MR imaging: output format

The output of each MR imaging simulation is a .mat file that consists of the following:

• Mx_per_timestep: an array that holds the evolution of the x-component of the MR signal (Magnetization) recorded in the rotating frame when the receiver is ON. 
• My_per_timestep: an array that holds the evolution of the y-component of the MR signal (Magnetization) recorded in the rotating frame when the receiver is ON. 
• Mz_per_timestep: an array that holds the evolution of the z-component of the MR signal (Magnetization) recorded in the rotating frame when the receiver is ON. 
• Mfinal_x, Mfinal_y, Mfinal_z: variables that hold the components (x, y, z respectively) of the Magnetization at the end of the pulse sequence.
• info: it is a structure that holds information about the entire process of simulation. More information can be found here (MR imaging: info structure)

For example, a simulation of a pulse sequence that fills 128 kspace lines, each one with 256 samples, will result in Mx_per_timestep, My_per_timestep and Mz_per_timestep matrices of size [1 x 32768], where the number 32768 results from the operation 128 x 256.