Failure of Flow-Diverter Endothelization Visualized with Optic Coherent Tomography Technology.

We report a case of an intracranial aneurysm of the left posterior inferior cerebellar artery, which was treated with a flow-diverting stent. One year later at follow-up, the patient presented with new symptoms due to mass effect in the posterior fossa and a 3-fold enlargement of the aneurysm. Digital subtraction angiography showed an increase in size of the aneurysm with jet flow into the sac.

Quantum interference effects in multi-channel correlated tunneling structures.

In multi-channel tunneling systems quantum interference effects modify tunneling conductance spectra due to Fano effect. We investigated the impact of Hubbard type Coulomb interaction on tunneling conductance spectra for the system formed by several interacting impurity atoms or quantum dots localised between the contact leads. It was shown that the Fano shape of tunneling conductance spectra strongly changes in the presence of on-site Coulomb interaction between localised electrons in the intermediate system.