As the number of phase encoded echoes acquired increases:
A. ) the image resolution increases.
B. ) the image resolution decreases.
C. ) the image resolution is unaffected.
查看答案
The phase encoding gradient is applied:
A. ) Before the read gradient.
B. ) After the read gradient.
C. ) At the same time as the read gradient.
If a frequency encoding gradient is applied along the Y-axis, then the echo signal will be a projection against the:
A. ) X-axis.
B. ) Y-axis.
C. ) Z-axis.
A longer pulse length will excite a:
A. ) narrower range of frequencies.
B. ) broader range of frequencies.
C. ) range of frequencies equal to the pulse time.
The width of the envelope of frequencies excited by an RF pulse is called the:
A. ) Excitation bandwidth.
B. ) Receiver bandwidth.
C. ) Truncated RF wave.
微信支付 
支付宝支付