title: MRI susceptibility artefacts related to scaphoid screws: the effect of screw type, screw orientation and imaging parameters.
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.
authors.affiliation: Royal Gwent Hospital, Newport, Gwent, UK. muthuganapathi@hotmail.com
authors.forename: M
authors.initials: M
authors.lastname: Ganapathi
authors.forename: G
authors.initials: G
authors.lastname: Joseph
authors.forename: R
authors.initials: R
authors.lastname: Savage
authors.forename: A R
authors.initials: AR
authors.lastname: Jones
authors.forename: B
authors.initials: B
authors.lastname: Timms
authors.forename: K
authors.initials: K
authors.lastname: Lyons
mesh_terms: D016477:Artifacts; D001863:Bone Screws; D005593:Fracture Fixation, Internal; D005599:Fractures, Ununited / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D019047:Phantoms, Imaging; D021361:Scaphoid Bone / Q000293:injuries*; D014025:Titanium
chemical_list: D014025:Titanium