ARMRIT Practice test
Study online at https://quizlet.com/_r1aie
1. Magnetism can be defined as the ability of certain substances to attract:: Iron,
Cobalt, Nickel
2. The components of the Gyro-magnetic ratio are:: Magnetic moment to angular momentum
3. Which type of electromagnetic coils produce smaller magnetic field which
allow spatial localization to be performed?: Gradient coils
4. Which type of MRI magnet requires cryogen to cool magnetic coils to 4
degrees Kelvin?: Superconductive
5. T2 is the measurement of time for the transverse component of the net
magnetization vector to decrease what percentage of its maximum value after
the application of a 90 degree radio frequency pulse:: 37%
6. Which cryogenic material can produce temperature as low as 4 degrees
Kelvin?: Liquid Helium
7. The T1 process is also known as: Spin-Lattice
8. a 90 degree radio-frequency pulse will alter the net magnetization vector.
Another effect is:: The hydrogen protons will have phase coherence.
9. Which type of MRI magnet requires no electricity to maintain its magnetic
field and can weigh from 18,000 lb. to 200,000 lb.?: Permanent
10. To describe the uniformity of the MRI system's main magnetic field, the term
employed is: Homogeneity
11. The purpose of magnetic resonance angiography is to image the: Blood Flow
12. Magnetic Resonance Imaging is derived from the process known as:: Nuclear
Magnetic resonance
13. The introduction of gadolinium based contrast enhancement agents by
Intra-venous injection can involve passing through an abnormal blood brain
barrier. The tissue compartments involved are the:: Intravascular to interstitial
14. In a pulse sequence, transmitting an initial 90 degree radio-frequency pulse
will cause the net magnetization vector to:: Shift in both size and direction.
15. Which statement is true of the relaxation process?: Without the effects of T2 star, T2 decay
continues.
16. Which molecule precesses closer to the Larmor frequency?: Fat
17. 1 milliliter of H2O contains how many hydrogen protons: 6 times 10 ^22
1/2
Study online at https://quizlet.com/_r1aie
1. Magnetism can be defined as the ability of certain substances to attract:: Iron,
Cobalt, Nickel
2. The components of the Gyro-magnetic ratio are:: Magnetic moment to angular momentum
3. Which type of electromagnetic coils produce smaller magnetic field which
allow spatial localization to be performed?: Gradient coils
4. Which type of MRI magnet requires cryogen to cool magnetic coils to 4
degrees Kelvin?: Superconductive
5. T2 is the measurement of time for the transverse component of the net
magnetization vector to decrease what percentage of its maximum value after
the application of a 90 degree radio frequency pulse:: 37%
6. Which cryogenic material can produce temperature as low as 4 degrees
Kelvin?: Liquid Helium
7. The T1 process is also known as: Spin-Lattice
8. a 90 degree radio-frequency pulse will alter the net magnetization vector.
Another effect is:: The hydrogen protons will have phase coherence.
9. Which type of MRI magnet requires no electricity to maintain its magnetic
field and can weigh from 18,000 lb. to 200,000 lb.?: Permanent
10. To describe the uniformity of the MRI system's main magnetic field, the term
employed is: Homogeneity
11. The purpose of magnetic resonance angiography is to image the: Blood Flow
12. Magnetic Resonance Imaging is derived from the process known as:: Nuclear
Magnetic resonance
13. The introduction of gadolinium based contrast enhancement agents by
Intra-venous injection can involve passing through an abnormal blood brain
barrier. The tissue compartments involved are the:: Intravascular to interstitial
14. In a pulse sequence, transmitting an initial 90 degree radio-frequency pulse
will cause the net magnetization vector to:: Shift in both size and direction.
15. Which statement is true of the relaxation process?: Without the effects of T2 star, T2 decay
continues.
16. Which molecule precesses closer to the Larmor frequency?: Fat
17. 1 milliliter of H2O contains how many hydrogen protons: 6 times 10 ^22
1/2
