Erschienen in:
01.06.2015 | Correspondence
Extreme Anemia Causing Unusual “Black-out” of the Cerebral Vessels on Noncontrast Brain CT
verfasst von:
B. Coulier, MD, S. Van den Broeck, MD, F. C. Deprez, MD
Erschienen in:
Clinical Neuroradiology
|
Ausgabe 2/2015
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Excerpt
Noncontrast brain computed tomography (CT) remains often recommended in the emergency setting, particularly to exclude a fresh hematoma or a hemorrhage. Radiologists are also trained to specifically recognize hyperattenuating vascular signs in case of acute clot or thrombosis [
1]. Hypodensity of blood is more unusual and more subtle to detect except when it is very marked. We report a case of massive diffuse hypodensity of all cerebral vessels diagnosed during noncontrast brain CT in an extremely anemic patient. The linear relationship between hemoglobin levels and CT attenuation of blood is briefly discussed. …