Endovascular Treatments for Brain Aack Introduction - Microsurgery: Advances, Simulations, and Applications - page 55

a)

b)

c)

Figure 2.9 Stent for cerebral aneurysm. (a) Self-expandable-type stent
(by Johnson and Johnson Co.) afixed to the neck of a wide-
neck-type aneurysm. (b) Stent deployment for aneurysm coil
embolization in a wide-neck-type aneurysm model (by Johnson
and Johnson Co.) (c) The blood low inside the aneurysm is
restrained using a tight mesh stent placed in the blood vessel
near the aneurysm location, promoting the coagulation of blood
inside the aneurysm. This treatment is applied where aneurysm
size makes dificult the use of conventional treatments (http://
www.balt.fr/).

2.2 Carotid Artery Stenosis

The region located after carotid artery bifurcation has the tendency
to develop atherosclerosis. About the half of strokes and transient
ischemic attack (TIA) caused by transient insuficiency of cerebral
blood low are caused by stenosis as a consequence of atheroma
growth in carotid artery. A total obstruction of the blood vessel by
the stenosis is reported in 10% of the cases [24-26]. Noninvasive
examination such as MRA, 3D-CTA and carotid artery ecograph
enabled easy and comparative diagnosis. Consequently it is necessary
to establish routine examination of carotid arteries in the neck of
patients suffering from strokes and spasms caused by transient
insuficiency of cerebral blood low.