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Effect of contrast extravasation on hematoma expansion. This figure presents the predictive values across studies for contrast extravasation to predict hematoma expansion. The predictive values indicated the independent effect of contrast extravasation and not the effect of contrast extravasation in addition to spot sign – please see text. N CE, number of patients with contrast extravasation; N all, total number of patients in the population; exp def, definition of hematoma expansion.
