What is the effect of dielectric/ B1 inhomogeneity in MRI?

To double SNR, NEX/NSA must increase by a factor of 2.

Noise is the voltage induced in the receiver coil by the precession of the net magnetic vector (NMV) in the transverse plane.

Doubling this parameter will double the amount of data stored in each line of k-space:

Ghosting artifacts can be caused by moving anatomy in the frequency encoding direction.

The current Dixon-type sequences produce four sets of images, water only, fat only, in-phase, and out-of-phase, due to acquiring echos with different TRs and the same TEs.

To saturate fat, water or silicone signal, a 90° pre-saturation RF pulse is applied at the precessional frequency of the nuclei to the whole FOV.

A patient being in contact with the coil can lead to shading artifacts.

Intra-voxel dephasing refers to phase differences in flowing and stationary nuclei within the same voxel.

What happens to SNR when the receive bandwidth (RBW) is decreased?