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Titanium Stainless steel
Plastic
10 mm
2 mm
4 mm
Spin echo images of needles (18G/1.3 mm) in a 1.5 T B0 field
Titanium Stainless steel
5 mm 14 mm
0 degrees with respect to Bo field 40 degrees
Distortions depend on material, shape and orientation
MRI-guided interventions: needles