MRI Registry Test 1 Questions and
Answers Latest Version Already Passed
What is the primary purpose of the RF coils in MRI?
A. To generate the main magnetic field
B. ✔✔ To transmit and receive radiofrequency signals
C. To improve patient comfort
D. To control the gradient system
Which parameter primarily affects the signal-to-noise ratio (SNR) in MRI?
A. ✔✔ Magnetic field strength and coil selection
B. The patient’s breathing rate
C. The temperature of the MRI suite
D. The number of gradient pulses
What does TE (Echo Time) represent in an MRI sequence?
A. The time between patient positioning and scan start
B. The time taken for the scanner to produce an image
C. ✔✔ The time between the RF pulse and the peak of the echo signal
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,D. The duration of the entire scan
Why is T1-weighted imaging useful in MRI?
A. ✔✔ It provides excellent anatomical detail
B. It enhances fluid-filled structures
C. It minimizes scan artifacts
D. It reduces the need for contrast agents
What is the primary function of gradient coils in an MRI scanner?
A. To generate the main magnetic field
B. ✔✔ To spatially encode MRI signals
C. To improve field homogeneity
D. To enhance signal intensity
Which MRI parameter controls image contrast?
A. ✔✔ TR, TE, and flip angle
B. The size of the magnet
C. The patient’s position
2
, D. The use of a quadrature coil
What is the main reason for using fat suppression in MRI?
A. ✔✔ To reduce fat signal and improve visualization of soft tissues
B. To shorten scan time
C. To enhance the signal-to-noise ratio
D. To remove artifacts from metal implants
Why is a short TR (Repetition Time) used in T1-weighted imaging?
A. ✔✔ To enhance contrast between tissues with different relaxation times
B. To increase scan speed
C. To improve spatial resolution
D. To suppress fluid signals
What effect does increasing the number of signal averages (NEX) have on MRI images?
A. ✔✔ It reduces noise and improves image quality
B. It shortens scan time
C. It increases motion artifacts
3
Answers Latest Version Already Passed
What is the primary purpose of the RF coils in MRI?
A. To generate the main magnetic field
B. ✔✔ To transmit and receive radiofrequency signals
C. To improve patient comfort
D. To control the gradient system
Which parameter primarily affects the signal-to-noise ratio (SNR) in MRI?
A. ✔✔ Magnetic field strength and coil selection
B. The patient’s breathing rate
C. The temperature of the MRI suite
D. The number of gradient pulses
What does TE (Echo Time) represent in an MRI sequence?
A. The time between patient positioning and scan start
B. The time taken for the scanner to produce an image
C. ✔✔ The time between the RF pulse and the peak of the echo signal
1
,D. The duration of the entire scan
Why is T1-weighted imaging useful in MRI?
A. ✔✔ It provides excellent anatomical detail
B. It enhances fluid-filled structures
C. It minimizes scan artifacts
D. It reduces the need for contrast agents
What is the primary function of gradient coils in an MRI scanner?
A. To generate the main magnetic field
B. ✔✔ To spatially encode MRI signals
C. To improve field homogeneity
D. To enhance signal intensity
Which MRI parameter controls image contrast?
A. ✔✔ TR, TE, and flip angle
B. The size of the magnet
C. The patient’s position
2
, D. The use of a quadrature coil
What is the main reason for using fat suppression in MRI?
A. ✔✔ To reduce fat signal and improve visualization of soft tissues
B. To shorten scan time
C. To enhance the signal-to-noise ratio
D. To remove artifacts from metal implants
Why is a short TR (Repetition Time) used in T1-weighted imaging?
A. ✔✔ To enhance contrast between tissues with different relaxation times
B. To increase scan speed
C. To improve spatial resolution
D. To suppress fluid signals
What effect does increasing the number of signal averages (NEX) have on MRI images?
A. ✔✔ It reduces noise and improves image quality
B. It shortens scan time
C. It increases motion artifacts
3
