Structural and Functional Disturbances of the Thoracic Aorta in Atherosclerosis of Various Gradations.

Aim      To study global aortic circumferential strain in normal conditions and in atherosclerosis of various grades and to determine its role in prediction of structural and functional disorders of the thoracic aorta (TA) and coronary atherosclerosis using 2D speckle-tracking transesophageal echocardiography.Material and methods  182 patients with typical or probable angina were examined. The control group consisted of 11 healthy volunteers.

[Possibilities and limitations of three-dimensional transesophageal echocardiography in the diagnosis of thoracic aorta atherosclerosis].

To compare the possibilities and limitations of the two-dimensional (2D) and three-dimensional (3D) multiplane transesophageal echocardiography (TEE) for the diagnosis of the thoracic aorta (TA) atherosclerosis stage, qualitative and quantitative assessment of aortic atheromas and coronary atherosclerosis prediction. Materials and methods. 2D and 3D multiplane TEE of the TA was performed in 180 consecutive CAD patients (104 men, 76 women, mean age 62,4±7,5 years) using Philips IE33 xMatrix system and a X7-2t multiplane probe.

Statistical estimation of the efficiency of quantum state tomography protocols.

A novel operational method for estimating the efficiency of quantum state tomography protocols is suggested. It is based on a priori estimation of the quality of an arbitrary protocol by means of universal asymptotic fidelity distribution and condition number, which takes minimal value for better protocol. We prove the adequacy of the method both with numerical modeling and through the experimental realization of several practically important protocols of quantum state tomography.

Qutrit state engineering with biphotons.

The novel experimental realization of three-level optical quantum systems is presented. We use the polarization state of biphotons to generate a specific sequence of states that are used in the extended version of four-state QKD protocol quantum key distribution protocol. We experimentally verify the orthogonality of the basic states and demonstrate the ability to easily switch between them.