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Figure 2 Schematic of endograft designs. (A) Unmodified commercial device imaged on the basis of intrinsic magnetic susceptibility (signal void). (B) Homemade endograft device with active opposed loop solenoid coils as markers delineating proximal and distal stent edges. (C) Homemade endograft device with active stent connected to delivery system shaft by a detachable cable that, after deployment and removal of the delivery catheter, renders the stent inactive. (D) Homemade endograft device with active stent as described in (C) and second active marker composed of a multilooped coil on the delivery shaft just beyond the distal stent edge.