ARRT PRINCIPLES OF MRI FINAL EXAM REVIEW
COMPLETE ANSWERS 100% CORRECT (LATEST )
1. How can we correct for a Gibb's artifact?: Increase number of phase encodings or
decrease FOV
2. Fat and water precess at different frequencies, causing a arti-fact.: chemical shift
3. What can be done to the receiver bandwidth to compensate for chemicalshift?: Increase
receiver bandwidth
4. Artifacts from motion will appear in which direction?: Phase encoding direction
5. Energy given to nuclei in adjacent slices due to spin lattice relaxation can cause adjacent
slices in an acquisition to have different image contrast. What type of artifact is this?: Cross
Talk
6. An artifact seen in a GRADIENT ECHO image that appears as black and white banding
on the edges of the FOV: Moire
7. Diseases, such as Malaria, in which microorganisms are transferred via aninsect are
classified as: vector borne
8. A complication or illness caused by the treatment from a healthcare professional is
termed: latrogenic
9. In a medical malpractice lawsuit, the must be able to prove medical
malpractice: plaintiff / patient
10. During transport of the patient, the urinary collection bag should beplaced: below the
bladder
11. The stray magnetic field outside the bore of the magnet is termed: fringefield
12. FDA revision in 2003 on RF absorption limits the absorption to forthe head: 3 w/kg -
10 min
13. Which of the following has been documented to cause muscle contractions, alterations in
vision and biochemistry of cells?: time varying magneticfields
14. What is the RF absorption limit for the whole body based off the 2003 FDArevision?: 4
w/kg - 15 min
15. When a sudden loss in temperature occurs which causes the coils to nolonger be
superconducting, resulting in helium escaping from the cryogenicbath is termed:: a quench
16. Force of an object in a magnetic environment depends on the following:: -
mass of the object, strength of the magnet, ferromagnetic properties of the object
, 17. The medial and lateral rectus muscles are located where?: The eye
18. The first major branch of the abdominal aorta is the:: celiac trunk
19. The largest ventricle in the heart: left ventricle
20. In what plane would a tear of the collateral ligaments of the knee be bestevaluated?:
coronal
21. The valve lies between the left atrium and left ventricle: bicuspid /mitral
22. Which fissure divides the frontal lobe from the temporal lobes?: Sylvian
23. The common carotid bifurcates into the internal and external carotid arteryat the level of
: C3 / C4
24. What three branches come off the aorta?: brachiocephalic, left subclavian,left carotid
25. Which veins transport oxygenated blood?: pulmonary
26. Which valve lies between the right atrium and right ventricle?: tricuspid
27. Water has a T1 relaxation time and a T2 relaxation
time: -
long / long
28. The transmit bandwidth of the RF pulse effects:: spatial resolution, SNR,slice thickness
29. The process the digitizes the MR signal is known as:: Fourier / Fast Fourier
30. Reducing the TE results in images with what change in contrast?: de-creased T2
information
31. The phase encoding step is performed prior to the step:
frequen-cy encoding
32. What element in the body is the principle nucleus used in MR?: hydrogen
33. In a super conducting magnet, the magnetic field strength is increased byincreasing the: #
of turns in the wires
34. Which parameter adjustments would shorten scan time?: Decrease TRIncrease echo train
length
Decrease NEX
35. Reducing the FOV will result in: decreased SNR
36. How can thin slices be selected?: Steep slice gradientnarrow bandwidth
37. All the following result in increased SNR: Parameter adjustments that in-crease SNR are:
Increase TR
COMPLETE ANSWERS 100% CORRECT (LATEST )
1. How can we correct for a Gibb's artifact?: Increase number of phase encodings or
decrease FOV
2. Fat and water precess at different frequencies, causing a arti-fact.: chemical shift
3. What can be done to the receiver bandwidth to compensate for chemicalshift?: Increase
receiver bandwidth
4. Artifacts from motion will appear in which direction?: Phase encoding direction
5. Energy given to nuclei in adjacent slices due to spin lattice relaxation can cause adjacent
slices in an acquisition to have different image contrast. What type of artifact is this?: Cross
Talk
6. An artifact seen in a GRADIENT ECHO image that appears as black and white banding
on the edges of the FOV: Moire
7. Diseases, such as Malaria, in which microorganisms are transferred via aninsect are
classified as: vector borne
8. A complication or illness caused by the treatment from a healthcare professional is
termed: latrogenic
9. In a medical malpractice lawsuit, the must be able to prove medical
malpractice: plaintiff / patient
10. During transport of the patient, the urinary collection bag should beplaced: below the
bladder
11. The stray magnetic field outside the bore of the magnet is termed: fringefield
12. FDA revision in 2003 on RF absorption limits the absorption to forthe head: 3 w/kg -
10 min
13. Which of the following has been documented to cause muscle contractions, alterations in
vision and biochemistry of cells?: time varying magneticfields
14. What is the RF absorption limit for the whole body based off the 2003 FDArevision?: 4
w/kg - 15 min
15. When a sudden loss in temperature occurs which causes the coils to nolonger be
superconducting, resulting in helium escaping from the cryogenicbath is termed:: a quench
16. Force of an object in a magnetic environment depends on the following:: -
mass of the object, strength of the magnet, ferromagnetic properties of the object
, 17. The medial and lateral rectus muscles are located where?: The eye
18. The first major branch of the abdominal aorta is the:: celiac trunk
19. The largest ventricle in the heart: left ventricle
20. In what plane would a tear of the collateral ligaments of the knee be bestevaluated?:
coronal
21. The valve lies between the left atrium and left ventricle: bicuspid /mitral
22. Which fissure divides the frontal lobe from the temporal lobes?: Sylvian
23. The common carotid bifurcates into the internal and external carotid arteryat the level of
: C3 / C4
24. What three branches come off the aorta?: brachiocephalic, left subclavian,left carotid
25. Which veins transport oxygenated blood?: pulmonary
26. Which valve lies between the right atrium and right ventricle?: tricuspid
27. Water has a T1 relaxation time and a T2 relaxation
time: -
long / long
28. The transmit bandwidth of the RF pulse effects:: spatial resolution, SNR,slice thickness
29. The process the digitizes the MR signal is known as:: Fourier / Fast Fourier
30. Reducing the TE results in images with what change in contrast?: de-creased T2
information
31. The phase encoding step is performed prior to the step:
frequen-cy encoding
32. What element in the body is the principle nucleus used in MR?: hydrogen
33. In a super conducting magnet, the magnetic field strength is increased byincreasing the: #
of turns in the wires
34. Which parameter adjustments would shorten scan time?: Decrease TRIncrease echo train
length
Decrease NEX
35. Reducing the FOV will result in: decreased SNR
36. How can thin slices be selected?: Steep slice gradientnarrow bandwidth
37. All the following result in increased SNR: Parameter adjustments that in-crease SNR are:
Increase TR
