Artifacts may create a problem if the area of interest is in the same area or close to the stent (e.g., for a T1-weighted, spin echo pulse sequence, within approximately 16 mm for a gradient echo pulse sequence, within approximately 23 mm). Heating was not substantial (+0.5 degrees C). The stent exhibited minor magnetic field interactions that will not cause migration. Artifacts were characterized using T1-weighted, spin echo, and gradient echo pulse sequences. MRI-related heating was assessed with the stent in a gelled saline-filled phantom using a transmit/received RF body coil with a whole body averaged SAR of 2.0 W/kg. To evaluate MR safety at 3 Tesla for a drug eluting coronary stent.Ī drug eluting coronary stent (Endeavor, cobalt alloy, Medtronic Vascular, Santa Rosa, CA) was evaluated for magnetic field interactions, heating, and artifacts at 3 Tesla.
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