Table 2

The WEB-IT angiographic scale

WEB-IT scaleDefinition1-Year angiographic outcome descriptions1-Year angiographic schematics1-Year angiographic WEB-IT examples
Complete occlusionNo contrast in contact with intracranial aneurysm neck or with wall of intracranial aneurysm sacWEB-IT effectiveness endpoint Embedded Image Embedded Image
Residual neckSome contrast in contact with intracranial aneurysm neck but no contrast in contact with wall of intracranial aneurysm sac or inside the WEB deviceAdequately occluded patients when combined with completely occluded patients Embedded Image Embedded Image
Residual aneurysmApparent contrast in contact with intracranial aneurysm sac or inside the WEB devicePatients who may require re-treatment Embedded Image Embedded Image
The WEB-IT angiographic scale is described with definitions. This scale was used by the core laboratory for evaluation of angiographic follow-up at 1 year. Illustrations depict three separate basilar apex wide-neck bifurcation aneurysms and 1-year follow-up imaging from the trial.