FIG 2. EPID versus LSDI in a volunteer with a paper clip taped to the forehead.

A, EPID (2000/90/1; b = 600 s/mm²) trace image shows marked signal loss due to magnetic-susceptibility effect in the anterior two thirds of the brain.

B, LSDI (2736/89/1; b = 600 s/mm²) trace image at the same level shows less artifactual signal loss with preservation of much of the anatomic detail.