A proposed classification for assessing rupture risk in patients with intracranial arteriovenous malformations.

Background: Whether cerebral arteriovenous malformations (AVMs) should be treated remains an ongoing debate. Nevertheless, there is a need for predictive factors that assist in labelling lesions as low or high risk for future rupture. Our aim was to design a new classification that would consider hemodynamic and anatomic factors in the rapid assessment of rupture risk in patients with AVMs.

Exciton Transfer and Emergent Excitonic States in Oppositely-Charged Conjugated Polyelectrolyte Complexes.

Photosynthetic organisms have mastered the use of "soft" macromolecular assemblies for light absorption and concentration of electronic excitation energy. Nature's design centers on an optically inactive protein-based backbone that acts as a host matrix for an array of light-harvesting pigment molecules. The pigments are organized in space such that excited states can migrate between molecules, ultimately delivering the energy to the reaction center.

[Endovascular management of skull base tumors. A practical review on literature].

Generally speaking, skull base tumors are very difficult-to-reach lesions. More or less, two thirds of those tumors correspond to meningiomas, which are highly vascular tumors. Tumors that are able to an embolization are juvenile nasopharyngeal angiofibromas, hemangiopericytomas, hemangioblastomas, meningiomas, metastatic lesions, paragangliomas, glomus tumors and other paragangliomas.

Recanalization of vertebral artery dissection.

Background And Purpose: We investigated the predictors and time course for recanalization after vertebral artery dissection.

Methods: We prospectively studied 61 consecutive patients with confirmed diagnoses of vertebral artery dissection without intracerebral hemorrhage. Neuroimaging and clinical follow-up were performed at presentation and at 3, 6, and 12 months.

Management of direct carotid-cavernous sinus fistulas with the use of ethylene-vinyl alcohol (Onyx) only: preliminary results.

Object: So-called direct carotid-cavernous fistulas (CCFs) are commonly treated by detachable balloons or coils to occlude the shunt while sparing the carotid artery. Liquid embolic agents have been rarely used, and in particular, to the authors' knowledge, the use of Onyx as the sole agent has never been reported in an indexed publication.

Methods: The authors describe a case series of 5 patients with posttraumatic CCF in whom embolization with Onyx was prospectively used as the sole strategy of management.