• Lindsay Duy, Arwa Badeeb, Walter Duy, Eman Alqahtani, Walter Champion, Kim Dae Hee DH Diagnostic Radiology Department, Lahey Hospital and Medical Center, Burlington, MA., Dann Martin, Vartan Vartanians, Phillip Coffin, and Juan E Small.
• Diagnostic Radiology Department, Lahey Hospital and Medical Center, Burlington, MA.
• J Neuroimaging. 2019 Jul 1; 29 (4): 536-539.

Background And PurposeIsodense and hypodense acute subdural hematomas have been reported in the literature in anemic patients. The purpose of this study is to see if there is a statistically significant difference between the Hounsfield unit measurements of acute subdural hematomas in anemic and nonanemic patients.MethodsA total of 109 patients were analyzed. We measured the most hyperdense component of the subdural hematoma and compared these measurements for both anemic and nonanemic patients.ResultsAll patients with anemia had a hyperdense component to their subdural hematomas during the acute period. No statistically significant difference was found in the density of the subdural hematomas between the two groups. More heterogeneous subdural hematomas were found in the anemic group than the nonanemic group, which suggests that anemia alone is not a sufficient explanation for acute homogenous isodense and hypodense subdural hematomas.ConclusionA hyperdense subdural component was present in all acute subdural hematomas in anemic patients. Therefore, anemia alone is not a sufficient explanation for a homogenous low-density acute subdural hematoma.© 2019 by the American Society of Neuroimaging.

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