Subdural hematoma CT
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Subdural Hematoma Microchapters |
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Subdural hematoma CT On the Web |
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American Roentgen Ray Society Images of Subdural hematoma CT |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
CT
Most of the time, subdural hematomas occur around the tops and sides of the frontal and parietal lobes.They also occur in the posterior fossa, and near the falx cerebri and tentorium. Unlike epidural hematomas, which cannot expand past the sutures of the skull, subdural hematomas can expand along the inside of the skull, creating a convex shape that follows the curve of the brain, stopping only at the dural reflections like the tentorium and falx cerebri.
On a CT scan, subdural hematomas are crescent-shaped, with a concave surface away from the skull. Subdural blood can also be seen as a layering density along the tentorium cerebelli. This can be a chronic, stable process, since the feeding system is low-pressure. In such cases, subtle signs of bleeding such as effacement of sulci or medial displacement of the junction between gray matter and white matter may be apparent. A chronic bleed can be the same density as brain tissue (called isodense to brain), meaning that it will show up on CT scan as the same shade as brain tissue, potentially obscuring the finding.
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CT: Subdural hematoma -
CT: Subdural hematoma
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CT: Subdural hematoma -
CT: Subdural hematoma -
CT: Subdural hematoma
