Abstract
We read the letter by Murai et al with great interest and thank them for their detailed comments. In our article, our main intent was to describe the spot sign in magnetic resonance imaging from a methodological point of view.1 Therefore, we used T1 dynamic and T1 postcontrast imaging to show whether the spot sign can be reliably diagnosed with T1-weighted magnetic resonance imaging at 3 T. In terms of clinical impact of this potential imaging marker, we could show that spot sign was associated with worse clinical outcome. The number of patients in our study to receive an imaging follow-up was too small to evaluate hematoma expansion. This …
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