Reduction of metal artefacts in musculoskeletal MR imaging

The purpose of this article is to present a educational overview of practical tips to deal with metal artefacts in clinical musculoskeletal MRI. A brief theoretical explanation to understand the cause of metal artefacts is provided followed by a discussion on parameters to reduce these metal artefac...

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Bibliographic Details
Published inJBR-BTR : organe de la Societe royale belge de radiologie (SRBR) = orgaan van de Koninklijke Belgische Vereniging voor Radiologie (KBVR) Vol. 90; no. 5; p. 345
Main Authors Vandevenne, J E, Vanhoenacker, F M, Parizel, P M, Butts Pauly, K, Lang, R K
Format Journal Article
LanguageEnglish
Published Belgium 01.09.2007
Subjects
Humans
Image Enhancement - methods
Magnetic Resonance Imaging - methods
Metals
Musculoskeletal System
Orthopedic Fixation Devices
Phantoms, Imaging
Prostheses and Implants
Titanium
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Summary:The purpose of this article is to present a educational overview of practical tips to deal with metal artefacts in clinical musculoskeletal MRI. A brief theoretical explanation to understand the cause of metal artefacts is provided followed by a discussion on parameters to reduce these metal artefacts. Effects of adjustable parameters are demonstrated both in a volunteer with a titanium screw and a saline bag attached to the shoulder and in a in vitro experiment. These parameters include positioning of the patient with the long axis of metallic hardware parallel to B0, use of fast spin echo sequences, use of inversion recovery fat suppression, swapping phase and frequency encoding direction, use of view angle tilting, increasing the read-out bandwidth, and decreasing voxel size.
ISSN:0302-7430