Magic angle effect - MRI artefact

Case contributed by Dr Roberto Schubert

Presentation

MRI performed for intractable wrist pain.

Modality: MRI
Modality: MRI

Case Discussion

The magic angle effect causes increased signal in short TE images (less than 32 ms; T1W sequencesPD sequences and gradient echo sequences) of collagen-rich tendons, ligaments or fibrocartilage oriented at about 55° to the main magnetic field (B0). 

The above images demonstrate this effect in the flexor pollicis longus (FPL) tendon.

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Case Information

rID: 14219
Case created: 7th Jul 2011
Last edited: 13th Oct 2015
Inclusion in quiz mode: Included

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