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Abbreviated Reports Gd-DTPA-Enhanced MR Images : Accentuation of Vascular Pulsation Artifacts and Correction by Using Gradient-Moment Nulling

A long-recognized advantage of MR over CT is the absence on MR images of bone-related artifacts within the posterior fossa. With the recent introduction of Gd-DTPA, however, a troublesome increase in the number of flow-related artifacts superimposed on MR images of the cerebellum and brainstem has been noted. This report quantifies these iatrogenically created artifacts and describes the effectiveness of a gradient-moment nulling technique for reducing them.