Glossary

Tissue plasminogen activator – an enzyme that catalyzes the breakdown of blood clots by driving the conversion of plasminogen to plasmin.

A process which inhibits or prevents transcription of DNA. Transcriptional repressor proteins can achieve this by either counteracting positively acting transcriptional factors or inhibiting the basic transcriptional machinery.

– also know as trepination. Derived from the Greek trypanon – a borer. This refers to making a hole, by drilling or scrapping, through the skull or other body surface. It is typically done as part of a therapeutic technique where the dura is exposed to allow for a intracranial treatment such as relieving pressure or draining fluid.

– also know as trepanation, the preferred use. This refers to making a hole, by drilling or scrapping, through the skull or other body surface. It is typically done as part of a therapeutic technique where the dura is exposed to allow for a intracranial treatment such as relieving pressure or draining fluid.

The Superior Anastomotic Vein.  It anastomoses with the Middle Cerebral Vein and the Sagittal Sinus.

Tuberous sclerosis or tuberous sclerosis complex.

Tuberous sclerosis complex – a rare multi-system disease associated with benign tumors in the brain, kidneys, heart, eyes, lungs and skin. Problems that can be seen in this condition include seizures, developmental delay, poorly controlled behavior, skin abnormalities , lung and kidney disease. The disease is heritable.

Transthoracic echocardiogram

Time To Peak (concentration of gadolinium absorption in a tissue volume).  A measurement used to determine a tissue’s perfusion by blood.

Tumor in the third ventricle