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Category Archives: Brain Imaging

The following section will be dedicated to brain imaging relevant to rehabilitation. Emphasis is placed on the imaging of ischemic and hemorrhagic strokes, head trauma, and common degenerative diseases. The imaging of brain neoplasms and infections will not be covered in this section, as it is beyond the scope of this text.

Diffuse Brain Injuries

Diffuse brain injuries include diffuse axonal injury, diffuse cerebral swelling, and edema. Diffuse axonal injury is produced by high shearing stresses that occur at different parts of the brain, including at the gray matter-white matter interface. These shearing stresses cause axonal stretching commonly involving the corpus callosum, anterior commissure, and upper brain stem. Blood vessels […]

Subdural Hematoma

Subdural hematoma is most commonly caused by acceleration- deceleration shearing stresses that rupture the bridging veins that extend from the movable brain to the fixed dural venous sinuses. The blood accumulates in a pre-existing but essentially volumeless subdural space. Normally, the pressure of the CSF holds the arachnoid in contact with the dura, thereby creating […]

Subarachnoid and Intraventricular Hemorrhage

Subarachnoid and intraventricular hemorrhage can be spontaneous, as in the case of a bleeding aneurysm or arteriovenous malformation, or secondary to trauma. CT is the imaging modality of choice for evaluating these types of hemorrhages because it detects the hemorrhage from its onset as a hyperdensity. However, subarachnoid hemorrhage is not as radiodense as epidural […]

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