The irregular sign, black hole sign, blend sign and early use of dehydration may be the main risk factors for hematoma expansion group, whereas early use of dehydration, high systolic blood pressure, and low-density band may be the main risk factors for hematoma expansion 1).
Compared with previously reported predictors for hematoma expansion on non-enhanced CT, such as blend sign, black hole sign and heterogeneous density, CTA spot sign has better predictive accuracy for hematoma expansion 2) 3) 4).
1)
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2)
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3)
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4)
Yu Z, Zheng J, Ma L, Guo R, Li M, Wang X, Lin S, Li H, You C. The predictive
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10.1007/s10072-017-3006-6. [Epub ahead of print] PubMed PMID: 28577268.