its dimensions, orientation, and
the overall magnetic field will influence the amount of Lenz's force on an object. This force
acts as a repulsive force when translating through the static magnetic field.
● A patient is having an MR lumbar spine in normal mode. We know that the SAR will not
exceed which of the following? a. 4 W/kg b. 3 W/kg c. 2 W/kg d. 1 W/kg. Answer: c. 2 W/kg
● An MR conditional implant should minimally address which of the following? Select all that
apply. a. Switched gradient magnetic fields b. Patient position c. Radiofrequency fields d.
Static magnetic field. Answer: a, c, d
● Where would we expect to see hotspots? a. Areas in the near field b. Areas with low
dielectric constants c. Areas under the transmit RF coil d. All the choices are correct. Answer:
d. All the choices are correct
● There is a large number of literature that suggests that patients in sickle cell crisis who
receive gad contrast can develop many complications, even death. a. True b. False. Answer:
b. False
● Which of the following slew rates would produce the greatest chance for peripheral nerve
stimulation? a. 180 T/m/s b. 200 T/m/s c. 100 T/m/s d. 125 T/m/s. Answer: b. 200 T/m/s
● The ICNIRP sets and occupational dose of _______ to the head and torso. a. Spatial peak
magnetic flux density of 6T b. Spatial peak magnetic flux density of 4T c. Spatial peak
magnetic flux density of 2T d. Spatial peak magnetic flux density of 1T. Answer: c. Spatial
peak magnetic flux density of 2T
● A patient is having MR pelvis exam. Where would we expect the patient to experience
peripheral nerve stimulation? a. Head b. Legs c. Groin d. Feet. Answer: b. Legs
● The amount of patient heating depends on which of the following? a. Surface area b.
Receiver coil c. Patient mass d. Controlled operation. Answer: a, b, c, d
