Artifacts

 

Motion 

MPRAGE (Motion) -- Note striations with the "Bright" windowing:

“Automatic” Windowing	“Bright” Windowing

 

FLAIR (Motion) -- Note fuzziness on the image:

DTI (Motion) -- Note signal dropout for cetrain slices:

Metal – Braces

Localizer (Braces) -- Note signal dropout around the mouth:

 

EPI (Braces) -- Note signal dropout and skewing:

Metal – Crown 

Localizer (Crown) -- Note signal dropout around the mouth:

 

MPRAGE (Crown) -- Note signal dropout around the mouth:

EPI (Crown) -- Note signal dropout around the sinuses for inferror slices:

DTI (Crown) -- Note skewing for inferior slices:

Metal – Bobby Pins

Localizer (Bobby Pins) -- Note signal voids:

 

Metal – Keys stuck to the inside of the scanner bore

MPRAGE (Keys) -- Note signal hyperintensity:

w/ Keys	w/out Keys

 

FLAIR (Keys) -- Note signal hyperintensity:

w/ Keys	w/out Keys

 

Metal – Migrating bra strap during and EPI sequence

EPI (Bra Strap) -- Note signal smearing for inferior slices:

Strap in place	Strap moving	Strap close to the head

 

Ghosting – N/4 Ghost

EPI (N/4 Ghost) -- Note brain shaped shadowing in the middle slices: