ARRT MRI - Principles of Magnetic Resonance Actual Exam Questions
With Reviewed 100% Correct Detailed Answers Guaranteed Pass!!
1. one of the factors that affects the MRI fringe field the amount of shielding inside
the MRI scanner
2. What type of force can negatively affect ferro- Rotational force
magnetic aneurysm clips or noncompatible car-
diac pacemakers during an MRI examination?
3. The International Society for Magnetic Resonance True
in Medicine (ISMRM) determined that pregnant
employees CAN safely enter the scan room and
CANNOT even stay inside the scan room while the
scanner is running.
4. Gadolinium contrast is at present best avoided True
for pregnant MRI patients because it crosses the
placenta and enters the amniotic fluid
5. A 0.8 T (Tesla) MRI machine is said to have how 8,000
many gauss
6. Why is it crucial to enter the patient's weight be- To ensure the specific absorption
fore starting an MRI examination rate (SAR) does not exceed the
permitted levels
7. The magneto-hemodynamic effect can be ob- True
served during an MRI exam by an increase in the
amplitude of the T wave on the ECG
8. What is active shielding in MRI Tightly wound electromagnetic
coils inside the MRI scanner
9. 4.0 T
,ARRT MRI - Principles of Magnetic Resonance Actual Exam Questions
With Reviewed 100% Correct Detailed Answers Guaranteed Pass!!
ccording to FDA guidelines, what is the maximum
static field strength a 2 weeks old infant can be
exposed to
10. examples of diamagnetic substances and/or ma- paper, plastic, sheets
terials
11. what is the recommended delay period for the 4-6 weeks
MRI exam if the patient has had a surgical clip
inserted
12. characteristics of paramagnetic materials and/or They demonstrate a small pos-
substances itive magnetic susceptibility of
less than one when exposed to a
magnetic field
13. What is the FDA temperature increase limit for the 38 degrees Celsius
specific absorption rate (SAR) for the head of the
patient
14. Resistive magnets depend on electrical currents TRUE
to generate their magnetic field and typically
have field strengths of 0.6T.
15. Magnetic moments that are in the same place on IN PHASE
the precessional path around B0 (B Zero) at any
given time are called
16. What is the time from the application of the RF ECHO TIME (TE)
pulse to the peak of the signal induced in the coil
17. the time it takes 63% of the longitudinal magne- T1 RECOVERY
tization to recover in the tissue
, ARRT MRI - Principles of Magnetic Resonance Actual Exam Questions
With Reviewed 100% Correct Detailed Answers Guaranteed Pass!!
18. Which physics law describes this principle - any FARRADAYS LAW
receiver coil placed in a moving magnetic field
receives voltage
19. The gyro-magnetic ratio of Hydrogen (H) is: 42.57 MHZ
20. At what rate does a 1H (Hydrogen) atom precess 127.8
when it is subjected to a magnetic field of 3.0T
(Tesla)
21. A vector has Magnitude and direction
22. Low-energy nuclei align their magnetic moments FALSE
parallel to the external field and are termed
"spin-down" nuclei
23. When subjected to an external magnetic field, Align parallel or antiparallel to
hydrogen nuclei the magnetic field
24. At equilibrium, there are sightly more hydrogen Lower energy state; higher ener-
atoms in the than in the gy state
25. The amplitude and duration of the RF pulse deter- FLIP ANGLE
mines
26. T2 Decay is termed spin-spin relaxation and it is TRUE
the time it takes 63% of the transverse magneti-
zation to be lost
27. MR active nuclei are isotope atoms that have TRUE
slightly more or fewer neutrons than protons and
have an angular moment
28. FALSE
With Reviewed 100% Correct Detailed Answers Guaranteed Pass!!
1. one of the factors that affects the MRI fringe field the amount of shielding inside
the MRI scanner
2. What type of force can negatively affect ferro- Rotational force
magnetic aneurysm clips or noncompatible car-
diac pacemakers during an MRI examination?
3. The International Society for Magnetic Resonance True
in Medicine (ISMRM) determined that pregnant
employees CAN safely enter the scan room and
CANNOT even stay inside the scan room while the
scanner is running.
4. Gadolinium contrast is at present best avoided True
for pregnant MRI patients because it crosses the
placenta and enters the amniotic fluid
5. A 0.8 T (Tesla) MRI machine is said to have how 8,000
many gauss
6. Why is it crucial to enter the patient's weight be- To ensure the specific absorption
fore starting an MRI examination rate (SAR) does not exceed the
permitted levels
7. The magneto-hemodynamic effect can be ob- True
served during an MRI exam by an increase in the
amplitude of the T wave on the ECG
8. What is active shielding in MRI Tightly wound electromagnetic
coils inside the MRI scanner
9. 4.0 T
,ARRT MRI - Principles of Magnetic Resonance Actual Exam Questions
With Reviewed 100% Correct Detailed Answers Guaranteed Pass!!
ccording to FDA guidelines, what is the maximum
static field strength a 2 weeks old infant can be
exposed to
10. examples of diamagnetic substances and/or ma- paper, plastic, sheets
terials
11. what is the recommended delay period for the 4-6 weeks
MRI exam if the patient has had a surgical clip
inserted
12. characteristics of paramagnetic materials and/or They demonstrate a small pos-
substances itive magnetic susceptibility of
less than one when exposed to a
magnetic field
13. What is the FDA temperature increase limit for the 38 degrees Celsius
specific absorption rate (SAR) for the head of the
patient
14. Resistive magnets depend on electrical currents TRUE
to generate their magnetic field and typically
have field strengths of 0.6T.
15. Magnetic moments that are in the same place on IN PHASE
the precessional path around B0 (B Zero) at any
given time are called
16. What is the time from the application of the RF ECHO TIME (TE)
pulse to the peak of the signal induced in the coil
17. the time it takes 63% of the longitudinal magne- T1 RECOVERY
tization to recover in the tissue
, ARRT MRI - Principles of Magnetic Resonance Actual Exam Questions
With Reviewed 100% Correct Detailed Answers Guaranteed Pass!!
18. Which physics law describes this principle - any FARRADAYS LAW
receiver coil placed in a moving magnetic field
receives voltage
19. The gyro-magnetic ratio of Hydrogen (H) is: 42.57 MHZ
20. At what rate does a 1H (Hydrogen) atom precess 127.8
when it is subjected to a magnetic field of 3.0T
(Tesla)
21. A vector has Magnitude and direction
22. Low-energy nuclei align their magnetic moments FALSE
parallel to the external field and are termed
"spin-down" nuclei
23. When subjected to an external magnetic field, Align parallel or antiparallel to
hydrogen nuclei the magnetic field
24. At equilibrium, there are sightly more hydrogen Lower energy state; higher ener-
atoms in the than in the gy state
25. The amplitude and duration of the RF pulse deter- FLIP ANGLE
mines
26. T2 Decay is termed spin-spin relaxation and it is TRUE
the time it takes 63% of the transverse magneti-
zation to be lost
27. MR active nuclei are isotope atoms that have TRUE
slightly more or fewer neutrons than protons and
have an angular moment
28. FALSE
