A DAI is caused by shaking or strong rotation of the head by physical forces, such as with a car crash. Injury occurs because the unmoving brain lags behind the movement of the skull, causing nerve structures to tear. The tearing of the nerve tissue disrupts the brain’s regular communication and chemical processes.
What does DAI look like on an MRI?
The most common MRI finding of DAI, as seen in the image below, is the presence of multifocal areas of abnormal signal (bright on T2-weighted images) at the white matter in the temporal or parietal corticomedullary junction or in the splenium of the corpus callosum.
What is a Grade 1 Dai?
Grade 1: A mild diffuse axonal injury with microscopic white matter changes in the cerebral cortex, corpus callosum, and brainstem. Grade 2: A moderate diffuse axonal injury with gross focal lesions in the corpus callosum.
How is DAI diagnosed?
Generally, DAI is diagnosed after a traumatic brain injury with GCS less than 8 for more than six consecutive hours. Radiographically, computed tomography (CT) head findings of small punctate hemorrhages to white matter tracts can indicate diffuse axonal injury in the setting of an appropriate clinical presentation.
Can you see diffuse axonal injury on MRI?
What does the medical term dai mean?
The meaning of Dai is “great”. It is also of Vietnamese and Welsh origin, where its meaning is “beloved”. Dai is used as both a boys and girls name. It consists of 3 letters and 1 syllable and is pronounced Dai.
What does Dai stand for in injury in medical category?
DAI stands for Diffuse Axonal Injury (brain contusion, neurology)
What is diffuse axonal injury?
A diffuse axonal injury (DAI) is a type of brain injury which involves damages to the axons, caused by shearing forces which push tissues in the brain past each other. As the “diffuse” in the name implies, a diffuse axonal injury can cover a large area of the brain, as opposed to a focal injury,…
