What are the three core theories of IR? 

Which extrinsic setting includes the strength, duration, and timing of diffusion gradients

Methods to correct for Aliasing include:Select all that apply

What is another name for an incoherent gradient echo pulse sequence that removes residual transverse magnetization before the next excitation?

______________ is the optimal flip angle to use in a given gradient echo pulse sequence

Formulas:You are performing a sequence with the following parameters; 1600 TR, 150 TE, 26 cm FOV, 225 x 320 matrix, 3 mm slice thickness, 2 mm slice gap, 4 NEX, and 16 slices.Calculate the Pixel AreaReminder: you must convert your FOV from cm to mm. Show work in answer box.

The spin of an active hydrogen nuclei is called:

Formulas:You are performing a sequence with the following parameters; 2500 TR, 120 TE, 28 cm FOV, 256 x 280 matrix, 5 mm slice thickness, 2 mm slice gap, 4 NEX, 2 ETL, and 16 slices.Calculate Voxel VolumeReminder: you must convert your FOV from cm to mm. Show work in answer box.

During a GRE, the slice select gradient is turned on when? 

Which pulse sequence is most insensitive to magnetic field inhomogeneities ?