Question

6. Using MRI, you are imaging a plane of a 10 cm cube at z = 5 cm, using a slice thickness ΔΖ = 1 cm. Your system has the slice select gradient G,-1 G / mm and the cube has γ = 4.258 kHz / G. Find the bandwidth (in Hz) of the RF waveform you would be using to perform the slice selection

Answer 1

The bandwidth of the RF waveform used for slice selection is given by

...........................(1)

The bandwidth of the RF waveform used for slice selection is given by Delta F = gamma *G_z * Delta z . . . . . . . . . (1) where gamma = 4.258 kHz/G Delta z = 1 cm G_z = 1 G/mm Hence Delta F = 4.258 *10^3*0.1*1 = 425.8 Hz This is the required bandwidth in Hz.

where $\gamma =4.258 kHz/G$

$\Delta z=1 cm$

Hence $\Delta F=4.258*10^{3}*0.1*1=425.8 Hz$

This is the required bandwidth in Hz.