CHORUS
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bright T1 lesion
(short T1)
- fat (lipoma, dermoid)
- sub-acute hemorrhage (metHb)
- paramagnetic agent (Gd, ? post. pituitary)
- proteinaceous fluid (colloid cyst)
- metastatic melanoma (melanotic)
most abnormalities cause long T1 + T2 ("dark/bright")
see also: dark T2 lesion
Charles E. Kahn, Jr., MD - 2 February 1995
Last updated: 1 September 2006
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Medical College of Wisconsin