Letter D
DIAPHYSIS
Middle part of a long bone.
DIASTASIS
Separation of something.
DIFFUSE AXONAL INURY
A large, global or “diffuse” injury of the axonal system of the brain. Usually occurs as a result of whiplash injury in a motor vehicle accident.
DIFFUSE CALCIFICATIONS
These are calcification that are scattered everywhere in the breast.
DIFFUSION
An MRI technique that helps to characterize tissue in the body this is abnormal. Often an area of ischemia or stroke will appear as a bright spot on diffusion MRI.
DIFFUSION RESTRICTION
Is also called “restricted diffusion” and refers to a stroke on MRI.
DILITATION
Dilated or “enlarged”.
DISC
The piece of tissue between the spinal bones, or vertebrae. It provides the “cushion” between bones and is affected by arthritis.
DISC BULGE
A wide, long outpouching of the disc. Think of your santa claus’ belly sqeezing into a tight belt!
DISC EXTRUSION
A disc that is longer than it is wide. Think of toothpaste squeezing out of the tube.
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