STIR — T2-Heavy Readout · 1.5T

TR = 4500 ms · TI = 170 ms · TE = 80 ms · 4 cycles — longer TE increases T2 weighting; muscle signal further suppressed

Fat (T1=260ms) — nulled

White matter

Grey matter

Muscle (T2=50ms — rapid decay at TE=80ms)

CSF (T2=1800ms — dominant signal at TE=80ms)