Ceramics ; Esthetics, Dental ; Humans

Cerebral vasospasm is the main reasons of cerebral infarction and delayed ischemic neurological deficit in patients with spontaneous subarachnoid hemorrhage. At present, the research of cerebral vasospasm is relatively focused on the spasmogens in bloody cerebro-spinal fluid. This article reviews the mechanisms of cerebral vasospasm induced by the major spasmogens in the bloody cerebrospinal fluid after subarachnoid hemorrhage.

The annual Live Interventional Neuroradiology & Neurosurgery Course (LINNC) is one of the most important congresses in the neurosurgery and neuroradiology field. LINNC 2009 was held on May 25th this year and lasted for 3 days. In this article, the authors introduced the main points of the congress The congress mainly discussed some hot topics at present time, including both the clinical and fundamental studies of cerebral arteriovenous malformation. Ischemic cerebral disease and intracranial aneurysm, etc. Both neurological and neuroradiological case demonstrations related to the topics, and the main course of the congress were altemately performed. Recent advances in imaging technique and clinical application, such as Dyna-CT and Xper-CT, were also presented on the congress.

Acupuncture Analgesia ; Animals ; Central Nervous System ; metabolism ; Electroacupuncture ; Nitric Oxide ; metabolism ; Pain Threshold ; physiology ; Rats ; Rats, Wistar

Finite element analysis can be used to study the change of the structure and the interior field intensity of human and animal body organs and tissues with simulation experiment. We in our research used finite element analysis software to analyze and solve the spinal cord surface potential problems, and investigated the transmission features of signals generated by interneurons in spinal nerves which were related with body motion control and sensory processing. A three dimensional model of electrical source in rat spinal cord was built, and the influence on potential distribution on spinal cord surface caused by position changes of electrical source in transverse direction and dorsoventral direction were analyzed and calculated. We obtained the potential distribution curves of spinal cord surface and found that the potential distribution on spinal cord surface showed monotone. In addition, potentials of some registration points were smaller than that of registration points around.
Action Potentials ; Animals ; Computer Simulation ; Finite Element Analysis ; Humans ; Interneurons ; physiology ; Models, Anatomic ; Rats ; Spinal Cord ; physiology

Atherosclerosis ; prevention & control ; Humans ; Vaccination

The annual Live Interventional Neuroradiology & Neurosurgery Course(LINNC) is one of the most important congresses in the neurosurgery and neuroradiology field.LINNC 2009 was held on May 25th this year and lasted for 3 days.In this article, the authors introduced the main points of the congress.The congress mainly discussed some hot topics at present time, including both the clinical and fundamental studies of cerebral arteriovenous malformation, ischemic cerebral disease and intracranial aneurysm, etc.Both neurological and neuroradiological case demonstrations related to the topics, and the main course of the congress were alternately performed.Recent advances in imaging technique and clinical application, such as Dyna-CT and Xper-CT, were also presented on the congress.

Objective Endovascular stenting or combined stenting and Guglielmi detachable coils packing for the treatment of intracranial fusiform and wide necked aneurysms were reported to access the feasibility of the procedures.Methods The coronary stents were implanted across the neck of 3 vertebral fusiform aneurysms and 6 wide necked aneurysms. Microcatheters were introduced into the aneurysm sacs through stent mesh, and finally GDCs were used to embolize the aneurysms. Results The stents were precisely deployed resulting in total occlusion of 7 cases with more than 90% occlusion in 2 cases. All patients recovered well with patency of the parent arteries.Conclusions Endovascular therapy with combined stent implantation and microcoil placement maybe a valid alteration for the treatment of intracranial fusiform or wide necked aneurysms.

Objective To analyze the causes, prevention and treatment of repture druing procedure for intracranial aneurysm embolization with GDC.Methods All the seven patients were embolized. Six patients were ruptured during the procedure and continuously embolized until the bleeding was halted. Another one was identified by post procedure CT. Results Four patients recovered unevent fully with one only suffering from mild deficit. Another 2 patients died of hyper intracranial pressure within one week. Conclusions Rupture during procedure of intracranial aneurysm embolization with GDC may be related to manipulation, properties of the parent artery and arneurysm. Continuous embolization with GDC will provide favorable prognosis for the patients.

Objective To evaluate the endovascular embolization treatment of large and giant ophthalmic aneurysms. Methods Three aneurysms were embolized with coils only and 5 aneurysms were treated with stent placement togather with subsequent coiling. Results In the 3 aneurysms treated only with GDC, total embolization was achieved in 1 and partial embolization in 2. In the stent placement and coiling case, 4 aneurysms were densely packed and another one was partially packed. Conclusions Combined stenting and coiling is effective and safe for the treatment of large and giant ophthalmic artery aneurysm with the preservation of parent artery.