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Observational Study
©The Author(s) 2025.
World J Radiol. Sep 28, 2025; 17(9): 112983
Published online Sep 28, 2025. doi: 10.4329/wjr.v17.i9.112983
Table 5 Summary of the hematoma expansion Prediction Grading System
Component
Points
Baseline hematoma volume (mL)
    ≥ 301
    < 300
IVH
    Present1
    Absent0
Island sign
    Present1
    Absent0
Black hole sign
    Present1
    Absent0
Swirl sign        
    Present1
    Absent0


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