Rafael Rojas1, Sergio Enrique Solis1, Oscar Rene Marrufo1, Alfredo Odon Rodriguez1
1CI3M, UAM Iztapalapa, Mexico, City, Mexico
The signal-to-noise ratio is an accepted standard for measurement of quality in MRI. However, it is very difficult to derive analytical expressions from the Maxwell equations due to the complicated mathematical frame involved in it. The numerical study of the electromagnetic behavior for MRI coils and biological tissues is a good alternative. A numerical method based on Finite Element Method (FEM) to compute the SNR in a circular-shaped coil is presented here, and that was compared with the SNR calculated by a Varian algorithm from a real rat brain phantom image obtained with a 7T MRI system in our laboratory.