MRI Registry Test #1 Questions With
Complete Solutions
/. Which of the following implants may pose a problem during scanning?
a.implantable drug infusion pumps
b. cardiac pacemakers/breast tissue expanders
c. bone growth stimulators
d. all of the above - Answer-D
/.Which of the following could result from scanning a pt with a cardiac pacemaker?
a. changes of programming
b. induced current in the lead wire/pt burns
c. pacemaker may become dislodged and pulled from pt's chest - Answer-A and B
/.Which of the following procedures would be acceptable in checking for ferrous
qualities of accessory devices?
a. Check the weight
b. hand-held magnet
c. manufacturer label
d. take device into room - Answer-B
/.A ___ reaction to contrast involves respiratory, cardiovascular, cutaneous, and
possibly gastrointestinal manifestations? - Answer-Anaphylactoid
/.Which of the following factors are responsible for inducing a physiologic response to
induced voltage?
a. orientation of gradient field
b. pt's size
c. frequency of stimulus
d. all of the above - Answer-D
/.___ are reported visual sensations, or flashes of light, that result from direct excitation
of optic nerve, induced by the gradient magnetic fields. - Answer-Magnetophosphenes
/.At the present time, what is the FDA recommended safe SAR level to the head? -
Answer-3W/kg
/.Compared with conventional SE sequences, the fast pulse sequences, such as FSE or
TSE have ___ RF deposition. - Answer-Increased
, /.Anesthesiologists consider the use of ___ to be a standard practice for monitoring
when scanning sedated or anesthetized pts. - Answer-Pulse Ox
/.After contrast injection, paramagnetic contrast agents affect pt tissue in which of the
following ways? - Answer-Decrease T1 and T2 relaxation times
/.Which of the following contrast agents is an ionic compound?
a. Mag
b. Prohance
c. Omniscan
d. None of the above - Answer-D
/.Following the injection of contrast, which of the following pts are most likely to have
serious reaction?
a. asthma/allergic respiratory disorders
b. High BUN levels
c. Anemic pts.
d. Claustrophobics - Answer-A
/.Which position best demonstrates the collateral ligaments of the knee? - Answer-COR
/.What is the major advantage of using a surface coil? - Answer-Increased SNR
/.The closer a receiver coil is to the pt, the less RF energy is needed to create trans
mag. - what is the result of this phenomenon? - Answer-Reduced SAR to pt
/.Which of the following coils is not transmit/receive?
a. head
b. body
c. TMJ
d. Extremity - Answer-C
/.Which coil provides the highest SNR when scanning a TMJ? - Answer-3" circular coil
/.Which coils yields the high SNR of a sensitive, small surface coil, yet covers a large
area? - Answer-Phased Array
/.____ contrast enhancement occurs when the tissue of interest appears darker on
images following the administration of contrast. - Answer-Negative
/.If a tech wanted a higher res on a hip scan, which of the following would they select? -
Answer-256x256
/.____ is an algorithm which creates a 2D projective image from a 3D dataset, using the
value of the brightest pixel. - Answer-MIP
Complete Solutions
/. Which of the following implants may pose a problem during scanning?
a.implantable drug infusion pumps
b. cardiac pacemakers/breast tissue expanders
c. bone growth stimulators
d. all of the above - Answer-D
/.Which of the following could result from scanning a pt with a cardiac pacemaker?
a. changes of programming
b. induced current in the lead wire/pt burns
c. pacemaker may become dislodged and pulled from pt's chest - Answer-A and B
/.Which of the following procedures would be acceptable in checking for ferrous
qualities of accessory devices?
a. Check the weight
b. hand-held magnet
c. manufacturer label
d. take device into room - Answer-B
/.A ___ reaction to contrast involves respiratory, cardiovascular, cutaneous, and
possibly gastrointestinal manifestations? - Answer-Anaphylactoid
/.Which of the following factors are responsible for inducing a physiologic response to
induced voltage?
a. orientation of gradient field
b. pt's size
c. frequency of stimulus
d. all of the above - Answer-D
/.___ are reported visual sensations, or flashes of light, that result from direct excitation
of optic nerve, induced by the gradient magnetic fields. - Answer-Magnetophosphenes
/.At the present time, what is the FDA recommended safe SAR level to the head? -
Answer-3W/kg
/.Compared with conventional SE sequences, the fast pulse sequences, such as FSE or
TSE have ___ RF deposition. - Answer-Increased
, /.Anesthesiologists consider the use of ___ to be a standard practice for monitoring
when scanning sedated or anesthetized pts. - Answer-Pulse Ox
/.After contrast injection, paramagnetic contrast agents affect pt tissue in which of the
following ways? - Answer-Decrease T1 and T2 relaxation times
/.Which of the following contrast agents is an ionic compound?
a. Mag
b. Prohance
c. Omniscan
d. None of the above - Answer-D
/.Following the injection of contrast, which of the following pts are most likely to have
serious reaction?
a. asthma/allergic respiratory disorders
b. High BUN levels
c. Anemic pts.
d. Claustrophobics - Answer-A
/.Which position best demonstrates the collateral ligaments of the knee? - Answer-COR
/.What is the major advantage of using a surface coil? - Answer-Increased SNR
/.The closer a receiver coil is to the pt, the less RF energy is needed to create trans
mag. - what is the result of this phenomenon? - Answer-Reduced SAR to pt
/.Which of the following coils is not transmit/receive?
a. head
b. body
c. TMJ
d. Extremity - Answer-C
/.Which coil provides the highest SNR when scanning a TMJ? - Answer-3" circular coil
/.Which coils yields the high SNR of a sensitive, small surface coil, yet covers a large
area? - Answer-Phased Array
/.____ contrast enhancement occurs when the tissue of interest appears darker on
images following the administration of contrast. - Answer-Negative
/.If a tech wanted a higher res on a hip scan, which of the following would they select? -
Answer-256x256
/.____ is an algorithm which creates a 2D projective image from a 3D dataset, using the
value of the brightest pixel. - Answer-MIP
