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Table 4 Imaging features of focal signal abnormality marrow lesions (number of cases = 38/42, ~ 90.5%)

From: The added value of chemical shift imaging in evaluation of bone marrow changes in sickle cell disease

  Imaging feature No. of lesions Percent
Osteonecrosis (34/38 cases ~ 89.5%) (n. of lesions = 153) Patchy STIR high signals (acute lesion) * 105 ~ 63.6%
Serpiginous STIR hyperintensity and central low signals of fat (chronic lesion) * 48 ~ 31.4%
T1 hyperintensity on T1fs 83 ~ 54.2%
Marginal enhancement ** 61 N/A
Osteomyelitis (4/38 cases ~ 10.5%) (n. of lesions = 4) Presence of extra-osseous signal abnormality 4 100%
Presence of sequestra 2 50%
Cortical defect 3 75%
Patchy enhancement 4 100%
  1. *STIR high signals refer to edema-like signals on STIR or other fluid-sensitive fat suppressed images
  2. **Not all patients underwent post-contrast study