Normal contrast enhancement of extraocular muscles: fat-suppressed MR findings.
OBJECTIVE
To evaluate contrast enhancement of normal extraocular muscles in the orbit.


METHODS
Noncontrast and contrast-enhanced T1-weighted images of the orbit were acquired using a fat-suppression MR technique in eight patients with no orbital disease. Contrast enhancement of 64 extraocular muscles was evaluated and compared with that of 16 temporal muscles.


RESULTS
Compared with temporal muscles, all extraocular muscles markedly enhanced after administration of contrast material.


CONCLUSIONS
Because normal extraocular muscles enhanced markedly with contrast material, more attention should be paid to these muscles when using contrast-enhanced, fat-suppressed T1-weighted MR imaging to evaluate pathologic conditions.
Amano
Y
Y
Department of Radiology, Nippon Medical School, Tokyo, Japan.
Amano
M
M
Kumazaki
T
T
D000273:Adipose Tissue / Q000473:pathology; D000328:Adult; D000368:Aged; D001932:Brain Neoplasms / Q000175:diagnosis / Q000601:surgery; D002544:Cerebral Infarction / Q000175:diagnosis; D003287:Contrast Media; D004338:Drug Combinations; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008536:Meglumine; D008875:Middle Aged; D009801:Oculomotor Muscles / Q000473:pathology*; D009915:Orbit / Q000473:pathology; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives*; D011183:Postoperative Complications / Q000175:diagnosis; D012016:Reference Values
D003287:Contrast Media; D004338:Drug Combinations; D009942:Organometallic Compounds; D008536:Meglumine; D004369:Pentetic Acid; D019786:Gadolinium DTPA