Clinical applications of advanced magnetic resonance imaging techniques for arthritis evaluation

Figure 8 Acute sacroiliitis in a 32-year-old woman with left hip pain. A-C: Coronal STIR shows a focus of subchondral bone edema in the left hemisacrum (arrow, A), which appears hyperintense on (B) high b value DWI, with (C) significantly higher ADC values than contralateral bone marrow (1.3 × 10^-3 mm²/s vs 0.2 × 10^-3 mm²/s); D: Fused DWI and STIR images allow a better depiction of bone edema. STIR: Short inversion time recovery; DWI: Diffusion-weighted imaging; ADC: Apparent diffusion coefficient.