<FONT face=Verdana>PROPELLER (Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction) MRI offers an effective means for compensating rigid motion during data collection. So far

this method has been evaluated clinically and found to be able to improve image quality through quantification and correction for head motion

where hypothetically only rotation and translation is present. During imaging of other parts of body

especially in abdomen

soft tissue such as liver

deformation occurs frequently. Traditional PROPELLER reconstruction can’t model this kind of non-rigid body motion and can only attain limited compensation through correlation weighting. In this paper

a new method was proposed for affine motion correction

which extracted affine motion information from image space and compensated it in k-space. The experimental results show that the proposed method could correct artifacts due to not only the rigid motion but also the affine motion.