"The thickened arachnoid band can be visualised using 3D SPACE SITR or CISS sequences at the level of the spinal cord displacement 4."
"The thickened arachnoid band can be visualised using 3D SPACE SITR or CISS sequences at the level of the spinal cord displacement 4."
"This condition is due to the presence of a thickened band of arachnoid over the dorsal aspect of the cord; ventral arachnoid webs are extremely rare 3. This results in a focal displacement of the cord anteriorly and is often associated with syringomyelia, believed to be due to altered CSF flow dynamics due to the aforementioned web 1."
"Direct visualisation of the web is difficult on routine imaging; the key feature which implies the diagnosis is a focal dorsal indentation and anterior displacement of the thoracic cord, best identified on MRI (with CT myelogram as an alternative)."
"Other causes of intramedullary cysts/abnormal signal should also be considered, and contrast is necessary to exclude an intramedullary mass (e.g. ependymoma)."