MRI susceptibility artefacts related to scaphoid screws: the effect of screw type, screw orientation and imaging
M Ganapathi1, G Joseph, R Savage
1Royal Gwent Hospital, Newport, Gwent, UK. muthuganapathi@hotmail.com
Journal of Hand Surgery (Edinburgh, Scotland)
|May 25, 2002
Abstract:
Metal implants produce susceptibility artefacts in magnetic resonance imaging. We have explored the effects of scaphoid screw characteristics and orientation on MR susceptibility artefact. Titanium alloy, smallness and longitudinal alignment with the z-axis of the main magnetic field reduce the size of the susceptibility artefact.
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