# Mock 1.2

15 Questions | Total Attempts: 22

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• 1.
The timing diagram is a graphic depiction of the __________ between pulses.
• A.

Height and width

• B.

Size and shape

• C.

Time and date

• D.

Order and timing

• 2.
The time between 90° RF pulses is known as the __________.
• A.

Repettion time (TR)

• B.

Echo time (TE)

• C.

Inversion time (TI)

• D.

Flip angle (φ)

• 3.
The top line of the diagram (Slide 5) represents the timing of the __________.
• A.

• B.

• C.

• D.

RF pulses

• 4.
The second line of the timing diagram represents the timing of the __________.
• A.

• B.

• C.

• D.

RF pulses

• 5.
The third line of the timing diagram represents the __________.
• A.

• B.

• C.

• D.

RF pulses

• 6.
The fourth line of the timing diagram represents the __________.
• A.

• B.

• C.

• D.

RF pulses

• 7.
TR is generally chosen by the amount of __________ desired on the MR image.
• A.

T1 contrast

• B.

T2 contrast

• C.

T2* contrast

• D.

PD contrast

• 8.
As TR increases, __________.
• A.

Scan time decreases

• B.

Scan time increases

• C.

Scan time stays the same

• D.

Scan time is not affected by TR

• 9.
As TR increases, __________.
• A.

SNR decreases

• B.

SNR increases

• C.

SNR stays the same

• D.

SNR is not affected by TR

• 10.
As TR increases, __________.
• A.

# slices decreases

• B.

# slices increases

• C.

# slices stays the same

• D.

# slices is not affected by TR

• 11.
The time between the 90° pulse and formation of the echo is known as the __________.
• A.

Repetition time (TR)

• B.

Echo time (TE)

• C.

Inversion time (TI)

• D.

Flip angle (φ)

• 12.
The loss of signal noted from the FID to the echo is the result of T2 decay and __________.
• A.

T1 recovery

• B.

Inhomogenieties

• C.

Chemical shift

• D.

B & c

• 13.
As TE increases, __________.
• A.

Scan time decreases

• B.

Scan time increases

• C.

Scan time stays the same

• D.

TR increases

• 14.
As TE increases, __________.
• A.

SNR decreases

• B.

SNR increases

• C.

SNR stays the same

• D.

Noise increases

• 15.
As TE increases, __________.
• A.

# slices decreases

• B.

# slices increases

• C.

# slices stays the same

• D.

# slices is not affected by TR