Constructive Interference in Steady State: A MRI imaging technique that produces high-resolution images. CISS accentuates the contrast between fluids, such as cerebrospinal fluid (CSF), and surrounding structures. This enables precise visualization of intricate structures within the nervous system, including the brain, spinal cord, and inner ear. Its ability to provide heavily T2-weighted images sets it apart as a valuable tool for detailing soft tissues and distinguishing fine structures.
Glossary
WP Glossary
clivovertebral angle
Clivus-Vertebral Angle – Also termed the craniovertebral or clivi-canal angle is the angle of the intersection of line drawn along dorsal surface fo the clivus and the upper cervical ventral spinal canal. this angle is generally 150 deg or greater.
Clonus
Involuntary, rhythmic muscle contractions due to a lesion of the upper motor neurons. An extreme state of hyperreflexia.
CM-AVM
Capillary Malformation-Arteriovenous Malformation Syndrome. A rare disorder involving small blood vessels (capillaries), usually of the face and limbs. These lesions are typically 1-2 cm in diameter and multiple. There can also be high-flow AVMs in the skin, muscle, bone and brain in this condition. These AVMs can result in bleeding, heart failure and neurologic deficits.
CMAP
Compound motor (muscle) action potential. The composite electrical activity in a muscle that has been simultaneously stimulated by a group of motor neurons (nerve fibers) within a motor nerve.
CMG
Cystometrogram. A diagnostic procedure used to evaluate bladder function. It measures the pressure within the bladder as a function of the volume of fluid within the bladder.
CMV
Cytomeglovirus or human herpesvirus-5
CN
Cranial nerve(s)
CNS
The central nervous system. The brain and spinal cord. These structures receives and integrates information from the body via the peripheral nervous system and coordinates the activity of the elements of the body.
coarctation of the aorta
A narrowing of the proximal portion of the aorta resulting in elevated blood pressures in the upper parts of the body and lowering in the lower parts.
