Howtosignalprocessing
Why does aliasing occur in MRI?
Aliasing artifacts occur in the phase encoding direction when the dimensions of the imaged object exceeds the field of view. Signal generated from outside the field of view appears as a superimposed object at the opposite edge of the image.
What is aliasing in MRI?
Aliasing or wrap-around corresponds to overlapping on the opposite side of the image of signals outside of the FOV. It is caused by a corruption in the spatial encoding of objects outside the FOV which cannot be distinguished from objects inside the FOV.
What is chemical shift MRI?
Chemical shift imaging (CSI) is an important fat-suppression technique in magnetic resonance imaging (MRI); it is used routinely in abdominal imaging to detect the presence of intralesional fat. Its utility in musculoskeletal imaging has recently gained interest as a technique that is complementary to routine imaging.
